is orange juice a element or a mixture
Answers
Orange juice is mixture.
Answer:
\(\boxed {\boxed {\sf Mixture}}\)
Explanation:
An element is pure and all the atoms have the same atomic number. An element has a symbol and can be found on Periodic Table of Elements.
A mixture is created when two or more substances are combined physically.
Orange juice can't be found on the Periodic Table of Elements. Orange juice is made up of many different substances/ingredients, like water, sugar, and juice from the orange.
Therefore, orange juice is considered to be a mixture. More specifically, a homogenous mixture because it is uniform. (*applies to pulp-free orange juice). If it has pulp, it would be a heterogenous mixture.
Related Questions
A student was given a sample of food and asked to determine the types of nutrients present in the sample. The student placed half of the sample in a test tube with Benedict’s solution and heated it. The solution turned brick red. When an iodine solution was added to the remaining half of the sample, it turned blue black. The student can correctly conclude that the food sample contained
Answers
The food sample contained starch and reducing sugar (carbohydrates).
The Benedict's test is used to test for the presence of reducing sugars, such as glucose, in a sample. When the Benedict's solution is added to a sample containing reducing sugars and heated, the solution will turn brick red.
The iodine test is used to test for the presence of starch in a sample. When iodine solution is added to a sample containing starch, it will turn blue-black.
So, in this case, the student can conclude that the food sample contained both starch and reducing sugars, as both tests produced positive results.
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Calculate the frequency of a photon with an energy of 4. 26 x10-19 J and a wavelength of 4. 67 x 10-7m.
[E= 6. 626 x 1034 x frequency C(3. 0 x 108 m/s) = wavelength x frequency]
Answers
The frequency of a photon with an energy of 4. 26 x10-19 J and a wavelength of 4. 67 x 10-7m. [E= 6. 626 x 1034 x frequency C(3. 0 x 108 m/s) = wavelength x frequency] is 28.22 × 10¹⁵hz.
So formula is :-
Energy of photon, E=hc/λ or λ=hc/E
E = hν = hc/λ,
Where, h=6.626×10−³⁴Js,c=3×10⁸
By putting all these values, we get:-
4.26× 10-¹⁹ = 6.626×10-³⁴ × ν
v = 4.26 × 6.626 × 10¹⁵
= 28.22 × 10¹⁵ hz
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if you wish to observe features that are around the size of atoms, say 7.5 × 10-10 m, with electromagnetic radiation, the radiation must have a wavelength of about the size of the atom itself.
Answers
The statement you provided is incorrect. In order to observe features that are around the size of atoms (7.5 × 10^-10 m), the radiation used should have a wavelength smaller than the size of the atom itself.
To observe objects of such small sizes, we need to use techniques like electron microscopy, where a beam of electrons is used instead of electromagnetic radiation. Electrons have much smaller wavelengths than electromagnetic radiation and can interact with atoms to provide detailed information about their structure.
Electron microscopy allows scientists to see atomic-scale features with high resolution. By using electrons instead of electromagnetic radiation, we can overcome the diffraction limit imposed by the wavelength of light, which is much larger than the size of atoms.In conclusion, to observe features around the size of atoms, we need to use electron microscopy rather than electromagnetic radiation.
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Write the name of Co4(SiO4)3
Answers
Answer:
Copper siliconquadoxide
Explanation:
A saturated solution of potassium chlorate is dissolved in 100g of water. If the saturated solution is cooled from 90 degrees Celsius to 60 degrees Celsius, how many grams would crystallize out?
Answers
Mass would crystallize out : 24 g
Further explanationSolubility is the maximum amount of a substance that can dissolve in some solvents. Factors that affect solubility
1. Temperature: 2. Surface area: 3. Solvent type: 4. Stirring process:We can use solubility graph to solve this.
solubility KClO₃ at 90°C=52 g
solubilty KCl₃ at 60°C= 28 g
Mass would crystallize out = 52 - 28 =24 g
PLEASE HELP ME QUICK RIGHT ANSWERS ONLY WILL MARK BRAINLIEST 30 POINTS
There are 3.0 * 1023 formula units KI in a sample. How many grams of KI is this? The molar mass of KI is about 166 g/mol. ? g Kl Note : Avogadro's number is ..
Answers
**MARK BRAINLIEST**
Avogadro's number is approximately 6.022 × 10^23 formula units per mole.
Given that there are 3.0 × 10^23 formula units of KI, we can calculate the number of moles of KI by dividing the number of formula units by Avogadro's number:
Number of moles = (3.0 × 10^23 formula units) / (6.022 × 10^23 formula units/mol)
Number of moles ≈ 0.498 mol
To find the mass of KI, we can use the molar mass of KI:
Mass of KI = Number of moles × Molar mass
Mass of KI = 0.498 mol × 166 g/mol
Mass of KI ≈ 82.668 g
Therefore, there are approximately 82.668 grams of KI in the sample.
What is the density of a liquid if it has a mass of 12.9g ?
Answers
Which alcohol could be prepared by the greatest number of different combinations of Grignard reagents and carbonyl compounds (aldehydes, ketones, and/or esters)
Answers
The alcohol that could be prepared by the greatest number of different combinations of Grignard reagents and carbonyl compounds is the primary alcohol. This is because primary alcohols can be prepared by the reaction of Grignard reagents with aldehydes, ketones, and esters. Secondary alcohols can also be prepared by the reaction of Grignard reagents with ketones, but they cannot be prepared from aldehydes or esters. Tertiary alcohols, on the other hand, cannot be prepared by the reaction of Grignard reagents with carbonyl compounds at all. Therefore, the primary alcohol has the greatest number of possible combinations of Grignard reagents and carbonyl compounds for its synthesis.
The alcohol that can be prepared by the greatest number of different combinations of Grignard reagents and carbonyl compounds is a secondary alcohol. This is because secondary alcohols can be synthesized from both aldehydes and ketones through the reaction with Grignard reagents, providing a wide range of possibilities for varying the reactants.Grignard reagent is an organometallic compound that is commonly used in organic chemistry as a nucleophile. It is named after its discoverer, French chemist Victor Grignard.
Grignard reagents are formed by the reaction of an alkyl halide or an aryl halide with magnesium metal in the presence of anhydrous ether. The resulting compound is a highly reactive species that can react with a wide range of electrophiles, such as carbonyl compounds, to form a new carbon-carbon bond.
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Find the grams in 5.26 x 10^-4 mol of HC2H3O2.
Answers
The question requires us to calculate the mass, in grams, contained in 5.26 x 10^-4 mol of HC2H3O2.
To solve this question, first we need to calculate the molar mass of the compound, considering the number of atoms of each element, and then relate the value obtained with the number of moles given (5.26 x 10^-4 mol).
First, to calculate the molar mass of the compound, let's consider the following atomic masses:
atomic mass of C = 12.01 u
atomic mass of H = 1.007 u
atomic mass of O = 15.99 u
Next, we calculate the molar mass. To do that, we need to consider the number of atoms of each element: according to the chemical formula, there are 2 atoms of C, 4 atoms of H and 2 atoms of O:
molar mass (C2H4O2) = (2 * 12.01) + (4 * 1.007) + (2 * 15.99) = 60.03 g/mol
Now, we know that there are 60.03 g for each mol of the compound. With that information, we can estabilish the following relation to calculate the mass contained in 5.26 x 10^-4 mol of the compound:
1 mol --------------------- 60.03 g
5.26 x 10^-4 mol ----- x
Solving for x, we have:
\(x=\frac{(5.26\times10^{-4}\text{ mol)}\times(60.03\text{ g)}}{(1\text{ mol)}}=0.03158\text{ g}\)Therefore, there are 0.03158 g of HC2H3O2 in 5.26 x 10^-4 mol of this compound.
what does combustion mean
Answers
Answer:
combustion is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.
Monday
m
Use the green plane to answer questions 1-3
E
B
F
ח
С
1) What are 2 ways you can name the plane?
a) be
b) BE
2) How dle can you name line FE? (Bonus: Can you think of another way?)
EF
3) Name 3 points on the plane.
Answers
2)they are alike just different placement
3)it don’t continue because it makes a cube
A study was conducted of 90 adult male patients following a new treatment for congestive heart failure. One of the variables measured on the patients was the increase in exercise capacity (in minutes) over a 4-week treatment period. The previous treatment regime had produced an average increase of μ=2 minutes. The researchers wanted to evaluate whether the new treatment had increased the value of μ in comparison to the previous treatment. The data yielded y(bar)=2.17 and s=1.05.
(a) if the actual value of mu is 2.1 and alpha is reduced from 0.05 to 0.01, what would be the effect on the power curve?
(b) If the sample size is reduced from 90 to 50, what would be the effect on the power curve?
Answers
a. Decreasing alpha from 0.05 to 0.01 makes the significance level more stringent. You will be less likely to reject the null hypothesis, even when it's false. This increases the probability of a Type II error, thus potentially reducing the power of the test. The power curve will shift to the left.
b. If the sample size is reduced from 90 to 50, the effect on the power curve is that it will also shift towards the left.
What more should you know about decreasing the alpha and the power curve?The power curve is a graph that shows the probability of rejecting the null hypothesis as a function of the true value of the mean.
In the given scenarios of this study, Reducing the significance level and reducing the sample size will shift the power curve to the left, indicating a decrease in the statistical power of the test.
The power of a statistical test is the probability that it correctly rejects the null hypothesis when the alternative hypothesis is true.
a) Reducing alpha from 0.05 to 0.01 means that we are more stringent in our assessment of whether the new treatment is effective.
This will result in a decrease in the power of the test, meaning that it is less likely that we will be able to detect a difference between the new treatment and the previous treatment.
b) If the sample size is reduced from 90 to 50, the effect on the power curve is that it will also shift towards the left.
This is because a smaller sample size decreases the power of the test. A larger sample size provides more information and thus makes it more likely to correctly reject the null hypothesis when the alternative hypothesis is true.
Therefore, by reducing the sample size, you are decreasing the likelihood of detecting a true effect if one exists, thus reducing the power of the test.
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a woman put her clothes in the dryer.There is a mix of wool and cotton. After the dryer is finished wool clothes and cotton clothes are stuck together. There's no wool stuck to wool or cotton stuck to cotton.using laws of charge, explain why this is the case
Answers
Answer:
Explanation:
Explanation
There is a Plus charge on one of them (I think it is likely the wool).
There is a minus charge on the other one (So it is cotton most likely.
The point is that like charges repel (move away from each other)
Unlike charges attract. (move close to each other.)
You have a case of unlike charges attracting.
A olvent i found to be 50. 0% oxygen, 37. 5% carbon, and 12. 5% hydrogen. What i the empirical formula of thi olvent
Answers
The empirical formula of the solvent is CH4.
Relative number of atoms
Of H= 25/1 = 25
Of C= 75/12 = 6.25
What is a solvent?
Solvents are a heterogeneous group of structurally different chemicals that can be used to dilute, dissolve, or disperse other compounds. The ability of a solvent to dissolve another molecule depends on the molecular structure and physical properties of both the solvent and the solute. Solvents can be categorized as organic or inorganic and in terms of chemical polarity. Polar solvents include water, alcohols, and other chemicals containing –OH, such as acetic acid, which have the ability to donate H+ and form hydrogen bonds. Polar solvents lacking the –OH group, including acetonitrile, dimethylformamide, and dimethylsulfoxide, are protophilic solvents and are used to dissolve less polar solutes.To know more about solvents and solutes, click the link given below:
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Explain on any two materials that you would expect to use for the wheelchair (both back support and
arm support) with less generation of heat during the hot summers.
Answers
Answer:
In the backrest use materials where it is easy to clean and where they do not absorb fluids, in this way it would be cooler, such as an ecological leather simulator.
And in the armrest as well, but in both areas we must not rule out that if or if it should have even a minimum of padded surface so that the patient or the person who spends most of the day in the wheelchair does not suffer from joint pain.
Explanation:
Some wheelchair factories also implement modern chairs where they are made of stainless steel structures lined with padded material with perforated fabrics that allow breathing and aeration of body areas that have contact with the fabric.
what Element whose symbol, Hg, shares no letters with its name
Answers
what is the osmotic pressure at 25 d of an isotonic saline solution that contains 0.9 g nacl in 100 ml of solution?
Answers
The osmotic pressure of the isotonic saline solution at 25°C is approximately 3.76 atm.
To calculate the osmotic pressure of a solution, you can use the formula:
Osmotic Pressure = (n/V)RT
Where:
n is the number of moles of solute
V is the volume of the solution
R is the ideal gas constant (0.0821 L·atm/(mol·K))
T is the temperature in Kelvin
First, we need to calculate the number of moles of NaCl in the solution:
Number of moles = mass of NaCl / molar mass of NaCl
The molar mass of NaCl is 58.44 g/mol. Therefore:
Number of moles = 0.9 g / 58.44 g/mol
Number of moles ≈ 0.0154 mol
Next, we need to convert the volume of the solution to liters:
Volume = 100 ml / 1000 ml/L
Volume = 0.1 L
Now we can calculate the osmotic pressure:
Osmotic Pressure = (0.0154 mol / 0.1 L) * (0.0821 L·atm/(mol·K)) * (25 + 273) K
Osmotic Pressure ≈ 3.76 atm
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explain the reason, according to bohr’s atomic model, why atomic emission spectra contain only certain frequencies of light.
Answers
According to Bohr's atomic model, the reason why atomic emission spectra contain only certain frequencies of light is due to the quantized energy levels of electrons in atoms.
In Bohr's model, electrons can only exist in specific energy levels, or orbits, around the nucleus. Each energy level corresponds to a certain amount of energy. When an electron jumps from a higher energy level to a lower one, it releases energy in the form of light. This emitted light has a specific frequency that is determined by the difference in energy between the two levels.
The energy levels in an atom are discrete, meaning they can only have certain specific values. This results in the emission of light at specific frequencies, corresponding to the energy differences between the energy levels. These frequencies appear as distinct lines in the atomic emission spectrum.
For example, let's consider the hydrogen atom. According to Bohr's model, the electron in a hydrogen atom can occupy various energy levels. When an electron transitions from a higher energy level to a lower one, it emits light with a specific frequency. Each transition corresponds to a different frequency, and these frequencies are observed as discrete lines in the hydrogen emission spectrum.
This quantization of energy levels in Bohr's model explains why atomic emission spectra contain only certain frequencies of light. The specific energy levels of electrons in atoms restrict the frequencies of light that can be emitted, resulting in the characteristic line spectra observed in experiments.
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How many moles of hydrogen (H2) are required to completely reduce 1 mole of cis-2,3,3- trimethylhepta-1,5-diene
Answers
2 moles of hydrogen (H2) are required to completely reduce 1 mole of cis-2,3,3- trimethylhepta-1,5-diene (C11H16).
What is moles?Moles, in chemistry, is a unit of measurement used to express the amount of a substance. It is equal to 6.022 x 1023 atoms, molecules, ions, or other particles. In other words, a mole contains an exact number of particles, which is known as Avogadro's number. The mole is a convenient way to measure and compare large amounts of a substance. It is also used to measure the amount of energy released or absorbed in a chemical reaction.
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A flexible container hold 2003 cm3 of air at 285k.What would the new volume be if the container were cooled to 18 degrees Celsius?
Answers
Old volume = 200 cm3.
Pressure = 18 degree
New volume= ?
P1V1/ T1 = P2V2/ T2
200 * 18/ 285 = 18 * V2/ 285. New volume will be 1.86 L.
The space occupied within an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity.
Finding an object's volume can help us calculate the quantity needed to fill it, such as the volume of water needed to fill a bottle, aquarium, or water tank.
Thus, New volume will be 1.86 L.
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what volume of methane gas, ch4, reacts to give 5.00 ml of carbon dioxide gas? (assume temperature and pressure remain constant.) ch4(g) o2(g) spark co2(g) h2o(g)
Answers
Carbon dioxide is produced when 5 mL of methane gas interacts.
Methane, a hydrocarbon, is the primary component of natural gas. Methane has an effect on the climate and temperature of the earth because it is a greenhouse gas (GHG). Methane is released into the atmosphere through a variety of natural and anthropogenic (caused by humans) sources.
Methane is non-toxic and safe to breathe in small amounts, but if it is allowed to replace air in large quantities, the absence of oxygen could result in suffocation.
\(CH_{4}(g) + 2O_{2} \rightarrow CO_{2} + 2H_{2}O(g)\)
1 volume of \(CH_{4}\) = 1 volume of \(CO_{2}\)
5 ml of \(CH_{4}\) = 1 × 5 mL CO2
= 5 mL CO2
So, volume of methane = 5mL
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How is the isotope of hydrogen different from the non isotopic form of hydrogen?
Answers
Put the following short sequences of DNA in order by the number of hydrogen bonds they contain, from most to least: 1. GCG 2. TAT ATA CGC 0 3, 2, 1 0 1,3,2 O 1,2,3 0 2,3,1
Answers
The short sequences of DNA in order by the number of hydrogen bonds they contain, from most to least are as follows:1, 3, 2
The number of hydrogen bonds between the DNA base pairs determines the strength of the base pairing interaction between the two complementary strands of DNA. A single hydrogen bond forms between a purine base and a pyrimidine base in the DNA helix. Guanine (G) and cytosine (C) form three hydrogen bonds between them while adenine (A) and thymine (T) form two hydrogen bonds between them.
So, the given short sequences of DNA can be put in order based on the number of hydrogen bonds they contain as follows:
1. GCG (3 hydrogen bonds)
2. TAT (2 hydrogen bonds)
3. ATA CGC (1 hydrogen bond)
Therefore, the correct order is 1, 3, 2 which means that the short sequence that has the highest number of hydrogen bonds is GCG while the short sequence that has the lowest number of hydrogen bonds is ATA CGC.
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Which of the following statements on HPLC modes is true? A. Increasing the polarity of the mobile phase decreases the elution time of polar compounds in normal-phase HPLC B. A non-polar stationary phase is used in normal-phase HPLC C. Compounds have a lower attraction to the mobile phase than to the stationary phase in displacement development D. A polar stationary phase is used in reversed-phase HPLC E. More polar compounds elute first in normal-phase HPLC
Answers
The following statements on HPLC modes are true is more polar compounds elute first in normal-phase HPLC (Option E).
The liquid chromatography (HPLC) is a technique in analytical chemistry employed for the separation, identification, and quantification of elements. It is considered a highly sensitive method, and it works by separating the components in a mixture with the assistance of a solvent under high pressure.
There are two modes of HPLC: Reversed-Phase HPLC (RP-HPLC) and Normal-Phase HPLC (NP-HPLC). In RP-HPLC, a nonpolar stationary phase, such as C18, is used, and polar solvents, such as water, are used as mobile phases. Polar stationary phases, such as silica gel, are used in NP-HPLC, while nonpolar solvents, such as hexane, are used as mobile phases.
More polar compounds have a greater affinity for the polar stationary phase than less polar compounds, which have a higher affinity for the nonpolar mobile phase in NP-HPLC. As a result, less polar compounds elute first in normal-phase HPLC.
Thus, the correct option is E.
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In the rumen, the carbohydrate fermentation end products include
A. acetate.
B. carbon dioxide.
C. methane.
D. all of these
Answers
In the rumen, the carbohydrate fermentation end products include all the above options i.e. acetate, carbon dioxide and methane.
In the rumen, which is a specialized stomach chamber of ruminant animals, the fermentation of carbohydrates by microorganisms produces various end products. These end products include acetate, carbon dioxide, and methane.
Acetate: Acetate is a volatile fatty acid (VFA) produced during carbohydrate fermentation in the rumen. It is an important energy source for the animal, as it can be absorbed from the rumen and utilized as fuel by the animal's body.
Carbon Dioxide: Carbon dioxide (CO2) is a byproduct of fermentation in the rumen. It is released as a gas during microbial metabolism and contributes to the overall gas production in the rumen.
Methane: Methane (CH4) is another byproduct of carbohydrate fermentation in the rumen. It is produced by certain groups of microorganisms called methanogens. Methane is released as a gas and can be expelled by the animal through eructation (belching).
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The structural formulas for two isomers of 1, 2- dichloroethene are shown above. Which of the two liquid has the higher equilibrium vapor pressure at 20 degrees C
Answers
The structural formulas for two isomers of 1, 2- dichloroethene are shown.
In the structural formulas for two isomers of 1, 2- dichloroethene, both isomers have one double bond and two chlorine atoms. 1,2-dichloroethene has two isomers, cis-1,2-dichloroethene and trans-1,2-dichloroethene.The trans-isomer is expected to have a higher equilibrium vapor pressure at 20 °C.
Because it is a straight molecule, the intermolecular forces are weaker, resulting in a higher vapor pressure.Isomers are compounds with the same molecular formula but a different molecular structure.
They can have different physical and chemical properties due to their different structures.
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Which of these statements accurately describes monomers?
Monomers are macromolecules.
Monomers contain double bonds.
Monomers are made of repeating units.
Monomers contain bonds between metals.
Answers
Answer:
Monomers contain bonds between metals
Answer:
B: Monomers contain double bonds
Explanation:
I got it right on Edge
What is Hamlet saying in To Be or Not To Be?.
Answers
The Hamlet saying is To be or Not to be means to be live or not to be live.
The hamlet says that to be or not to be because he is questioning the value of the life. he is question to himself that whether it is worthwhile hanging there. hamlet is in extreme depression. hamlet is fed up with everything around him in the world. hamlet is in confusion whether it is worth to exist. hamlet is dilemma whether to live or die.
Thus, the hamlet says , To be or not to be because he is questioning about value of life whether to live or to die.
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in a precipitation reaction, what symbol identifies the precipitate product?
Answers
A down arrow (↓) or (s) are symbols that are used to represent the precipitation product produce in the reaction.
Precipitation can be defined as a chemical reaction when two reactants solids or liquids or gases when combine together in a solution they produce an insoluble mass of solid called as precipitate. A precipitation reaction occurs when two solutions containing distinct salts having cation and anion pair together to form an insoluble salt called precipitate. When aqueous silver nitrate or (AgNO3) reacts with the potassium chloride or (KCl) solution then a white colored solid precipitate of silver chloride or (AgCl) forms, which can be represented by a symbol of (s) in the reaction equation.AgNO3 (aq) + KCl (aq) → AgCl (s) + KNO3(aq)
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One student rubs a balloon against his hair several times. Another student passes a comb through her hair several times. The students place the comb near the balloon and observe that the comb repels the balloon. Which is the most likely reason the comb is able to repel the balloon?
Answers
Answer:
They have like charges
Explanation:
Like charges repel, opposite charges attract
The most likely reason the comb is able to repel the balloon is that, the balloon and the comb have the same electrical charge.
The question is incomplete, the complete question is;
One student rubs a balloon against his hair several times. Another student passes a comb through her hair several times. The students place the comb near the balloon and observe that the comb repels the balloon. Which is the most likely reason the comb is able to repel the balloon?
A.The balloon has a positive charge and the comb is neutral.
B. The balloon and the comb have the same electrical charge.
C. The balloon has a negative charge and the comb is neutral.
D. The balloon and the comb have opposite electrical charges
When the student rubs a balloon against his hair several times or another student passes a comb through her hair several times, static charges are built up on the balloon and the comb.
One of the ways by which a neutral object can be charged is by friction. That is, rubbing it against another object repeatedly.
The fact that when the students place the comb near the balloon and observe that the comb repels the balloon means that both the comb and the balloon acquired the same kind of charge after friction.
Therefore, the balloon and the comb have the same electrical charge.
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