Vitamin A is a very large organic molecule composed of twenty atoms

of carbon, one atom of oxygen and thirty atoms of hydrogen. How

many atoms total are in TWO molecules of vitamin A.

Select one:

84

68

34

102

Solid lithium metal and diatomic nitrogen gas react spontaneously. give the balanced chemical equation (including phases) that describes this reaction.

a gas sample occupies a volume of 140 mL at a temperature of 296 K and a pressure of 98.2kPa. how many moles of gas are there? show work.

What can occur if more rainfalls or snow melts than a ground can absorb or streams and ponds can hold?

I am a metal, a transition metal, have the smallest atomic radius in my group, and I have 6 valence electrons. What element am i?

You transfer a sample of a gas at 17°C from a volume of 5.67 L and 1.10 atm to a container at 37°C that has a pressure of 1.10 atm. What is the new volume of the gas?

When a solution is considered to have a high concentration of hydrogen ions (H+) is also considered to be? a) acidic b) basic c) neutral d) hot

Why does the sky change colors at sunset? 1 because the sun changes colors 2 because the atmosphere reflects colors 3 because long wavelengths are scattered the least 4 because short wavelengths are scattered the least

Consider the reaction N2 (g) + 3 H2 (g) 2 NH3 (g), which is exothermic as written. What would be the effect on the equilibrium position of adding N2 (g) ?

According to Table I, which equation represents a change resulting in the greatest quantity of energy released? 1. 2C (s) + 2H2 (g) - > C2H4 (g) 2. 2C (s) + 3H2 (g) - > C2H6 (g) 3. N2 (g) + 3H2 (g) - >2NH3 (g) 4. N2 (g) + O2 (g) - > 2NO (g)

Calculate the number of liters in 3.25 g of ammonia