what is the formula mass of MgO (how much does one mole of it weigh)

Answer:

Combination reaction

Explanation:

In Chemistry, elements and compounds are involved in a process called chemical reactions, which are of different types namely: combination, decomposition, double replacement, combustion etc. A combination reaction is that reaction in which two or more substances called the REACTANTS combine together to form a single new substance called the PRODUCT.

In this case, a reaction is depicted as follows:

2SO2(g) + O2(g) --> 2SO3(g)

In this reaction, compound SO2 combines chemically with element O2 to form a single new compound SO3. Hence, this is a type of COMBINATION REACTION.

The correct option is $26785.To calculate the total cost per equivalent unit using the weighted average method, we need to consider the costs incurred in both the beginning work in process and the units added during the period.

First, let's calculate the equivalent units of production for both conversion and materials:

Conversion costs:

Beginning work in process: 400 units × 20% complete = 80 equivalent units

Units added during the period: 2,000 units × 40% complete = 800 equivalent units

Total equivalent units for conversion = 80 + 800 = 880 equivalent units

Material costs:

Beginning work in process: 400 units × 30% complete = 120 equivalent units

Units added during the period: 2,000 units × 50% complete = 1,000 equivalent units

Total equivalent units for materials = 120 + 1,000 = 1,120 equivalent units

Next, let's calculate the total costs incurred:

Conversion costs:

Beginning work in process cost: $14,880

Costs added during the period: $409,200

Total conversion costs = $14,880 + $409,200 = $424,080

Material costs:

Beginning work in process cost: $9,900

Costs added during the period: $180,080

Total material costs = $9,900 + $180,080 = $189,980

Now, we can calculate the total cost per equivalent unit:

Total cost per equivalent unit = (Total conversion costs + Total material costs) / (Total equivalent units for conversion + Total equivalent units for materials)

Total cost per equivalent unit = ($424,080 + $189,980) / (880 + 1,120)

Total cost per equivalent unit ≈ $267.85

Therefore, the correct option is $26785.

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Oxygen is indeed a gas under normal circumstances. However, the gas transforms into a liquid or a solid at low temperatures and/or high pressure. The air has 0.21 atm of oxygen in it.

The energy-producing process that powers the metabolism rate of most living organisms, respiration, depends heavily on oxygen. All living things, including humans, depend on the air that we breath to survive.

Oxygen is produced by cyanobacteria, algae, and plants. Photosynthesis is how they accomplish this. They convert both water and carbon dioxide create glucose and oxygen using the sunlight's energy. The sugars are used in their diet. Oxygen has small intermolecular forces.

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If 1.50 × 1024 molecules of oxygen are burned in a combustion reaction. The mass of O2 consumed in the reaction is 80.0 g.

The balanced chemical equation for the combustion of oxygen (O2) is:

2 O2 + energy → 2 O

This equation tells us that for every 2 molecules of O2 that are burned, 2 molecules of O are produced.

We are given the number of molecules of O2, which is 1.50 × 10^24. To determine the mass of O2 consumed in the reaction, we need to use the molar mass of O2 and stoichiometry.

The molar mass of O2 is 32.00 g/mol (2 × 16.00 g/mol). We can use this molar mass to convert the number of molecules of O2 to its mass:

1.50 × 10^24 molecules O2 × (1 mol O2 / 6.022 × 10^23 molecules O2) × (32.00 g O2 / 1 mol O2) = 80.0 g O2

Therefore, the mass of O2 consumed in the reaction is 80.0 g.

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Answer:

1. Four daughter cells

2. Create gametes

3. Half

4. Organism

5. Multiplication division

6. Copies

7. Growth and repair

Explanation:

Mitosis and meiosis are the two major types of cell division that occur in living cells. Mitosis is the process whereby a cell produces TWO daughter cells that are genetically identical to the parent cell. In mitosis, EXACT OR SAME copies of the daughter cells are made with no variation whatsoever. The purpose of mitosis is for the growth and repair of living tissues in organisms that undergo them. For this reason, mitosis is termed a MULTIPLICATION DIVISION.

On the other hand, meiosis is a division which produces FOUR daughter cells that are genetically different from the parent cell. Each of the four daughter cells have their chromosomal number reduced by half since the purpose of meiosis is to create gametes or sex cells i.e a diploid organism (2n) will produce haploid gametes (n). The egg cell (female) and sperm cell (male) produced by meiosis later combines to form an organism with unique traits of both parents.

J.J. Thomson observed cathode rays with every element he tested because cathode rays are a fundamental property of electrical discharge in a vacuum.

Cathode rays are streams of electrons emitted from the negatively charged electrode, known as the cathode, in a vacuum tube.

Thomson conducted his experiments using cathode ray tubes, which consist of a sealed glass tube with a cathode and an anode, connected to a high-voltage power supply. When the high voltage is applied, a current flows from the cathode to the anode, resulting in the emission of cathode rays.

Cathode rays were observed to have certain consistent characteristics, regardless of the material of the cathode or the gas present in the tube. These characteristics include;

Straight-line motion: Cathode rays travel in straight lines from the cathode to the anode. They can be deflected by electric and magnetic fields, indicating that they have a negative charge.

Independent of the cathode material: Thomson found that cathode rays were produced regardless of the material used as the cathode. Whether the cathode was made of metals, such as copper or aluminum, or non-metals, cathode rays were still emitted.

Independent of the gas present: Thomson also observed cathode rays in tubes containing different gases, such as hydrogen, nitrogen, or argon. The presence of cathode rays was not dependent on the gas used.

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Thomson saw cathode rays with every element tested, which led to the discovery of the electron as a fundamental particle.

Thomson's observation of cathode rays with every element tested was a significant discovery in the field of physics. During his experiments with cathode rays, Thomson observed that regardless of the material used for the cathode, cathode rays were always produced. This observation challenged the prevailing belief that cathode rays were a property of specific elements or compounds.

Thomson's experiments led him to propose the existence of a fundamental particle, which he called the electron. He hypothesized that cathode rays were composed of these negatively charged particles. This groundbreaking discovery revolutionized the understanding of atomic structure and laid the foundation for the development of the atomic model.

Thomson's observation of cathode rays with every element tested provided evidence for the existence of electrons as fundamental particles that are present in all matter. It demonstrated that electrons are not specific to certain elements but are a fundamental component of atoms.

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Before the advent of electrospray ionization (ESI) mass spectrometry, analysis of compounds was limited to molecules with a molecular weight of less than 1000 amu (atomic mass units).

This was due to the fact that many molecules with a higher molecular weight were not volatile enough to be analyzed using traditional mass spectrometry methods.

Additionally, the introduction of electrospray ionization allowed for the analysis of molecules in their native state, as opposed to traditional methods which often required the molecules to be fragmented first. This provided a much more accurate representation of the analyzed molecules, which was invaluable for the analysis of complex molecules such as proteins or nucleic acids.

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Answer:

Answer:

600 grams

Explanation:

The value of the mole is equal to the number of atoms in exactly 12 grams

12x50=600

Answer:

It's the first or the second answer.

Explanation:

Environmental changes affect animals depending on their ability to adapt to new conditions.

An adaptation is any type of phenotypic feature associated with a higher fitness in a particular environment.

Adaptations are features that allow organisms to adapt to challenging environmental conditions.

In conclusion, environmental changes affect animals depending on their ability to adapt to new conditions.

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Sea level rise, ocean heat waves, coral bleaching, and the melting of ocean-terminating glaciers and ice sheets around Greenland and Antarctica are all effects of rising ocean heat content.

About 90% of the heat produced by growing emissions has already been absorbed by the ocean as of today. Unprecedented cascade repercussions result from the ocean's temperature shift as a result of the extra heat and energy.

Sea surface temperatures are rising and the sea level is rising as a result of the oceans absorbing more heat as a result of greenhouse gas emissions. Climate patterns will shift as a result of changes in ocean temperatures and currents brought on by climate change.

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Answer: There are 2.161 x 10^24 molecules present in 3.6 moles CH₁.

Explanation:

Molecules are the the lowest fundamental unit of a chemical molecule that can participate in a chemical reaction is a group of bound atoms. Avogadro's number is used to calculate the number of molecules present in a mole of a substance

Avogadro's number of particles, or around 6.022 x 1023 molecules, are present in one mole of any substance. Therefore the following would be present in 3.6 moles of CH1:

2.161 x 1024 particles are equal to 3.6 moles times 6.022 x 1023 particles per mole.

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If in a gas the volume is held constant and the temperature increases, pressure exerted by the gas also increases.

Ideal gas law

The gas law which relates the macroscopic properties of ideal gases is known as ideal gas law. A gas is known as an ideal gas when its particles (a) do not attract or repel one another and (b) take up no space (have no volume). The ideal gas law equation is given as the following,

(PV = nRT)

Where,

P is pressure

V is volume

R is the universal gas constant

T is the temperature and

n is the number of moles

As we can see from the equation that T is directly proportional to P so when V is kept constant and T increases P also increases.

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Explanation:

4Al+3C+H2O→4Al(OH)3+3CH4

Balanced reaction:- 4Al+3C+HH O→4Al(OH)3+3CH4

Answer:

3.34 M or 3.34 mol/L

Explanation:

The formula for molarity is moles of solution ÷ liters of solution. So, we have to convert grams into moles and mL to L.

To convert grams to moles, first find the molar mass of CH₃COOH by looking at the atomic mass of each individual element.

C - 2(12.01) = 24.02

H - 4(1.01) = 4.04

O - 2(16.00) = 32.00

= 60.06

Now divide the number of grams by the molar mass.

10.0 g CH₃COOH ÷ 60.06 g = 0.167 mol CH₃COOH

To convert milliliters to liters, divide by 1000.

50.0 mL ÷ 1000 = 0.05 L

Now we can calculate the molarity.

M = moles of solution ÷ liters of solution

= 0.167 mol ÷ 0.05 L

= 3.34 M or 3.34 mol/L

The molarity is 3.34 M.

Hope that helps.

Answer:

101.62 grams of water is given o when 62.1 g of propane burns.

Explanation:

Propane gas (C₃H₈) burns with oxygen gas and products carbon dioxide gas and liquid water. The balanced reaction is:

C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O

By stoichiometry, the following amounts of moles of each compound participate in the reaction:

Being the molar mass of each compound:

By stoichiometry, the following mass quantities of each compound participate in the reaction:

Then you can apply the following rule of three: if by stoichiometry 44 grams of propane produces 72 grams of water, 62.1 grams of propane how much mass of water does it produce?

\(mass of water=\frac{62.1 grams of propane*72 grams of water}{44 grams of propane}\)

mass of water= 101.62 grams

101.62 grams of water is given o when 62.1 g of propane burns.

The best spectroscopic tool for distinguishing between 1,3-cyclohexadiene and 1,4-cyclohexadiene would be 13C-NMR spectroscopy. So, correct option is B.

Infrared spectroscopy (IR) would not be the best tool because both isomers have the same functional groups and therefore would have similar IR spectra. UV-Vis spectroscopy would not be the best tool either since both isomers have similar electronic structures and would absorb at similar wavelengths.

Mass spectrometry could potentially differentiate the two isomers based on their mass-to-charge ratios, but 13C-NMR spectroscopy is a more reliable and specific technique for distinguishing between different carbon environments in a molecule.

In 13C-NMR spectroscopy, the isomers would have different chemical shifts due to the different arrangements of the double bonds in the cyclohexadiene ring. Specifically, the carbon atoms adjacent to the double bonds would have different chemical shifts depending on their positions relative to the substituents on the ring.

Therefore, 13C-NMR spectroscopy would be able to differentiate between 1,3-cyclohexadiene and 1,4-cyclohexadiene based on their different chemical shifts in the NMR spectrum.

So, correct option is B.

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Answer:

Metallic bonds are bonds between metals. Metals lose their valence electrons holding the positive metal ions together due to the strong forces of attraction. [Electrons are negatively charged, so the positive metal ions and the electrons attract to each other]

Answer:

31.1111

Explanation:

should be this if not sorry

Answer:

-6.31°C

Explanation:

To solve this problem, we can use the principle of heat transfer:The heat gained by the lead (q_lead) equals the heat lost by the water (q_water).The formula to calculate heat transfer is:

q = m * c * ΔTWhere:

q = heat transfer

m = mass

c = specific heat

ΔT = change in temperatureFor the lead:

q_lead = m_lead * c_lead * ΔT_leadFor the water:

q_water = m_water * c_water * ΔT_waterGiven values:

m_lead = 322 g

c_lead = 0.138 J/gºC

ΔT_lead = T_final - T_initial_lead (unknown)

m_water = 264 g

c_water = 4.18 J/gºC (specific heat of water)

ΔT_water = T_final - T_initial_water = 46°C - 25°C = 21°CSince the heat gained by the lead is equal to the heat lost by the water, we can set up the equation:

m_lead * c_lead * ΔT_lead = m_water * c_water * ΔT_waterSubstituting the given values:

322 g * 0.138 J/gºC * ΔT_lead = 264 g * 4.18 J/gºC * 21°CSimplifying the equation:

44.436 J/ºC * ΔT_lead = 2325.12 J/ºCDividing both sides of the equation by 44.436 J/ºC:

ΔT_lead = 2325.12 J/ºC / 44.436 J/ºC ≈ 52.31°CFinally, we can find the initial temperature of the lead:

T_initial_lead = T_final - ΔT_lead

T_initial_lead = 46°C - 52.31°C ≈ -6.31°CTherefore, the initial temperature of the lead was approximately -6.31°C.

Uranium is a radioactive substance, which is extremely reactive. As a consequence, it cannot be found in the environment in its elemental state. During uranium, mining disturbances can influence both the quality and quantity of the surface water.

Several of the effects of uranium mining are identical to those experienced in other kinds of mining.

Due to the harmful effects of radioactive substances, the uranium mining for the use of nuclear energy has the greatest environmental influence.

Answer:

temperature

Explanation:

Answer:

8 mol of hydrogen will react with 1 mol of sulfur.

Explanation:

We'll begin by writing the balanced equation for the reaction.

This is given below:

8H2 + S8 —> 8H2S

Now, let us carefully observe the mole ratio of the reactants.

This is illustrated:

The mole ratio of the reactants ( i.e H2 and S8) is 8 : 1

From the balanced equation above,

We can thus, concluded that:

8 moles of H2 will reacted with 1 mole of S8.

Answer:

b

Explanation:

edge 2021

Answer:

Mg + 2HCl=== Mg(Cl)2 + H2

The Reaction is a single displacement reaction.

Yes!

This reaction obeys the law of conservation which states that for a closed system... Matter and energy transfer is constant.

Meaning that the Mass of products must equal mass of Reactants

To prove this

lets Calculate the Mass of reactants

24g + 73g=97g.

Mass of Products...

95g + x.

let's calculate the mass of Hydrogen produced.

Note: You can get it using any of the reactants... I'll use Magnesium

Now from the balanced reaction.... 1mole of Mg reacts to produce 1mole of Hydrogen

Moles of Mg=Mass/Molar Mass

Given Mass=24g

Molar mass of Mg=24

Mole of Mg =24/24

=1mole

Since Mole ratio of Mg and H2 is 1:1.... Therefore 1Mole of Hydrogen is produced too.

To get Mass of H2

Again

Mole=Mass/Mm

Known= 1mole of H2 isproduced

Mass of H2 =2g

Mole=Mass/Mm

Mass =Mole x Mm

= 1 x 2

=2g

Now

Total Mass of products is

95 +2 = 97g.

This is the same with the Mass of Reactants

So The Law of Conservation of Mass Holds.

Answer:

Covalent

Explanation:

C. Covalent

The type of bonding which  can be described as a "cooperation" is covalent bonding as there is sharing of electrons.

Covalent bonding is defined as a type of bonding which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

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Answer:

3m/s²

Explanation:

Force applied to an object can be calculated thus;

F = ma

Where;

F = force applied (Newtons)

m = mass of substance (kg)

a = acceleration (m/s²)

According to the information provided in this question, F = 12.0 newtons, m = 4.0 kg, a = ?

Derived from F = m.a

We have; a = F/m

a = 12/4

a = 3

The resultant acceleration of the object is 3m/s².

The molar mass of citric acid (c6h8o7) is 192.124g/mol

The molar mass of baking soda (nahco3) is 84.007g/mol

The molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample and is measured in moles. Molar mass is a mass property, not a molecular property of a substance.

Molar mass is the mass of 1 mole of the sample. To find the molar mass, add up the atomic masses (atomic weights) of all the atoms in the molecule. Use the masses listed in the periodic table or atomic weight table to determine the atomic mass of each element.

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The molar mass of citric acid (C6H8O7) : 192.12 g/mol

The molar mass of citric acid (C6H8O7) : 84.007 g/mol

Baking soda is a monosodium salt of carbonic acid with alkalizing and electrolyte substitution properties. When dissociated, baking soda forms sodium and bicarbonate ions. Ion formation increases plasma bicarbonate and buffers excess hydrogen ion concentration, resulting in an increase in blood pH.

Citric acid is a naturally occurring weak acid in all citrus fruits. If you've ever sunk your teeth in a lemon, you've tasted citric acid. Manufacturers add artificial versions of it to processed foods. Drugs containing citric acid treat health problems such as kidney stones.

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A radionuclide's half-life is the amount of time it takes for half of its radioactive atoms to decay.

Because some atomic nuclei contain excess nuclear charge that makes them unstable, these nuclei undergo radioactive decay to transform into stable nuclei. These substances are known as radioactive substances.

Any of multiple species of the same chemical element with differing masses whose nuclei are unstable and spontaneously produce radiation in the form of alpha, beta, and gamma rays are known as radioactive isotopes, also known as radioisotopes, radionuclides, or radioactive nuclides.

The half-life of carbon-14 is 5,730 years. 5,730 years after the organism perished, just half of the original carbon-14 isotope will be present in the fossil.

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