What causes the huge amount of inward pressure when a star begins to form?

A) heat

B) gravity

C) electromagnetic attraction

D) none of these

For the reaction: n2 (g) + 3h2 (g) ⇔ 2nh3 (g), at a particular temperature, the concentrations of n2, h2 and nh3 are 2.1 x 10-3 m, 3.2 x 10-2 m, and 1.8 x 10-1 m, respectively. calculate a value of k for this reaction

The electron configuration notation for the element with atomic number 11 is

What are the three states in which most matter occurs

According to the law of conservation of matter, which statement about chemical reactions is true? a. every atom destroyed in a chemical reaction must be replaced. b. atoms are created by some reactions and destroyed by others. c.

Write a balanced redox equation for the reaction that occurs cr dissolves in 1 m h2cr2o7.

How does th composition of a mixture of hydrogen and oxygen differ from the composition of a compound containing hydrogen and oxygen?

When 189.6 g of ethylene (C2H4) burns in oxygen to give carbon dioxide and water, how many grams of CO2 are formed? C2H4 (g) + O2 (g) → CO2 (g) + H2O (g) (unbalanced)

Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine B. FeO = iron (|||) oxide C. K↓2O = Phosphorus dioxide D. CuCI↓2 = copper (||) chloride

Which of the following correctly explains the role of enzymes in biochemical reactions? A) Enzymes provide energy in the form of ATP to lower the activation energy needed for the reaction.

How does being a landlord relate to chemistry in any way