Consider the following equilibrium and the table of experimental dаta:

N2O4 (g) Ý 2NO2 (g)

Which of the following represents the Keq value?

A) 0.18

B) 0.0067

C) 0.131

D) 0.0046

Kernels of corn are heated and become popcorn. Why is this a chemical change? A) The size and color of the corn have changed B) The kernels change due to their reaction of heat C) The volume of the kernels expand D) The mass of the kernels increase

What is the specific heat of a material if a 6.0 gram sample absorbs 50.0 joules when heated from 30°C to 50°C?

Which component of the atom has the least mass?

What is the best step for the engineers to make next

Define Oxidation number. Find the Oxidation number of Carbon in CO2

If 0.366 g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as (1) an ionic compound (2) a molecular compound (3) a metal (4) a nonmetal

A conical, flat-bottomed flask with a narrow neck that can be used for heating, mixing, watching reactions, and swirling, not for measuring

Answer 1. the law of conservation of mass states that mass is neither created nor destroyed in an ordinary chemical reaction. when an iron nail rusts, it seems to get heavier in mass. does the iron nail follow the law of conservation of mass?

Ammonia (NH3) burns in air to form nitrogen dioxide and water. Calculate grams of nitrogen dioxide produced if 4.0 grams of ammonia are consumed