A sample of carbon dioxide (CO2) has a mass of 52.0g. How many oxygen atoms are present?

7.11 x 10²³ atoms of oxygen

Explanation:

Given parameters:

Mass of Carbon dioxide  = 52g

Unknown:

Number of oxygen atoms present = ?

Solution:

To solve this problem, we need to first find the mass of oxygen in the compound.

 Molar mass of CO₂   = 12 + 2(16)  = 44g/mol

 Mass of oxygen  = x 52  = 37.8g

  Number of moles of oxygen  =    =    = 1.18moles

So;

       1 mole of a substance contains  6.02 x 10²³ atoms

1.18 mole of oxygen will contain 1.18 x 6.02 x 10²³ = 7.11 x 10²³ atoms of oxygen

answer: the primary difference between a hypothesis and a theory is that b hypothesis is falsifiable, but a theory has been proven to be correct. theory is an explanation of something that is happening but hypothesis is a guess of something that can happen

explanation:

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101