Answer:
<h2>0.8 moles </h2>
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
We have
We have the final answer as
<h3>0.8 moles</h3>
Hope this helps you
protons with a positive charge and neutrons with a neutral charge
<span>PBr5
You started with 0.72 mg of phosphorus and ended up with 10.01 mg of its bromide. So the amount of bromine is 10.01 - 0.72 = 9.29 mg
Now you need to determine the relative number of atoms of each element used.
atomic mass of phosphorus = 30.973762
atomic mass of bromine = 79.904
relative atoms of phosphorus = 0.72 / 30.973762 = 0.023245
relative atoms of bromine = 9.29 / 79.904 = 0.116265
Now you need to look for a simple ratio of integers that closely approximates 0.023245 / 0.116265. First we'll divide the larger by the smaller.
0.116265 / 0.023245 = 5.001597
Given how close the value comes to 5. The empirical formula will be PBr5. So for every atom of phosphorus, you need 5 atoms of bromine.</span>
This is an incomplete Question.
The complete question is:
Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What volume of carbon dioxide would be produced by this reaction if 2.4 m3 of carbon disulfide were consumed? Also, be sure your answer has a unit symbol, and is rounded to 2 significant digits.
Answer:
Explanation:
The balanced chemical reaction will be:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.
Given volume=
To calculate the moles, we use the equation:
According to stoichiometry:
1 mole of carbon disulfide gives = 1 mol of carbon dioxide
Thus 107 moles of carbon disulfide gives=
Volume of carbon dioxide =
Thus the volume of carbon dioxide produced by this reaction if of carbon disulfide were consumed.