Answer:
CH
Explanation:
92.26% = 92.26 g
7.74% = 7.74 g
carbon is 92.26 x 1 mole/12.011 = 7.68
hydrogen is 7.74 x 1 mole/1.008 = 7.68
carbon 7.68 ÷ hydrogen 7.68 = 1
so 1 is your subscript for both carbon and hydrogen
Answer:
0.50 g/mL
Explanation:
Formula of Density,
D = mass / volume
Mass = 12.2 g
Volume = 54.4 mL - 30.0 mL = 24.4 mL
Putting values,
D = 12.2 g / 24.4 mL
D = 0.50 g/mL
Answer: It would take 300 light years to reach Earth.
Explanation: