Answer:
The molar mass of Ca(OH)2 is 74.092 g/mol
Explanation:
First your going to find the atomic mass of each element on the periodic table.
Ca(Calcium) = 40.078
O(Oxygen) = 15.999
H(Hydrogen) = 1.008
Then we can create the equation:
40.078 + (15.999 + 1.008) × 2
40.078 + (17.007) × 2
40.078 + 34.014
= 74.092 g/mol
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C4H10. The three carbons are in a string, and the hydrogens surround these carbons. It will look similarly in structure to the diagram below.
H H H
| | |
H-C-C-C-H
| | |
H H H
Hope this helps!
Answer:The percent composition by mass of hydrogen in
is 6.32 %.
Explanation:
Molecular mass of the
= 79 g/mol
Mass of the hydrogen atom present in one formula unit of
:
![= 5\times \text{(atomic mass of hydrogen)}=5\times 1 g/mol= 5 g/mol}](https://tex.z-dn.net/?f=%3D%205%5Ctimes%20%5Ctext%7B%28atomic%20mass%20of%20hydrogen%29%7D%3D5%5Ctimes%201%20g%2Fmol%3D%205%20g%2Fmol%7D)
![\text{percentage of hydrogen}=\frac{\text{mass of the hydrogen in}NH_4HCO_3}{\text{molar mass of}NH_4HCO_3}\times 100](https://tex.z-dn.net/?f=%5Ctext%7Bpercentage%20of%20hydrogen%7D%3D%5Cfrac%7B%5Ctext%7Bmass%20of%20the%20hydrogen%20in%7DNH_4HCO_3%7D%7B%5Ctext%7Bmolar%20mass%20of%7DNH_4HCO_3%7D%5Ctimes%20100)
The percent composition by mass of hydrogen in
is 6.32 %.
Answer:
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