Answer:
the answer is 74.03%
Explanation:
Add all the masses together, M of C = 120.1, M of H = 14.4 and M of N = 28.02. Adding all those together will give you the mass of the compound, then u divide the mass of carbon by the mass of compound and multiply by 100 to get the percent by mass.
120.1 + 14.4 + 28.02 = 162.26
120.1/162.26 x 100 = 74.03%
Answer:
hydrocarbons are compounds which contains Hydrogen and carbon
I mole of water has an Avogadro number of molecules.
1 mole = 6.02 * 10^ 23 molecules.
6.02 * 10^ 23 molecules = 1 mole of water
1 molecule = 1/(6.02 * 10^23) mole of water
2.0 * 10^22 molecules would have = (2*10^22) * 1/(6.02*10^23)
= 0.033
2* 10 ^22 molecules of water would have 0.033 moles of water.
Answer:
The initial E° for the second cell is the same as for the first cell.
Explanation:
Because the overall chemical reaction that occurs in the cell does not change.
Answer:
CuSO4 + 2NaOH → Cu(OH)2 + Na2SO4
Explanation:
