For the reaction C+ 2H2 → CH4, how many grams of hydrogen are required to produce 5 moles of
methane, CH4 ?
Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer
as 4.0
Use the following molar masses. If you do not use these masses, the computer will mark your
answer incorrect.:
Element
Hydrogen
Carbon
Molar Mass
1
12

Answers

Answer 1

10 mol of H₂ required to produce 5 moles of methane (CH₄)  

What is Mole ratio ?

Mole Ratio is a conversion factor between compounds in a chemical reaction, that is derived from the coefficients of the compounds in a balanced equation.

The mole ratio is therefore used to convert between quantities of compounds in a chemical reaction.

Given reaction ;

                                                  C + 2H₂ -------> CH₄  

from reaction                              2 mol           1 mol

from the question                      x mol           5 mol                       (given)

Now,

x = 2 x 15 / 1 = 10 mol

                     = 10 mol of H₂.

Hence, 10 mol of H₂ required to produce 5 moles of methane (CH₄)  

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Related Questions

Explain one way in which facilitated diffusion is the same as simple diffusion.

Answers

Answer:

they both transport molecules along or down the concentration gradient of the solute and tdo not require energy from an outside source.

10 uses of metals in daily life

Answers

Answer:For jewellery and ornaments, gold, platinum and silver are being used.


For building purposes, iron and steel can be used.Iron and aluminium are used as utensils.

The thermometer uses mercury and helps to monitor the temperature.

The insulation wires are made of aluminium.

Aluminium foils are being used as wrappers for food.In sweets, a silver foil is being used.

To avoid rusting, zinc is used for galvanizing.In vehicles, iron is being used.

For making cable wires, copper is being used.

Explanation:

Answer:

1. For jewellery and ornaments, gold, platinum and silver are being used.

2. For building purposes, iron and steel can be used.

3. Iron and aluminium are used as utensils.

4. The thermometer uses mercury and helps to monitor the temperature.

5. The insulation wires are made of aluminium.

6. Aluminium foils are being used as wrappers for food.

7. In sweets, a silver foil is being used.

8. To avoid rusting, zinc is used for galvanizing.

9. In vehicles, iron is being used.

10. For making cable wires, copper is being used.

Given the balanced equation representing a
reaction:
2H₂ + O₂ → 2H₂O + energy
4. Which mass of oxygen completely reacts with
4.0 grams of hydrogen to produce 36.0 grams of
water?
(1) 8.0 g
(2) 16.0 g
(3) 32.0 g
(4) 40.0 g

Answers

Answer: it would be number 3, 32.0g

Which feature of a balanced chemical equation demonstrates the law of conservation of mass?

Answers

Answer:

A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow.

A thermodynamically-controlled process describes a reaction that ________.

Answers

A thermodynamically-controlled process describes a reaction that the most stable or more stable of two products is formed.

What is a  thermodynamically-controlled process?

A  thermodynamically-controlled process is a reaction in which the ratio of the product formed is determined by the relative stability of the products.

Thermodynamic control ensures that the most stable or more stable of two products is formed.

Therefore, a thermodynamically-controlled process describes a reaction that the most stable or more stable of two products is formed.

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The Cabbage Indicator

Your hypothesis about how to indicate various levels of pH, both acid and base with an indicator:

What liquids were used in the investigation?

Vinegar is an acid. Which liquids produced colors like vinegar?

Baking soda is a base. Which liquids produced colors like baking soda?

Did you see any that did not fit into either color group? If so which one(s)?

Could you determine the relative pH of the liquids by the varying color of the cabbage indicator?

Do you think you could add drops of a base solution into an acid solution until they indicate neutral?
How would you be able to tell when a neutral pH was obtained?


What did you find out from this investigation? Be thoughtful in your answer.

Answers

.A solution that serves as a pH indicator may be made using red cabbage, which is frequently available in homes. In essence, the color of the cabbage depends on the acidity of the solution and a pigment molecule called flavin or anthocyanin.

To determine whether a material is an acid or a base, red cabbage indicator is a purple-colored solution

Vinegar is an acid and its pH value is less than 7 and hence

Red color is produced

Baking soda is base and its pH value is greater than 7 and between 8-9  

and the color produced is sky blue

Bleach is the green which is also a basic and because the pH value is 10-11

Householder cleaner is having pH 11-13 which is basic and hence the yellow is the color of household cleaner .

A basic solution goes away from being basic and toward the center of the pH scale when an acid is introduced. The base is "neutralized" in this manner.

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A car manufacturer needs to assemble the maximum number of cars using the following equation: 1 body frame + 4 wheels + 2 headlights + 2 brakes + 1 engine It has 48 body frames, 64 headlights, 80 wheels, 60 brakes and 30 engines. What is the limiting reactant in this case?

Answers

The wheels will be completely used up and  it is the limiting reactant in this case.

What is a limiting reactant?

The limiting reactant is the reactant that is completely used up in a reaction, and thus determines when the reaction stops.

60 breaks will be used for 30 engines and 30 body frame80 wheels will be used for 20 engines and 20 body frame64 headlights will be used for 32 engines and 32 body frame

The wheels will be completely used up and  it is the limiting reactant in this case.

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Give the formula of the compound formed from the following sets of elements,
- Calcium and Fluorine
- Hydrogen and Sulfur
- Nitrogen and Hydrogen
- Carbon and Chlorine
- Sodium and Oxygen

Answers

[tex]1) \text{ } \text{CaF}_{2}\\\\2) \text{ } \text{H}_{2}\text{S}\\\\3) \text{ } \text{NH}_{3}\\\\4) \text{ } \text{CCl}_{4}\\\\5) \text{ } \text{Na}_{2}\text{O}[/tex]

You are trying to determine the
mass of sodium chloride required to
create a 0.875 m solution in 534 g of water. How many moles of NaCl are required?
[?] mol NaCl

Answers

The number of mole of NaCl required to prepare the solution is 0.467 mole

What is molality?

The molality of a solution is simply defined as the mole of solute per kilogram of water. It is expressed mathematically as

Molality = mole / mass (Kg) of water

How to determine the mole of NaCl requiredMolality = 0.875 MMass of water = 534 g = 534 / 1000 = 0.534 KgMole of NaCl =?

Molality = mole / mass (Kg) of water

0.875 = mole of NaCl / 0.534

Cross multiply

Mole of NaCl = 0.875 × 0.534

Mole of NaCl = 0.467 mole

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An ice cube absorbs 353 cal of
energy from its surroundings.
How many joules of energy is
this?

Answers

Answer:

1482.6 J

Explanation:

353 cal * 4.2 J / 1 cal = 1482.6 J

An ice cube absorbs 353 cal of energy from its surroundings. Number of joules of energy is 1482.6 Joules.

What is Energy?

The ability to do work is called as energy. Work done is product of force and displacement. Energy is of different types as sound energy, kinetic energy, potential energy, electrical energy, light energy etc.

Law of conservation of energy states that energy can neither be created nor destroyed, but it can be transferred from one form to another.

Molecules can move so they show kinetic energy, molecules can be there at many positions so they can show potential energy, molecules can vibrate so they can show sound energy but molecules can only absorb light hence they can't have light energy.

1 calorie of energy has 4.2 Joules.

Given, 353 Calories of Energy

Hence, 353 Calories of Energy has 1482.6 Joules.

Therefore, An ice cube absorbs 353 cal of energy from its surroundings. Number of joules of energy is 1482.6 Joules.

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Which best describes two ways in which hydrogen is involved in photosynthesis?
O1-Hydrogen is stored in leaves of plants.
2-Hydrogen combines with carbon dioxide to make glucose.
O1-Hydrogen is stored in leaves of plants.
2- Hydrogen combines with oxygen to make water.
O 1-Hydrogen enters plants as a component of water.
2-Hydrogen combines with carbon dioxide to make glucose.
O1-Hydrogen enters plants as a component of water.
2- Hydrogen combines with oxygen to make carbon dioxide.

Answers

Answer:

1- Hydrogen enters plants as a component of water.

2-Hydrogen combines with carbon dioxide to make glucose.

Explanation:

Hydrogen enters the plant bonded with Oxygen as water (H2O).

The water molecule splits and the Hydrogen combines with carbon dioxide to make glucose.

Answer:

1 - Hydrogen enters plants as a component of water.

2 - Hydrogen combines with carbon dioxide to make glucose.

Explanation:

Which type of electromagnetic wave has less energy than a microwave?
OA. Ultraviolet wave
OB. Radio wave
O C. An X-ray
OD. Infrared wave

Answers

Radio waves.

From lowest to highest it is radio wave, microwave, infrared, visible light, ultraviolet, x ray, and then gamma.


the law of definite proportions was first stated by
a. lavoisier
b. galileo
c. proust
d. dalton

Answers

Answer:

C.proust

Explanation:

Proust's law of definite proportions.

A N S W E R :

d) John Dalton

E X P L A N A T I O N :

The law of definite proportions was first put forward by the French chemist Joseph Louis Proust in 1779. The discovery that mass was always conserved in chemical reactions was soon followed by the law of definite proportions, which states that a given chemical compound always contains the same elements in the same proportions by mass.

The law of constant proportions is often referred to as Proust’s law of definite proportions.

For example, in a nitrogen dioxide (NO2 ) molecule, the ratio of the number of nitrogen and oxygen atoms is 1:2, but the mass ratio is 14:32 (or 7:16).

For example, pure water will always contain hydrogen and oxygen in a fixed mass ratio (a gram of water consists of approximately 0.11 grams of hydrogen and 0.88 grams of oxygen, the ratio is 1:8).

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Whose view that matter is infinitely divisible was considered correct for most of the last two millennia?.

Answers

Aristotle and Democritus (to some extent) view that matter is infinitely divisible was considered correct for most of the last two millennia

What is Matter ?

Anything that occupies space and have some mass is known as matter.

Aristotle believed that everything was comprised of earth, air, water, and fire, which were infinitely divisible.

Democritus stated that matter was subdivided into indivisible and immutable particles that created the appearance of change when they joined and separated from others.

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The bright-line emission spectrum of an element can best be explained by.

Answers

The light emitted by an element when its electrons return to a lower energy state can be viewed as a bright line emission spectrum.

What is Emission spectrum ?

The distribution of electromagnetic radiation released by a substance whose atoms have been excited by heat or radiation.

A spectroscope can be used to determine which frequencies have been emitted by a substance.

An emission line will appear in a spectrum if the source emits specific wavelengths of radiation.

This emission occurs when an atom, element or molecule in an excited state returns to a configuration of lower energy.

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How many grams of Ag2S2O3 form
when 125.0 g AgBr reacts completely
according to the reaction below?

2AgBr + Na2S2O3 → Ag2S₂O3 + 2NaBr

Answers

Taking into account the reaction stoichiometry, 109.09 grams of Ag₂S₂O₃ are formed when 125 g AgBr reacts completely.

Reaction stoichiometry

In first place, the balanced reaction is:

2 AgBr + Na₂S₂O₃ → Ag₂S₂O₃ + 2 NaBr

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

AgBr: 2 moles Na₂S₂O₃: 1 moleAg₂S₂O₃: 1 mole NaBr: 2 moles

The molar mass of the compounds is:

AgBr: 187.77 g/moleNa₂S₂O₃: 158 g/moleAg₂S₂O₃: 327.74 g/moleNaBr: 102.9 g/mole

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

AgBr: 2 moles ×187.77 g/mole= 375.54 gramsNa₂S₂O₃: 1 mole ×158 g/mole= 158 gramsAg₂S₂O₃: 1 mole ×327.74 g/mole= 327.74 gramsNaBr: 2 moles ×102.9 g/mole= 205.8 grams

Mass of Ag₂S₂O₃ formed

The following rule of three can be applied: if by reaction stoichiometry 375.54 grams of AgBr form 327.74 grams of Ag₂S₂O₃, 125 grams of AgBr form how much mass of Ag₂S₂O₃?

[tex]mass of Ag_{2} S_{2} O_{3} =\frac{125 grams of AgBrx327.74 grams of Ag_{2} S_{2} O_{3}}{375.54 grams of AgBr}[/tex]

mass of Ag₂S₂O₃= 109.09 grams

Then, 109.09 grams of Ag₂S₂O₃ are formed when 125 g AgBr reacts completely.

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What is the common uses of bases

Answers

To neutralize acids.

Explain light as the condition required for chemical change with few examples.​

Answers

Chemical reactions can be done through: 1. Physical contact 2. Solution of reactants 3. Electricity 4. Heat 5. Light 6. CatalystSunlight is important not only for us but also for plants as welll. As you know photosynthesis is a process in which light energy from the sun is used by the plants to prepare starch from carbon dioxide and water. Example: The sunlight uses the chemical reaction between carbon dioxide and water, which finally ends up in the production of starch (photo means light and synthesis means production). These chemical reactions is used by light are called as photochemical reactions.

When you have added as much solute as can dissolve in solvent the solution is called

Answers

Solubility limit. that's the answer

A 609 ml sample of naoh has a ph of 13.5292. if 594 ml of distilled water was added to the initial naoh solution, what would the new ph of the solution be g

Answers

The new pH of the solution after the addition of water would be 13.22.

Total volume of the solution

V(total) = 609 ml + 594 ml

V(total) = 1203 ml

Concentration of water

C = (594 ml)/(1203 ml)

C = 0.493

pOH = -log(0.493)

pOH = 0.31

New pH of the solution = 13.5292 - 0.31 = 13.22

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What are the environmental impacts of chemical industries using distillation to separate chemical solutions?

Answers

Answer:

The production process often produces offensive odours and may also create by-products that can contaminate air and ground water. Many industrial separation processes have requirements and consequences that influence where they are located.

Explanation:

hope it's helpful to you

2. The table below shows the atomic numbers of elements of the periodic table represented by letters I to Q The letters are not the actual chemical symbols for the elements. Element J Atomic number www I 且 } T H 3 Lithiur K 7 Witrogen 8 Select two elements which belong ta Olygin The same period of the periodic table Jk The same group of the period table. Select the element which: twitt form a divalent andon Reacts murst vigorously with water. 9 N Home 10 (Ink (1mk bºr (Ink 12 May Nashy 13 Aluminian C 14 St Veer​

Answers

Explanation:

cudhdbsieehe eirbruwnee8ebeuw eodjsuww8

Which of these is a mineral?
Folate
Vitamin A
Calcium
Sugar

Answers

Calcium is a mineral.
The answer is C,
Calcium.

what can we use to help us predict the results of reaction when we put metals into competition?

Answers

The activity series of metals as well as the electrode potential of metals can be used to compare the reactivity of metals.

What is used in comparing reactivity of metals?

The reactivity of metals can be compared using their electrode potentials which is a measures of the ability of the metal to donate electrons to another metal.

When comparing the reactivity of metals, the metal with the lesser negative electrode potential will be more reactive than another with a greater negative or positive electrode potential.

Therefore, the activity series of metals as well as the electrode potential of metals can be used to compare the reactivity of metals.

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Given the balanced equation representing a
reaction:
2NO+ O₂ → 2NO₂ + energy
1. The mole ratio of NO to NO₂ is
(1) 1 to 1
(2) 2 to 1
(3) 3 to 2
(4) 5 to 2

Answers

Answer: it would be a 1 to 1 ratio

Explanation: originally it would be 2 to 2 but you have to reduce

First twenty element with electronic configuration​

Answers

Hydrogen (H) 1s1
2 Helium (He) 1s2
3 Lithium (Li) [He] 2s1
4 Beryllium (Be) [He] 2s2
5 Boron (B) [He] 2s2 2p1
6 Carbon (C) [He] 2s2 2p2
7 Nitrogen (N) [He] 2s2 2p3
8 Oxygen (O) [He] 2s2 2p4
9 Fluorine (F) [He] 2s2 2p5
10 Neon (Ne) [He] 2s2 2p6
11 Sodium (Na) [Ne] 3s1
12 Magnesium (Mg) [Ne] 3s2
13 Aluminium (Al) [Ne] 3s2 3p1
14 Silicon (Si) [Ne] 3s2 3p2
15 Phosphorus (P) [Ne] 3s2 3p3
16 Sulphur (S) [Ne] 3s2 3p4
17 Chlorine (Cl) [Ne] 3s2 3p5
18 Argon (Ar) [Ne] 3s2 3p6
19 Potassium (K) [Ar] 4s1
20 calcium (ca) [Ar] 4s2

Question 6 of 10
What happens in a single-replacement reaction?
O A. Two reactants combine to form one product.
OB. One reactant replaces an element in another reactant.
OC. Two reactants exchange elements with each other.
D. One reactant breaks apart to form new compounds.
SUBMIT

Answers

Answer:D

Explanation:

A single-replacement reaction occurs when one element replace another in a single compound.

Answer:

B. One reactant replaces an element in another reactant.

Explanation:

Chemical reactions occur when reactants bond or break apart to form new substances known as the products.

Types of Reactions

There are a few main types of reactions:

SynthesisDecompositionSingle ReplacementDouble Replacement

All of these are different ways chemical reactions can occur.

Synthesis

Synthesis occurs when two different reactants form one product. This would be a match for answer choice A.

An example includes: [tex]C+O_{2}[/tex] → [tex]CO_{2}[/tex]

Decomposition

Decomposition occurs when one reactant breaks down, usually through heat, to form 2 different products, which matches answer choice D.

One example is: NaCl → Na + Cl

Single Replacement

Single replacement occurs when there are 2 reactants, a substance and an element, and the singular elements replaces one of the elements in the substance to form new products. Since this matches answer choice B, this is the correct answer.

For example, K + NaCl → KCl + Na

Double Replacement

Finally, double replacement is when there are 2 reactants and each switches an element with the other. This is seen in answer choice C.

One example includes: [tex]3KNO_{3} +AlCl_{3}[/tex] → [tex]Al(NO_{3})_{3} +3KCl[/tex]

For this example remember that [tex]NO_{3}[/tex] is a polyatomic ion and acts as a singular element.

What is the volume in L of a 0.825 mole sample of Ar at 600 mm Hg and 300 K? Report your answer to the nearest tenth of a L. (Moodle is looking for a number only, no units.)

Answers

The volume is 2.608L

Given the value of n is 0.825 mole , pressure is 600mm = 0.789bar and Temperature = 300K

We need to calculate the volume in L

As we know the values of number of moles , pressure and Temperature is given

So , to calculate the volume we will use the ideal gas law

The equation of state for a fictitious perfect gas is known as the ideal gas law, sometimes known as the generic gas equation. Although it has several restrictions, it is a decent approximation of the behavior of numerous gases under various circumstances.

Ideal gas law formula

PV = nRT

0.789*V = 0.825*8.3143*300

V = 0.825*8.314*300/0.789

V = 2.608*10^3

V = 2.608 L

Hence the Volume is 2.608 L

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What is produced during the replacement reaction of ba(no3)2 and na2so4? 2bana 2no3so4 2nano3 baso4 nano3 baso4 bana2 (no3)2so4

Answers

2NaNO3(aq) + BaSO4 = Ba(NO3)2(aq) + Na2SO4(aq) (s)

Procedures involved:

The cations or anions may transfer positions in this twofold replacement/displacement reaction, which results in AB + CD AD + CB. In such a reaction, water, an insoluble gas, or an insoluble solid must be one of the byproducts (precipitate). The reaction in question has the following molecular equation:

2NaNO3(aq) + BaSO4 = Ba(NO3)2(aq) + Na2SO4(aq) (s)

Double displacement:

When two atoms or groups of atoms swap positions, a double displacement reaction occurs, creating new compounds. Typically, aqueous solutions are where it happens.

Na2SO4 + BaCl2 BaSO4 + 2NaCl is an example of a double displacement reaction.

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If you added the same amount of sugar to the same amount of water and boiled it, what would the boiling point be?

Answers

Answer:

Adding sugar to water will raise the boiling point and decrease the freezing point of water.

Explanation:

Hope this helps!

If same amount of sugar  added  to the same amount of water and boiled it then boiling point increases.

When sugar added to water it become solution.

Example: If water boils at 100°C then solution with 80%  sugar in 20% of water boils at 112°C.

Why boiling point of solution of sugar and water is higher then boiling point of water?

Since, sugar is non-volatile solute. So, when we boil the solution of sugar in water then water boils easily in low temperature but more  high temperature is required to boil sugar.

What is non-volatile solute?

The solute which has higher vapor pressure as compare to solution in which it dissolve is called non-volatile solute.

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Why some plants like a citrus plants bear thorn ? Describe the subatomic structure of the nucleus, including the structure of each nucleon. Draw a picture. Describe the forces that hold the nucleus together and draw them on your diagram. Explain how beta emission works. What's a common mistake that young people in relationships make?A. They use shortened words, making text messages difficult to understand.B. They overshare personal information.C. They share pictures when they should be texting instead.D. They don't exchange their passwords soon enough.(From Digital Technology: Ethics & Literacy) Discuss the role of television in the 1960 presidential election. How does television influence the political scene today?. Identify the law, write the equation and calculate the answer to the problem below.An incident light ray strikes water at an angle of 45 degrees. The index of refraction of air is 1.0003, and the index of refraction of water is 1.33. What is the angle of refraction rounded to the nearest whole number? Which expression can be used to an identity with [(sin)(sec)]^2 + 1? ______ is pursuing a failed course of action and is a consequence of mismanaged agreement. How are manures different from fertilizers? List out the impacts of using fertilizers over and over and how can it be prevented. 9)Rover the dog is on a 60-foot leash. One end of the leash is tied to Rover, who is 2 feet tall. Theother end of the leash is tied to the top of an 8-foot pole. How far can Rover roam from thepole? Question 2 of 25What is the term for a pair of forces described by Newton's third law?A.Normal-friction pairB.Action-reaction pairC.Kinetic-static pairD.Inertia-movement pair The nurse is caring for a client who is anxious and is experiencing dyspnea and restlessness from hypoxemia associated with pulmonary edema. Auscultation of the lungs reveals these breath sounds. The nurse determines that these breath sounds are usually caused by which condition? Explain what happens when you have an exponent to the power of another exponent. Which graph represents the function r(x) = |x-2| -1 A store selling school supplies advertises a bundle deal. The consumer canpick a backpack, a binder, a pack of pencils, and notebook paper for a setprice. There are 6 types of backpacks, 4 types of binders, 5 types of pencils,and 2 types of notebook paper. How many outcomes are possible in thisbundle? The measurement of the geographic distribution of species on the planet is referred to as To help Juliet, Friar Laurence:A)told the Capulets that she had already secretly married Romeo.B)sent Romeo a note and told him to meet her at Friar John's house in Mantua.C)gave her a sleeping potion so everyone would think she was dead.D)None of the choices are correct. What did Roger Woodward do in the summer of 1960?He managed to go behind Niagara Falls even though it was very difficult to breath in the space between the cliff wall and water.After a boating accident, he became the first person to survive going over Niagara Falls without protection.During a visit to Niagara Falls, he was "seized with horror" and dropped to his knees in fear.He went to live in a log cabin on Goat Island, which sits in the Niagara River not far from the falls. Based on your knowledge of word parts, which word best completes this sentence?Stephen's excellent performance in his French classes _____ him to try speaking only in French during his trip to Paris.A.) encasedB.) emboldenedC.) ensnaredD.) encroached Which linear function has the steepest slope? Can you please provide us with more details?