how many moles of sodium will react with water to produce 2.0 mol of hydrogen in the following reaction?
2Na(s) + 2H20(1) - 2NaOH(aq) + H2(g)

Answers

Answer 1

Answer: 4.0 moles of sodium will react with water to produce 2.0 mol of hydrogen

Explanation:

The balanced chemical equation is:

[tex]2Na(s)+2H_2O(l)\rightarrow 2NaOH(aq)+H_2(g)[/tex]  

According to stoichiometry :

1 mole of [tex]H_2[/tex] is produced by = 2 moles of [tex]Na[/tex]

Thus 2.0 moles of [tex]H_2[/tex] are produced by =[tex]\frac{2}{1}\times 2.0=4.0moles[/tex]  of [tex]Na[/tex]

Thus 4.0 moles of sodium will react with water to produce 2.0 mol of hydrogen


Related Questions

W + BgCz2 --> WCz + Bg
Balance this equation

Answers

Answer: W + BgCz2 arrow WCz + Bg

2 W + BgCz2 arrow  2 WCz + Bg

Explanation:

Cz has 2 so you balcne the other side of WCz.

Since you Balcanes the Cz you changed the W and you Balcanes the other W on the left side.

ASAP
The directions "shake well before using" are listed on special types of heterogeneous mixtures called
A- Solutions
B- Suspensions

Answers

I am currently learning this and I would say Suspensions!

Hope this helps :)

6. How is Avogadro’s number used to convert moles into particles?

Answers

Explanation:

Avogadro's number is a very important relationship to remember: 1 mole = 6.022×1023 6.022 × 10 23 atoms, molecules, protons, etc. To convert from moles to atoms, multiply the molar amount by Avogadro's number.

Miscible liquids that have different boiling points can be separated by _______.
A.filtration
B.distillation
C.chromotagraphy
D.evaporation
Please help it's due soon

Answers

i believe it's b) distillation

The development of a nuclear power plant at an ocean site is expected to produce an enormous amount of electric power for a large population. Ocean water will be used to cool the plant and then returned to the ocean. What unintended consequences should be analyzed before starting construction?

Answers

Explanation: The awnser would be The effects of warmed water on aquatic life

Organisms that depend on other organisms for food are consumers. Which consumer think is a herbivore (eats plants only)

Answers

Examples of herbivores are buffalo, elk, some bird species, mice, squirrels, rabbits, and many more.

To solve this, we must know each and every concept behind herbivores and  carnivores. Therefore, herbivores include cows, goats, giraffes, sheep, and zebras etc.

What is herbivores?

Herbivores, often known as herbivorous animals, are creatures that eat plants, leaves, fruits, and other plant-based foods for nourishment. They are classified as primary eaters and are found at levels 2 or above in the food supply chain.

Herbivores include cows, goats, giraffes, sheep, and zebras. Interestingly, there really are herbivores who specialize in eating on specific parts of the plant; for example, frugivores are herbivores that graze on fruits, whereas folivores are herbivore that eat on leaves.

Therefore, herbivores include cows, goats, giraffes, sheep, and zebras etc.

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What is the chemical formula for dintrogen monosulfide?

Answers

Answer:

sulphur mozron tried is an ignore a compound with the formula SN it is the Sulphur and a log of the traditional nitric oxide no sulphur monitor ID names smiles and plus s - properties chemical formula and as molar mass 46.07 gmo l - 1

Mg(OH)2 + 2 HBr à MgBr2 + 2 H2O

Answer the questions below based on the above reaction. Answer with the correct number of significant figures. Show your work! Each question is worth 8 points. 1 point for sig figs, 1 point for correct final unit, 3 points for correct final answer, 2 points for correct molar masses, and 1 point for dimensional analysis table.

1. How many grams of MgBr2 will be produced from 18.3 grams of HBr?

2. How many moles of H2O will be produced from 18.3 grams of HBr?

3. How many grams of Mg(OH)2 are needed to completely react with 18.3 grams of HBr?

Answers

Explanation:

The balanced equation of the reaction is given as;

Mg(OH)2 (s) + 2 HBr (aq) → MgBr2 (aq) + 2 H2O (l)

1. How many grams of MgBr2 will be produced from 18.3 grams of HBr?

From the reaction;

2 mol of HBr produces 1 mol of  MgBr2

Converting to masses using;

Mass = Number of moles * Molar mass

Molar mass of HBr = 80.91 g/mol

Molar mass of MgBr2 = 184.113 g/mol

This means;

(2 * 80.91 = 161.82g) of HBr produces (1 * 184.113 = 184.113g) MgBr2

18.3g would produce x

161.82 = 184.113

18.3 = x

x = (184.113 * 18.3 ) / 161.82 = 20.8 g

2. How many moles of H2O will be produced from 18.3 grams of HBr?

Converting the mass to mol;

Number of moles = Mass / Molar mass = 18.3 / 80.91 = 0.226 mol

From the reaction;

2 mol of HBr produces 2 mol of H2O

0.226 mol would produce x

2 =2

0.226 = x

x = 0.226 * 2 / 2 = 0.226 mol

3. How many grams of Mg(OH)2 are needed to completely react with 18.3 grams of HBr?

From the reaction;

2 mol of HBr reacts with 1 mol of Mg(OH)2

18.3g of HBr =  0.226 mol

2 = 1

0.226 = x

x = 0.226 * 1 /2

x = 0.113 mol

Human body cells are made by doing what ? ​

Answers

Answer:

When cells become damaged or die the body makes new cells to replace them. This process is called cell division. One cell doubles by dividing into two. Two cells become four and so on.

Explanation:

Find the molar mass of CaCO3

Answers

Answer:

molar mass of caco3 is

100.0869 g/ mol

Explain why an organism dies if the respiratory and circulatory system 'paused' for a while.

Answers

Answer:

Without the respiratory system your blood would be useless. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body

Explanation:

Number 1 plsssssssssssssssssssssssss

Answers

C hope that helps have a good one

Diamonds are one of the hardest materials known. Hardness is how resistant a material
is to being scratched by another material. If two samples of metal that appear identical
are scratched by a diamond, is that sufficient to determine that they are the same metal?
Why or why not?

Answers

No that would not be sufficient information One because they only used one Diamond while they used two metal meaning that could just be a strong Diamond.

Important question, please answer(worth 64 points.)

Balance this equation



___C8H18 + ____O2 ⇒ ___CO2 + ___H2O

Answers

Answer:

Is is talking about h20 water?

Explanation:

Answer:

2C8H18 + 25O2 ----> 16CO2 + 18H2O

Explanation:

Basically you can first list all your elements from your products and reactants:

C       8 x 2                         C             1 x 16

H      18 x 2                        H             2 x 18

O       2 x 25                      O             (2 x 18) + (2 x 16)

The chemical analysis of a compound gave the percentage composition by mass: Carbon 40%, Hydrogen 6.67% and Oxygen 53.3%. The relative formula mass of a compound is 180. What is the molecular formula of this compound? ​

Answers

Answer:

C6H12O6

Explanation:

I attached the method for solving above.

A sample of gas has an initial volume of 15 L and an initial pressure of 4.5 atm. If the pressure changes to 1.8 atm, what is the new volume, assuming that the temperature remains constant?

Answers

Answer:

37.5 L

Explanation:

Initial Volume, V1 = 15L

Initial Pressure P1 = 4.5 atm

Final Pressure, P2 = 1.8 atm

Final Volume V2 = ?

The relationship between these variables is given as;

P1V1 = P2V2

V2 = PIV1 / P1

Inserting the values;

V2 = 4.5 * 15 / 1.8

V2 = 37.5 L

Answer: The new volume is 37.5L

Explanation:

The question is solved using the principle and formula of a gas law known as the Boyle's law. Boyle's law states that provided the temperature remains constant, the volume of a given mass of gas is inversely proportional to its pressure. Expressing the statement mathematically:

P ∝ 1/V, (where p is equal to pressure and V is volume)

Therefore PV = a constant

If a gas at pressure P1 and Volume V1 changes at constant temperature to pressure P2 and volume V2 then:

P1V1 = P2V2.

Using the formula to solve the question:

P1 = 4.5atm

P2 = 1.8atm

V1= 15L

V2 = ?

V2 = P1V1/P2

V2= 4.5 × 15 /1.8

V2 = 67.5/1.8

V2 = 37.5 L

Therefore the new volume is 37.5L

Hey bedoorrr
Cheetosss

Answers

Answer:

this is really insightful, thank you

Explanation:

yessirrr soda nahh water nahhh Jumanji

What is the concentration of a solution of HBr if 0.40 L is neutralized by 0.20 L of 0.50M solution of LiOH?

Answers

Since the mole ratio is 1 to 1 for this reaction, you can just use M1V1 = M2V2 to solve, given that 1 refers to HBr and 2 refers to LiOH.

M1 = ?
V1 = 0.40 L
M2 = 0.50 M
V2 = 0.20 L

M1(0.40) = (0.50)(0.20)

Solve for M1 —> M1 = (0.50)(0.20)/0.40 = 0.25 M HBr

Please help me!! :DDDDD

Answers

Answer:

i think b

Explanation:

the answer is B! the lungs inhales oxygen and gets rid of carbon dioxide

What is ∆G system for the system that is described by the following data?
∆H system= -232 kJ, T= 293 K, ∆S system= 195 J/K
∆G system= ∆H system - T∆S system

a. -289 kJ
b. -175 kJ
c. 256 kJ
d. 56,903 kJ

Answers

Answer:

it is a

watch for kJ vs J as the enthalpy is in kJ and entropy is in J

Explanation:

What happens to the sugar that plants make during photosynthesis?

F
It is recycled in the soil and through the roots so other consumers
can grow
It is released by the stoma in the leaves and made available to
other consumers
It is used for growth and maintenance of the plant and a small
amount is available to feed consumers.
None of the above

Answers

Answer:

glucose

Explanation:

plants use sunlight water and the gases in the air to make glucose which is aform of sugar

Describe the radial velocity curve. What is its shape? What is its amplitude? What is the orbital period?

Answers

Answer:

The radial velocity curve describes how fast a star is moving in its orbit around a center of mass ( m )

Curve amplitude : This is the maximum value of the radial velocity curve

Radial velocity shape ; The shape of Radial velocity curve is parabolic in nature

Orbital period : Orbital period is the time taken by the star  to make one complete rotation in its orbit

Explanation:

The radial velocity curve describes how fast a star is moving in its orbit around a center of mass ( m ) while Curve amplitude  is the maximum value of the radial velocity curve also The shape of Radial velocity curve is parabolic in nature. and  Orbital period is the time taken by the star  to make one complete rotation in its orbit

Complete the following table based on known properties of ionic and covalent compounds.

Answers

Answer:

structure of KF - ionic

Explanation:

At what point is a base no longer added during a titration?

A. when the pH increases suddenly in the flask

B. when the phenolphthalein remains clear in the flask

C. before the solution in the flask reaches the equivalency point

D. before half of the base is completely drained from the burette​

Answers

Answer:

when the pH increases suddenly in the flask

Explanation:

I think it's right. :)

When the pH increases suddenly in the flask at that point is a base no longer added during a titration.

What is titration?

Titration is a typical quantitative chemical analysis procedure used in laboratories to quantify the concentration of a specified analyte. The titrant or titrator is a reagent that is produced as a standard solution with a known concentration as well as volume.

What is pH?

The pH scale, which originally stood for "potential of hydrogen," is used to describe the acidity as well as basicity of aqueous solutions. The pH of acidic solutions is lower than that of basic as well as alkaline solutions.

To know more about pH and titration.

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Which of these results in kinetic energy of an object? position mchotion​

Answers

Answer:

..... yep

Explanation:

tep no yep no hyshshshss

motion results in the kinetic energy of an object

What is the net ionic equation for the reaction below?
2H+ + CO32– + 2Na+ + 2OH– 2Na+ + CO32– + 2H2O

Answers

Answer:

The given reaction in your problem is the ionic equation for an acid (carbonic acid) reacting with a base (sodium hydroxide). All components of the reaction are then written in ionic form except for reactant weak electrolytes and the driving force product compound of the reaction (H2O). See following explanation.

Explanation:

Metathesis Rxn: molecular equation of rxn      

H₂CO₃(aq) + 2NaOH(aq) => Na₂CO₃(aq) + 2H₂O(l)

Ionic Equation: shows all components of the reaction

H₂CO₃(aq) + 2Na⁺(aq) + 2OH⁻(aq) => 2Na⁺(aq) + CO₃²⁻(aq) + 2H₂O(l)

H₂CO₃(aq)  wk. electrolyte and H₂O(l) driving force compound are not shown ionized in ionic equation. Only strong electrolytes that ionize 100%; i.e., salts and strong acids and bases.

Net Ionic Equation: shows only the reactive components without the spectator ions (nonreactive components), in this case, the Na⁺(aq) ions.

H₂CO₃(aq) + 2OH⁻(aq) =>  CO₃²⁻(aq)  + 2H₂O(l)

How is the periodic table organised?

Answers

The periodic table brings order to information about the chemical elements. The chemical elements are arranged in order of increasing atomic number. The horizontal rows are called periods and the vertical columns are called groups. Elements in the same group have similar chemical properties.

Periodic table is organized on atomic number left to right and rows are periods columns are groups hope it helps

What type of ion is responsible for activating the vesicles in the axon terminal
а
ОО
Magnesium
Rubidium
b
С
Calcium
d
8
Phosphorus
Fluorine
е

Answers

Answer:

Calcium ions

Explanation:

Calcium ions entering the cell initiate a signaling cascade that causes small membrane-bound vesicles, called synaptic vesicles, containing neurotransmitter molecules to fuse with the presynaptic membrane.

How much water is needed to prepare a .50 molal solution using 0.50 moles of sodium chloride??

Answers

The amount of water needed to prepare a 0.50 molal solution using 0.50 moles of sodium chloride is 1L.

How to calculate volume?

The volume of a solution can be calculated using the following formula:

Volume = no of moles ÷ molarity

According to this question, 0.50 molal solution is used to prepare 0.50 moles of sodium chloride. The volume of the solution is calculated as follows:

Volume = 0.50 moles ÷ 0.5M

Volume = 1L

Therefore, the amount of water needed to prepare a 0.50 molal solution using 0.50 moles of sodium chloride is 1L.

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Please help Me I really need it

Answers

Can you show the question that goes with those answer pls
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