Pure aluminum metal has a density of 2.70 g/cm

How much do 7.83 * 10^22 molecules of water weigh? Answer in units of g.

The reaction N2 + H2 - -> NH3, if 2.00 grams of hydrogen reacts: how many grams of ammonia are produced? How many grams of nitrogen react?

What is true about the valence shell of the noble gasses?

Identify the reactants and the products in the following chemical equation. Cd (NO^3) ^2 + (aq) + H^2S (g) - - >Cds (s) + 2HNO^3 (aq)

What are the four phases of matter?

A scientist has a new cough medicine by giving it to a group of course the scientist gives another group called the liquid and tells them cough medicine the people and goods are women between the ages of 20 and 30 you never a are in good health

What is 350 kelvins on the celsius scale of temperature

Why chemical origin of life is part of evolutionary history of the earth? Any proof of this? How is it possible that origin of the life is based on inorganic matter?

How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal Ca+2HCl - - > CaCl2 + H2

Carlos has some soil that has too much sand mixed in for growing plants. What should he add to improve the soil for growing plants? A) bugs B) clay C) pebbles D) twigs