The products obtained by cracking an alkane, X, are methane, ethene and propene. The mole fraction of ethene in the products is 0.5. What is the identity of X?. A C6H14. B C8H18. C C9H20. D C11H24.

When 280. mL of 1.50 * 10⁻⁴ M hydrochloric acid is added to 135 mL of 1.75 * 10⁻⁴ M Mg (OH) ₂, the resulting solution will be? a) acidic b) basic c) neutral d) it is impossible to tell from the information given.

A real gas behaves least like an ideal gas under the conditions of (1) low temperature and low pressure (2) low temperature and high pressure (3) high temperature and low pressure (4) high temperature and high pressure

What must pyruvic acid be converted to before it can enter the citric acid cycle? a. acetyl CoA b. lactic acid c. ethyl alcohol d. NADH

If the volume of a gas is cut in half without changing the temperature what happens to the pressure? a) pressure decreases by half b) pressure increases four fold c) pressure remains the same d) pressure is squared e) pressure doubles

Why evaporation always occurs at the surface?

What is the best name for the molecule below? a compound with 10 total carbons with a double bond and the rest single bonds.

What Word means the gradual change and build up of organisms in an enviroment

If you see the Sun is high in the sky, what can you say about the SUN as viewed from the opposite side of Earth at the same moment?

What element has 8 valence electrons

Which of the following best describes a metal? Brittle, shiny, and solid Brittle, dull, and low density Malleable, shiny, and able to conduct heat or electricity Malleable, dull, and solid, liquid, or gas at room temperature?