4. What is the ratio of the mass to the number of

moles of a compound?

Why do we have 2 high tides and 2 low tides a day?

An accelerating car is always gaining speed T or F

a race car is driven by professional driver at 99 miles. what is this speed in hours kilometers hours and kilometers minute

The pressure on 40ml of a gas is increased from 760mm to 800mm. find the new volumes at the same temperature.

Which of these elements exist as a liquid at normal Earth temperatures? Select all that apply. bromine sodium oxygen mercury

Describe your observations of the original solutions. Describe your observations when the silver nitrate was added to the sodium chloride solution.

A gas occupies 18.5L at stp. what volume will it occupy at 735 torr and 57°c?

When two elements form two different compounds, the masses of element B that combine with 1 g of element A can be expressed as a ratio of small whole numbers.

Which best identifies why the rusting of an iron nail in the presence of water and oxygen is in oxidation-reduction reaction

In the laboratory hydrogen gas is usually made by the following reaction:Zn (s) + 2HCl (aq) = H2 (g) + ZnCl2 (aq) How many liters of H2 gas, collected over water at an atmospheric pressure of 752 mmHg and a temperture of 21 Co, can made from 3.