Convert 8.00 x 1020 molecules of H2 to moles.

Answers

Answer 1

Answer:

1.33 x 10^-3 mol H2

Explanation:

? mol H2 = 8.00 x 1020^20 molecules H2 x  1 mol H2/6.02 ! 1023 molecules H2 = 1.33 x 10^-3 mol H2

Hope that helps!

Answer 2

8.00 x 10²⁰ molecules of H₂ present in 1.33 x 10⁻³ mole of H₂.

What is mole?

Mole is used to define the amount of quantity of any substance and 1 mole equals to the 6.023 × 10²³ elementary entities or atoms in it.

According to the question:

1 mole of H₂ = 6.023 × 10²³ molecules of H₂

or 1 molecules of H₂ = 1 mole of H₂ / 6.023 × 10²³ molecules of H₂

To convert 8.00 x 10²⁰ molecules into mole we calculate as follow:

x mole of H₂ = (8.00 x 10²⁰ molecules x  1 mole of H₂) / 6.023 × 10²³ molecules

x mole = 1.33 x 10⁻³ mole

Hence, 1.33 x 10⁻³ mole of H₂ consist 8.00 x 10²⁰ molecules.

To know more about moles, visit the below link:

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Related Questions

Help ASAP I will mark brainliest to he correct answer

Answers

Answer:

513.3 km/h

Explanation:

ASAP PLEASE!!!!!!!! Organic chem

Answers

Answer:

a. more mosquitos more malaria

b. DDT worked to keep malaria numbers down by killing mosquitos

c. silent spring's great PR campaign got it banned and with the help of the EPA it was banned almost worldwide and if it was not banned manufacturing it stopped

d. it will continue to increase and 100s of millions of dead will be stacked even higher from malaria

Explanation: it is a tragedy, not sure if that is what you were given to read but that is the side that is rarely told

the birds all dying was not correct, it is not a cartcinogen, it doesn't poison the ocean

here is an interesting quote that is rather telling about how some with power make their decisions

My own doubts came when DDT was introduced for civilian use. In Guyana, within two years it had almost eliminated malaria, but at the same time the birth rate had doubled. So my chief quarrel with DDT in hindsight is that it has greatly added to the population problem.

– Alexander King, cofounder of the Club of Rome, 1990

Absolutely horrific, he is saying that the problem with DDT is that it saved lives

PLEASE HELP!!!What are the factors of climate change

Answers

Answer:

According to The genic variations in atmospheric compositions and proper use of land or the other factors the cahs climate change

(M1)(M2)+(M2)(P2)=(12.000000)(.9890)+(13.003354)(.1100)=amu

Answers

Answer:

The answer would most likely be 4.0004

Explanation:

What is thought to cause the Earth's magnetic field

Answers

Answer:

It is caused by currents of electricity that flow in the molten core.

Looking at the Periodic Table, how can you determine if an element is a metal, metalloid or nonmetal?

Answers

Answer:

It depends on where it's located on the periodic table.

Explanation:

Metals are on left side of the periodic table except Hydrogen (H), which is a nonmetal, then there's the staircase, which has the metalloids, and on the right of the staircase are the nonmetals.


1. What is the volume
occupied by 20.4 liters of
CO2 at 1200 Torr when it is
at STP

Answers

Answer:

Explanation:

From your question you’ll have to assumethat the temperature is constant,since you do not have an initial temperature.

If thats the case thrn you can use;

P1V1=P2V2 to calculate the second volume.

P1=1200 torr

P2=760 torr

V1 = 20.4L

The volume occupied by 20.4 liters of Carbon dioxide (CO₂) at 1200 Torr when it is at Standard temperature pressure is 32.21 L.

How we calculate the volume?

Volume of gas can be calculated by arranging the ideal gas equation as:

P₁V₁ = P₂V₂, where

P₁ = given pressure = 1200 Torr

V₁ = given volume = 20.4 L

P₂ = standard pressure = 760 Torr

V₂ = to find?
Here, we consider the moles and temperature of gas is constant, on putting all these value on the above equation we get:

V₂ = (1200 × 20.4) / 760 = 32.21 L

Hence, 32.21 L is the required volume.

To know more about ideal gas equation, visit the below link:

https://brainly.com/question/20348074

A medallion was dropped into 20.0 mL of water. The water level rose to 25.3 mL. What is the volume of the medallion? (Vobj = Vf - Vi)

Answers

Answer:

5.3 mL

Explanation:

We solve this problem using Archimede's principle, which states that the volume displaced by a submerged object is equal to the volume of the object.

With that in mind we calculate the volume of water displaced by the medallion:

25.3 mL - 20.0 mL = 5.3 mL

As the medallion displaced 5.3 mL of water when submerged, the volume of the medallion is also 5.3 mL.

help me with this question please !

Answers

Answer:

its C

Explanation:

Wind turbines work on a simple principle: instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity.

Answer: I wanna say B

Explanation:

It makes the most scenes out of all of those answers let me know if im right:)

10
10
40
32
O
O
20
10
10
O
20
20
305
2 read the thermometer and fill in the temperature in Celsius and feharient


Answers

Answer:

10-10 above the 0 is positive and the ones below is - (negitive)

Explanation:

In two or more complete sentences describe the relationship between traits, genes, chromosomes and DNA?

Answers

Answer:

Chromosomes threads of DNA that make up a twisty, coiled shape. DNA strands carry genes, and traits are influenced by the genes that people get from their biological parents.

Explanation:

I got this from goggle ...

In two or more complete sentences describe the relationship between traits, genes, chromosomes and DNA.

Chromosomes threads of DNA that make up a twisty, coiled shape. DNA strands carry genes, and traits are influenced by the genes that people get from their biological parents.

A sample of xenon gas occupying 10.0 mL is collected in a laboratory at 27°C and 1.25 atm. What is the volume of the gas at standard conditions?​

Answers

11.8 ml is the volume

Write about an object's motion in your own words.

Answers

Answer:

An objects motion is called kinetic energy.  Which is energy that is cause by movement or motion

Explanation:

Answer:

An object at rest has zero velocity - and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force. An object in motion with a velocity of 2 m/s, East will (in the absence of an unbalanced force) remain in motion with a velocity of 2 m/s, East. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force. Objects resist changes in their velocity

Explanation:

an object that is not changing its velocity is said to have an acceleration of 0 m/s/s. Thus, we could provide an alternative means of defining inertia

Calculate the number of moles of nitrogen dioxide, that contain 4.0*1023 nitrogen dioxide molecule.

Answers

Answer:

0.66 mol NO₂

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

4.0 × 10²³ molecules NO₂ (Nitrogen dioxide)

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Set up:                                [tex]\displaystyle 4.0 \cdot 10^{23} \ molecules \ NO_2(\frac{1 \ mol \ NO_2}{6.022 \cdot 10^{23} \ molecules \ NO_2})[/tex]Multiply/Divide:                                                                                                   [tex]\displaystyle 0.664321 \ mol \ NO_2[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

0.664321 mol NO₂ ≈ 0.66 mol NO₂

How far does a car travel if its traveling 15 m/s for 28 seconds.

Answers

Multiply 15 x 28 to get 420 meters.

If you want to think logically- u have meters divided by seconds. Your final answer must be meters so to get the seconds to cancel - multiply by seconds ( multiplying will cancel division and vice versa)

Most females have one X and one Y (XY) sex chromosome.
true or false

Answers

Answer:

falseeee a female has two X's and the male has XY

Explanation:

learned this in biology last year

Given the reaction: 2 H2 + O2 => O2 = 2 H2O.
What is the total mass of water formed when 497.80 g of oxygen reacts with hydrogen?

Answers

Mol of oxygen = mass / Mr = 15.556
1:2 mol ratio so multiple by 2
= 31.1125 mol of water
Mass = mol x Mr
= 31.1125 x 18 = 560.025g

what are the group of magnesium and nitrogen ? write the balanced chemical equation for the reaction between two element . what type of chemical reaction is it .​

Answers

Explanation:

Magnesium - Group 2

Nitrogen - Group 5

The balanced equation for the reaction is given as;

3Mg + N₂ --> Mg₃N₂

Type of reaction;

Synthesis / Direct Combination

A popsicle melts on a table. Select ALL statements that are true. A The particles gained thermal energy and changed from a solid to a liquid B The particles lost thermal energy and changed from a solid to a liquid C A physical change occurred D A new chemical substance was made when it melted

Answers

Answer:

its "a" nd "C" Big Dawg if im wrong im sorry dawg been a min since i took a test like dis

Explanation:

Calculate the pH if the pOH = 7.4
Round your answer to two decimal places.

Answers

i need points

Explanation:

pOH and pH add to 14.

Therefore 14 - pOH will give you the answer.

14 - 7.4 = 6.6

The pH is 6.6

What is the number of moles of 60.7 liters of oxygen molecules?

Answers

Answer:

2.17 moles of gas.

Explanation:

How many grams of H2 will react with 350 g of N2?

Answers

Answer:

10.80

Explanation:

As per the equation, let us calculate the mole ratio. N2+3H2→2NH3. As per the equation one mole of nitrogen  reacts with 1 mol of hydrogen.

In terms of mass. 28.01 g of nitrogen needs 3 mol of hydrogen or 6.048 g of hydrogen.

We can set up the ratio;

28.01 g of

l

N

2

needs  

6.048 g of

l

H

2

1 g of

l

N

2

needs  

6.048

28.01

g  of

l

H

2

50.0 g of

l

N

2

needs  

6.048

×

50.0

28.01

l

g of

l

H

2

=

10.80 g of

l

H

2

NUCLEAR REACTIONS
complete the nuclear reaction...
125
125
53
53
y HeeHn
ODRAG

Answers

The correct option for the following reaction is [tex]\gamma[/tex].

In the given reaction we can easily see that the reaction is already complete as a nuclear equation. There is no need for the product to balance the equation as it is not a chemical reaction where reactants and products interact to form new substances.

In this question we can see that a radioactive isotope of iodine-125 ( [tex]^{125}_{53} I[/tex] ) is decaying to produce another isotope of iodine-125 ( [tex]^{125}_{53}I[/tex] ) this process is called beta decay.

As no new element is required to balance the reaction we can say that the answer to this is [tex]\gamma[/tex] as it doesn't add up anything to the reaction.

Learn more about Beta decay at:

https://brainly.com/question/22624428

#SPJ1

Can somebody help me plz

Answers

Answer:r=1.2 d=2.4

Explanation:

Radius is half the diameter and the diameter is 2.4 m

Answer:

Divide the 2.4 by 3.14

Explanation:

Salinity is another word for

Question 3 options:

saltiness


density


temperature


depth

Answers

Answer:

Saltiness

Explanation:

There is no step-by-step. It h us is what it is.

What is condensation ?

Answers

Answer:

gvapor or gas to liquid

Explanation:

water which collects as droplets on cold surface when humid air is in contact with it

Using the empirical formula, calculate the formula weight of the compound. Use the periodic table to help you.

Type the correct answer in the box. Round your answer to three decimal places.

Answers

Answer:

The formula weight of the compound is

46.069 g/mol.

Explanation:

Determine the molar mass from the empirical formula (C2H6O) by multiplying the molar mass of each element in the compound by the number of atoms of it and adding the resulting masses of the elements:

molar mass of C2H6O = (2 × 12.011 g/mol) + (6 × 1.008 g/mol) + (1 × 15.999 g/mol) = 46.069 g/mol.

pls answer if you do ty so much

Answers

Answer:

c

Explanation:

Yeah I think the answer is C

An example of a change of state is __________. *

liquid filling a glass
paper burning
ice cubes melting

Answers

Changes of state are physical changes in matter. They are reversible changes that do not change matter's chemical makeup or chemical properties. For example, when fog changes to water vapor, it is still water and can change back to liquid water again.please mark brainliest if correct

Answer:

ice cube melting

Explanation:

bcoz it's a chemical change

Plants use evaporative cooling.

Question 4 options:
True
False

Answers

Answer:

true

Explanation:

ever heard of "plant perspiration"?

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