Answer:
DP = 16
Step-by-step explanation:
PK = KA = 12
using the Pythagorean theorem:
DP² = 20² - 12²
DP² = 400 - 144 = 256
DP = 16
1- 512
2-27
3-216
4-8
5-729
6-343
Answer:
exact form:37/100 Decimal Form: 0.37
Step-by-step explanation:
This queston is not of Algebra. It is of chemistry.
You have to work with the chemical formula of the compound, the atomic and molar masses and use proportions.
1) PH3:
element atomic mass number of atoms total mass
P 31 g/mol 1 31 g/mol
H 1.0 g/mol 3 3.0 g/mol
------------------
molar mass 34 g/mol
2) proportions
372 g H / x = 3.0 g H / 34 g PH3
=> x = 372g H * 34 g PH3 / 3.0 g H = 4216 g PH3
Answer: 4216 g