Chemistry, 20.01.2020 18:31 azaz1819

Determine the number of moles of oxygen atoms in each of the following: 4.49 mol h2o2, 2.17 mol n2o , 2.33×10−2 mol h2co3, 24.3 mol co2

Answers: 2

Show answers

Answers

Answer from: briiannamb

Answer :

(1) The 4.49 mol H_2O_2 contains 8.98 moles of oxygen atoms.

(2) The 2.17 mol N_2O contains 2.17 moles of oxygen atoms.

(3) The $2.33\times 10^{-2}$ mol H_2CO_3 contains 0.0699 moles of oxygen atoms.

(4) The 24.3 mol CO_2 contains 48.6 moles of oxygen atoms.

Explanation :

To determine the number of moles of oxygen atoms in each of the following compound:

(1) 4.49 mol H_2O_2

In this compound, there are 2 atoms of hydrogen and 2 atoms of oxygen.

As, 1 mole of H_2O_2 contains 2 moles of oxygen atoms

So, 4.49 moles of H_2O_2 contains $\frac{4.49}{1}\times 2=8.98$ moles of oxygen atoms

Thus, the 4.49 mol H_2O_2 contains 8.98 moles of oxygen atoms.

(2) 2.17 mol N_2O

In this compound, there are 2 atoms of nitrogen and 1 atom of oxygen.

As, 1 mole of N_2O contains 1 mole of oxygen atoms

So, 2.17 moles of N_2O contains 2.17 moles of oxygen atoms

Thus, the 2.17 mol N_2O contains 2.17 moles of oxygen atoms.

(3) $2.33\times 10^{-2}$ mol H_2CO_3

In this compound, there are 2 atoms of hydrogen, 1 atom of carbon and 3 atoms of oxygen.

As, 1 mole of H_2CO_3 contains 3 moles of oxygen atoms

So, $2.33\times 10^{-2}$ moles of H_2CO_3 contains $\frac{2.33\times 10^{-2}}{1}\times 3=0.0699$ moles of oxygen atoms

Thus, the $2.33\times 10^{-2}$ mol H_2CO_3 contains 0.0699 moles of oxygen atoms.

(4) 24.3 mol CO_2

In this compound, there are 1 atom of carbon and 2 atom of oxygen.

As, 1 mole of CO_2 contains 2 mole of oxygen atoms

So, 24.3 moles of CO_2 contains $\frac{24.3}{1}\times 2=48.6$ moles of oxygen atoms

Thus, the 24.3 mol CO_2 contains 48.6 moles of oxygen atoms.

Answer from: Quest

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

Answer from: Quest

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )

Another question on Chemistry

Chemistry, 22.06.2019 14:30

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize

Answers: 3

Answer

Chemistry, 22.06.2019 17:00

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another? the volume and the shape stay the same. the volume increases to fill the new container, but the shape stays the same. the volume stays the same, but the shape changes to fit the new container. the volume and the shape change to fill the new container.

Answers: 2

Answer

Chemistry, 22.06.2019 22:30

What is a number added in front of a formula in order to balance the equation

Answers: 1

Answer

Chemistry, 23.06.2019 01:00

The time that is taken by neptune once around the sun is called

Answers: 1

Answer

You know the right answer?

Determine the number of moles of oxygen atoms in each of the following: 4.49 mol h2o2, 2.17 mol n2o...