What does the statement "Mass is conserved during a chemical reaction" mean?

How many moles of chloride ions are present in a 150.0 mL solution of CaCl2 that has a concentration of 0.340 M?

What is the molarity of the diluted solution when each of the following solutions is diluted to the given final volume? (a) 1.00 L of a 0.250-M solution of Fe (NO3) 3 is diluted to a final volume of 2.00 L (b) 0.5000 L of a 0.

How many moles of phosphate ions are present in 1.85 moles of Cu3 (PO4) 2?

Why doesn't the earth, s shadow get cast onto the moon every month?

What are two examples of an endothermic reaction and what are two examples of an ectothermic reaction?

Around 1910, Rutherford bombarded gold foil with alpha particles. Most of the alpha particles passed straight through. To his surprise, a smaller number were deflected by 180°. This summary recounts the scientific discovery of A.

What is the density? Mass = 120 g Volume = 96 mL

A spoonful of salt is stirred into a pot of water. The salt is a

What are some catchy projects titles for the question, "What liquids cause the most tooth decay?"

Show that the speed of an electron in the nth bohr orbit of hydrogen is αc/n, where α is the fine structure constant. what would be the speed in a hydrogen-like atom with a nuclear charge of ze?