Part 1. A chemist reacted 12.0 liters of F2 gas with NaCl in the laboratory to form Cl2 gas and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1.50 atm.
F2 + 2NaCl → Cl2 + 2NaF
Answers
The mass of NaCl that reacted with F2 gas is 21.5 grams.
PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature.
First, we need to find the number of moles of F2 gas that reacted with NaCl. We can use the given volume of 12.0 liters and the conditions of 280 K and 1.50 atm to calculate the number of moles of F2 gas:
n = PV/RT
n = (1.50 atm) x (12.0 L) / [(0.0821 L·atm/mol·K) x (280 K)]
n = 0.736 moles of F2 gas
According to the balanced chemical equation, 1 mole of F2 gas reacts with 2 moles of NaCl. Therefore, the number of moles of NaCl that reacted with F2 gas is:
n(NaCl) = n(F2)/2
n(NaCl) = 0.736/2
n(NaCl) = 0.368 moles of NaCl
Finally, we can use the molar mass of NaCl to convert the number of moles of NaCl to mass:
m(NaCl) = n(NaCl) x M(NaCl)
m(NaCl) = 0.368 mol x 58.44 g/mol
m(NaCl) = 21.5 g of NaCl
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Related Questions
help
The element which contains 8 electrons in the
neutral atom is
1. boron (B).
2. fluorine (F).
3. oxygen (O).
4. nitrogen (N).
Answers
Answer: oxygen
Explanation:
If the atom is neutral, it must have an equal number of protons and neutrons. Thus, we are looking for the element with 8 protons.
The number of protons an element has equals its atomic number.
So, we are looking for the element with an atomic number of 8, which is oxygen
How many moles are in a sample of toxic chlorine gas if it occupies a volume of 18 liters, at a temperature of 78 Celsius and a pressure of 11.5 atm?
Answers
1a. Review What holds the hydrogen and oxygen
atoms together in a water molecule?
Answers
A student dissolves 1 gram of sugar in 10 grams of water. She then
determines the mass of the solution. What is the mass of the dissolved
sugar and water? PS1-5 DOK 1
more than 11 grams<>11 grams
Answers
Answer:
11 grams
Explanation:
your welcome!!!!!
What is the area of a medium triangle?
Answers
Answer: Area of a Triangle Equals Base x Height / 3
Explanation: Hope this works
he nucleus of an atom is small compared to the size of the atom. why is this consistent with rutherford's nuclear theory? the nucleus of an atom is small compared to the size of the atom. why is this consistent with rutherford's nuclear theory? rutherford's nuclear theory states that most of the mass of an atom and all of its electrons are contained in a small core called the nucleus. rutherford's nuclear theory states that the nucleus of an atom is small compared to the size of the atom, and, therefore, the nucleus has a relatively low mass compared to the mass of an atom. rutherford's nuclear theory states that the nucleus is small but contains about half of the mass of an atom. rutherford's nuclear theory states that most of the mass of an atom and all of its positive charge are contained in a small core called the nucleus. request answer
Answers
The nucleus of an atom is small compared to the size of the atom because of Rutherford's nuclear theory. Rutherford's nuclear theory states that most of the mass of an atom and all of its positive charge are contained in a small core called the nucleus.
This statement is consistent with the fact that the nucleus of an atom is small compared to the size of the atom. Rutherford's nuclear theory states that the nucleus of an atom is small compared to the size of the atom, and, therefore, the nucleus has a relatively low mass compared to the mass of an atom.
Rutherford's nuclear theory states that the nucleus is small but contains about half of the mass of an atom. The nuclear theory was discovered by Ernest Rutherford in 1911.
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What is an atom?
Hshshdgwbdhwjshdhshshsbsh
Answers
What are the different chemical properties of the element Cobalt?
Answers
Answer:
It is a hard ferromagnetic, silver-white, lustrous, brittle element.
It is stable in air and does not react with water.
Like other metals, it can also be magnetized.
With dilute acids, it reacts slowly.
The metal melts at 1495 °C and boils at 2927 °C
Explanation:
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from a full-strength hydrogen peroxide solution, how would you prepare 240 ml of two-thirds strength hydrogen peroxide solution for a wound irrigation using normal saline as the diluent?
Answers
To prepare 240 mL of two-thirds strength hydrogen peroxide solution for a wound irrigation using normal saline as the diluent, you need to mix 160 mL of full-strength hydrogen peroxide with 80 mL of normal saline.
This creates a total volume of 240 mL, with two-thirds of it being hydrogen peroxide and one-third being normal saline.
When using a hydrogen peroxide solution for wound irrigation, it is important to ensure that the concentration of the solution is appropriate for the type of wound being treated. Generally, hydrogen peroxide solutions of 2-3% concentration are used for wound irrigation. Higher concentrations can cause tissue damage and skin irritation.
Additionally, it is important to ensure that the diluent used is appropriate for the type of wound being treated. For example, normal saline is most commonly used for wound irrigation, but other diluents such as sterile water may be used for different types of wounds.
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Jason loves space and to go see Etelmann Observatory. He learns that stars emit light and we can tell what gases the stars composed of by the wavelengths of light they emit. How
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Answer:
Stars emit light because they are extremely hot and produce energy through nuclear fusion reactions in their cores. The light that stars emit is a combination of different wavelengths, and each wavelength corresponds to a specific type of energy. By analyzing the wavelengths of light that a star emits, we can determine what types of gases are present in the star.
When a gas absorbs light of a certain wavelength, it leaves behind a characteristic "fingerprint" in the star's spectrum. By studying this fingerprint, astronomers can determine the types and amounts of gases present in the star. This is known as spectroscopy, and it is a powerful tool that allows astronomers to study the properties of stars and other celestial objects.
Etelmann Observatory is a great place to learn more about the stars and how we study them. You can see the stars up close through telescopes and learn about the different types of light that they emit. You can also learn about spectroscopy and how it helps us understand the properties of stars and other celestial objects.
Explanation:
the most specific method for the assay of glucose in all body fluids utilizes:
Answers
The most specific method for measuring glucose in body fluids is the enzymatic glucose oxidase/peroxidase assay. It involves the enzymatic conversion of glucose to gluconic acid and hydrogen peroxide, followed by a colorimetric measurement of the reaction product. The glucose concentration in the sample is determined by comparing its color intensity to a calibration curve generated from known glucose standards.
The most specific method for the assay of glucose in all body fluids is enzymatic glucose oxidase/peroxidase assay. Here are the steps involved in this method:
1. Sample collection: Obtain the body fluid sample (e.g., blood, urine, cerebrospinal fluid) that contains glucose.
2. Sample preparation: If necessary, prepare the sample by removing any interfering substances or diluting it to an appropriate concentration.
3. Enzymatic reaction: Mix the prepared sample with a reagent containing glucose oxidase and peroxidase enzymes. Glucose oxidase converts glucose to gluconic acid and hydrogen peroxide, while peroxidase reacts with hydrogen peroxide to produce a colored compound.
4. Colorimetric measurement: Measure the color intensity of the reaction product using a spectrophotometer at a specific wavelength. The intensity of the color is directly proportional to the concentration of glucose in the sample.
5. Calibration: Create a calibration curve by measuring known concentrations of glucose standards under the same conditions as the sample. This curve helps determine the glucose concentration in the sample based on its color intensity.
6. Calculation: Use the calibration curve to calculate the glucose concentration in the sample based on the measured color intensity.
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choose the reaction that illustrates delta H *f for Ca(NO3)2.
a.) Ca (s) + N2 (g) + 3O2 ---> Ca(NO3)2 (s)
b.) Ca2 (aq) + 2 NO3- (aq) ---> Ca(NO3)2 (aq)
c.) Ca (s) + 2N (g) + 6O (g) ---> Ca(NO3)2 (s)
d.) Ca(NO3)2 (aq) ---> Ca2+ (aq) + 2NO3- (aq)
e.) Ca(NO3)2 (s) ---> Ca(s) + N2 (g) + 3 O2 (g)
Answers
The reaction that illustrates delta H *f for Ca(NO3)2 is b.) Ca2+(aq) + 2NO3−(aq)⟶ Ca(NO3)2(aq). .Hence, option b.) is the correct answer.
Explanation: Standard enthalpy change of formation, ΔHf°, is the amount of heat absorbed or released when one mole of a compound is formed from its elements under standard state conditions.
ΔHf° for elements is zero. Standard state conditions include pressure 1 atm, temperature 298 K or 25°C and concentration 1 M.
The reaction which illustrates ΔHf° for Ca(NO3)2 is given by Ca2+(aq) + 2NO3−(aq)⟶ Ca(NO3)2(aq).
Hence, option b.) is the correct answer.
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how are conditions of pressure and temperature at which two phases coexist in equilibrium
Answers
The conditions of pressure and temperature at which two phases coexist in equilibrium are determined by the phase diagram of the substance.
The phase diagram shows the various phases of a substance at different pressures and temperatures. At the point where two phases coexist in equilibrium, the pressure and temperature are such that the chemical potentials of the two phases are equal. This is known as the phase boundary or coexistence curve. The conditions can vary depending on the substance and the pressure-temperature range being considered. For example, for water, the conditions for coexistence of ice and water are at a pressure of 1 atm and a temperature of 0°C, while the conditions for coexistence of water and steam are at a pressure of 1 atm and a temperature of 100°C.
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Atoms having equal or nearly equal electronegativities are expected to formA) no bondsB) nonpolar covalent bondsC) ionic bondsD) covalent bondsE) polar covalent bonds
Answers
Atoms having equal or nearly equal electronegativities are expected to form nonpolar covalent bonds. The correct answer is B.
Electronegativity is the measure of the attraction of an atom for electrons in a covalent bond.
When atoms have equal or similar electronegativities, they have an equal or nearly equal attraction for the shared electrons, resulting in an even distribution of electron density between the atoms.
In a nonpolar covalent bond, the electrons are shared equally between the two atoms, resulting in neutral charge distribution and no net dipole moment.
This type of bonding typically occurs between two atoms of the same element (e.g., H2, O2, Cl2) or between different elements with similar electronegativities (e.g., C-H, C-C, and C-N bonds in organic molecules).
In contrast, when atoms have significantly different electronegativities, they form polar covalent bonds or even ionic bonds.
In a polar covalent bond, the electrons are shared unequally between the atoms, resulting in a partial positive charge on one atom and a partial negative charge on the other, creating a net dipole moment.
In an ionic bond, one atom transfers an electron to another atom, resulting in a complete transfer of electron(s) from one atom to the other, creating ions with opposite charges that attract each other.
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someone help me on this one pls
Answers
Answer:
i believe it is mass and distance
Explanation:
i hope that was correct, good luck by the way.
Answer:
I think it's mass and distance
How does viscosity affect boiling point?
A. Higher viscosity = Lower boiling point
B. Lower viscosity = Higher boiling point
C. Higher viscosity = Higher boiling point
D. Viscosity has no effect on boiling point
Answers
Which best describes what tends to occur in groups that results in an increase in atomic radius?
Answers
After finishing a lab, you have some chemicals left over. You do not want to waste
them, so you carefully pour them back into the container you got them from.
Answers
Answer:
Instead, pour a small amount into a beaker or clean weigh dish. Once you have added a chemical to a container, label it promptly. When you are finished with the experiment, dispose of the excess chemical as chemical waste. Do not simply pour the excess chemical down the sink.
What is the atomic number of the as yet undiscovered element in which the 8s and 8p electron energy levels?
Answers
The atomic number of the undiscovered element is 168
Element 118 will have just filled its 7p orbitals. therefore the predicted element to fill completely up to its 8 p orbital would have to filled a whole set of s, p, d, f and g orbitals
That's another 2 + 6 + 10 +14 + 18 = 50 electrons
To determine the total number of quantum numbers we have to find
Nml × Nms
we have Nml × Nms = ( 2 + 1 ) × 2
8s + 8P + 7d + 6f + 5g = 2 + 6 + 10 + 14 + 18 = 50
The element right below should be
Z = 118 + 50
= 168
Hence the atomic number of the undiscovered element is 168
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Where can information regarding specific chemical safety be found?.
Answers
Information regarding specific chemical safety can be found in : MSDS
What is MSDSMSDS ( material safety data sheet ) is used in the communication of chemical hazards and ways of preventing these hazards while working with them in the laboratory. each section of the MSDS contains unique/specific informations related to each chemical.
Hence we can conclude that information regarding specific chemical safety can be found in MSDS
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When oil and gas are trapped by impenetrable layers of rock, what will form?
Answers
Answer:
These traps hold oil and gas because the earth has been bent and deformed in some way. The trap may be a simple dome (or big bump), just a “crease” in the rocks, or it may be a more complex fault
All pore spaces in the rocks are filled with fluid, either water, gas, or oil. Gas, being the lightest, moves to the top. Oil locates right beneath the gas, and water stays lower.
Once the oil and gas reach an impenetrable layer, a layer that is very dense or non-permeable, the movement stops. The impenetrable layer is called a “cap rock.”
1. Ito ay binubuo ng apat na parte/bahag, isa na rito ang pinakamahalaga ang Lobo ng Usapan.
B. Tabloid
C. Komiks
A. Pahayagan
D. Aklat
Answers
Explanation:sana makatulong
the atomic mass of an element is 32.07 u and its atomic number is 16. the element forms a simple ion. the ion will most likely have a charge of
Answers
This atom is most likely to have a charge of -2, +4, +6 oxidation state.
Sulfur has mass the of 32.07 u and its atomic number is 16.
In the oxidation states of 2, 4, and 6, respectively, sulfur can form the compounds sulfide , sulfite, and sulfate. It blends with almost all other components. Because sulfur exhibits catenation, or the bonding of one identical atom to another, second only to carbon, some sulfur compounds have an interesting property. As a result, sulfur atoms can organize into chains and ring systems. There are the major important sulfur compounds and chemical groups.
Sulfur usually is on -2, +4 or +6 level of oxidation states (but it can be also on the 5, 3, 2, 1, -1 ).
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Which action happens at the microscopic scale as the temperature of a substance decreases and it eventually freezes?
Answers
The speed of the particles rises with the temperature of the solid, liquid, or gas. The particles slow down with decreasing temperature.
A liquid can turn into a solid if it is cooled down far enough.
Why does a liquid become a solid when its temperature drops?The average kinetic energy of the molecules falls as a liquid cools.
The liquid eventually turns into a solid when the quantity of heat removed is sufficient to cause the molecules to be attracted to one another.
Freezing is the process of transitioning from a liquid to a solid.
It loses thermal energy when the liquid cools. Its constituent particles therefore decelerate down and converge.
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In one to two sentences, explain a similarity and a difference between the particles in liquid water at 100°C and the particles in
steam at 100°C. (2 points)
Answers
A similarity between the particles in liquid water and the particles in steam is their chemical composition whereas a difference between the particles in liquid water and the particles in steam is their state of matter.
What are liquid and steam?Steam refers to the gas which is formed when water passes from the state of liquid to the gaseous state. Steam is formed when water molecules break the bonds i.e. hydrogen bonds that keep them together while on the other hand, a liquid is a sample of matter that takes the shape of a container in which it is placed. The term liquid is used to show the state or condition of matter.
So we can conclude that chemical composition is the similarity between liquid and steam while on the other hand, the difference in the state of matter.
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Listen Dredging can be an effective technique in acquiring uranium. a) True b) False
Answers
The Dredging can be an effective technique in acquiring uranium is the correct option is b) False.
The dredging is removal of the sediments and the debris from the bottom of the lakes , the harbors, rivers and the other water bodies. It is the routine of the water ways around worlds. It is because of the sedimentation. The sedimentation is the natural process of the sand and the slit washing away the downstream. It gradually fills the channels and the harbors.
Thus the dredging is the extraction of the material from the water environment. The dredging improves the water features.
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How many joules of heat are absorbed when 73 g water are heated from 30*C to 43*C? *
Answers
Answer:
3966.82 J
Explanation:
q=sm∆T
q=73×13×4.18
the specific heat for water is 4.18
Answer:
\(\boxed {\boxed {\sf 39,668.2 \ Joules}}\)
Explanation:
We are given the mass and change in temperature, so we must use this formula for heat energy:
\(q=mc \Delta T\)
The mass is 73 grams. Water's specific heat is 4.18 J/g × °C. Let's calculate the change in temperature
ΔT= final temperature - initial temperatureΔT= 43 °C - 30°C ΔT= 13 °CNow we know all the variables and can substitute them into the formula.
\(m= 73 \ g \\c= 4.18 \ J/g* \textdegree C \\\Delta T= 13 \ \textdegree C\)
\(q= (73 \ g )(4.18 \ J/g*\textdegree C)(13 \textdegree C)\)
Multiply the first numbers together. The grams will cancel.
\(q= 3051.4 \ J/\textdegree C (13 \textdegree C)\)
Multiply again. This time, the degrees Celsius cancel.
\(q= 39668.2 \ J\)
39,668.2 Joules of heat energy are absorbed.
what is the molarity of a solution that was prepared by dissolving 82.0 g of CaCl2 in enough water to make 812 mL of solution
Answers
The molarity of a solution that was prepared by dissolving 82.0 g of calcium chloride in enough water to make 812 mL of solution is 0.91M.
How to calculate molarity?Molarity is the concentration of a substance in solution, expressed as the number moles of solute per litre of solution
The Molarity of a solution can be calculated using the following formula:
Molarity = no of moles ÷ volume
According to this question, a solution was prepared by dissolving 82.0 g of calcium chloride in enough water to make 812 mL of solution. The molarity can be calculated as follows:
no of moles of Calcium chloride = 82.0g ÷ 110.98 g/mol = 0.74 mol
Molarity = 0.74 ÷ 0.812 = 0.91M
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1. Athletes eat food that are high in
Answers
Answer:
Athletes can increase their stores of glycogen by regularly eating high-carbohydrate foods.
Explanation:
If carbohydrate in the diet is restricted, a person's ability to exercise is compromised because there is not enough glycogen kept in storage to fuel the body.
Answer:
carbohydrates
Explanation:
Athletes can increase their stores of glycogen by regularly eating high-carbohydrate foods. If carbohydrate in the diet is restricted, a person's ability to exercise is compromised because there is not enough glycogen kept in storage to fuel the body.
The reaction A + BC --> B+ AC is a
reaction.
Answers
Explanation:
its answer is displacement reaction