How many moles are in 23.5 g of magnesium

The empirical formula of a compound is NO2. Its molecular mass is 9.2g/mol. What is its molecular formula?

Explain why the density of a solution increases as the concentration increases.

How many grams of MgCO3 are required to neutralize 200. mL of stomach acid HCl, which is equivalent to 0.0465 MHCl?

Use the drop-down menus to identify the effect of each mutation. A mutation that causes a human to have eleven toes is. A mutation that causes a desert snake to have sand-colored scales is.

Can the smallest particles which are atoms still be divided?

Equal masses (in grams) of hydrogen gas and oxygen gas are reacted to form water. Which substance is limiting? a. Oxygen gas is limiting b. Hydrogen gas is limiting. c. Water is limiting. d. Nothing is limiting. e.

Many things can cause an organism to become extinct. Here are some possible causes of extinction. Select the human causes of extinction.

Which word equation shows lithium oxide being formed from the reaction between oxygen and lithium? oxygen + lithium oxide Right arrow. Lithium lithium + oxygen Right arrow. Lithium oxide oxygen + lithium Right arrow.

What happens to the speed of light when waves travel through a denser medium

A 1.79-L flask is filled with propane gas (C3H8), at 1.00 atm and - 16.1°C. What is the mass of the propane in the flask?