Convert 15.4 g to kg: Liquid ethane boils at -89 degree C. What is its boiling p

Question

Convert 15.4 g to kg: Liquid ethane boils at -89 degree C. What is its boiling point on the Kelvin scale? What is the mass of H_2 SO_4 in 50.0 cm^3 sample of sulfuric acid which has a density of 1.55 g/cm^3 and which consists of 65.0% H_2 SO_4? How many significant in the answer? How many protons, neutrons and electrons are in one atom of The atomic mass of Ga is 69.72. There are only two naturally occurring isotopes of gallium. 69 Ga and 71 Ga. The natural abundance of the 69 Ga isotope must be a. 30% b. 40% c. 50% d. 60% e. 70%

Explanation / Answer

1. 1 kg = 1000g

1g = 1/1000 kg

15.4g =15.4/1000 = 0.0154kg

2 T = -89°C

= -89 + 273K = 184K

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