How does a balanced chemical equation show that mass is never lost or gained in a chemical reaction

Why water would flow back into shrunken cells

What is the diffrence between speed and avarege speed

What's the goal of science

A student wants to investigate abiotic factors that affect tomato plants. He obtains four identical tomato plants. Which of the following investigations might he perform? A.

A 100.5 ml intraveneous (iv) solution contains 5.10 g glucose (c6h12o6). what is the molarity of this solution?

What do igneous rocks form from? (20pts!)

A gas at STP has a volume of 1.0 liter. If the pressure is doubled and the temperature remains constant, the new volume of the gas will be ... ?

Combustion analysis of toluene, a common organic solvent, gives 8.20 mg of co2 and 1.92 mg of h2o. if the compound contains only carbon and hydrogen, what is its empirical formula?

Why does the moon have phases? What are the four main phases of the moon? How long does it take to change from one to another?

How many atoms are in 1/2 mole of calcium