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When you add all of the numbers together, it equals 136.41. that divided by 3 = 45.47 which is the average
Answer:
A
Explanation:
CO2 cylinder, 68% full by water capacity, warms up to room temperature (70 oF), the pressure inside the cylinder increases to 837 psi. When the same cylinder reaches 87.9 oF the entire charge becomes a gas no matter what the pressure.
Answer:
%M = 16.2%
%N = 18.9%
%O = 64.9%
Explanation:
Mg(NO3)2
Atomic mass of Magnesium M = 24
Atomic mass of Nitrogen N=14
Atomic mass of Oxygen O=16
Molar mass of Mg(NO3)2 = 24 + (14+[16*3})*2
Mg(NO3)2 = 24 + (14+48)*2
Mg(NO3)2 = 24 + 124
Mg(NO3)2 = 148
Percentage composition;
Magnesium M= (24/148) × 100
Magnesium M=0.162 × 100 =16.2%
Oxygen O=(16*6/148) × 100
Oxygen O= 0.649 × 100 = 64.9%
Nitrogen N= (14*2/148) × 100
Nitrogen N=0.189 × 100=18.9%
