What methods do scientists use to determine if a change was physical or chemical?

Why do real gases deviate from the ideal gas laws at low temperatures?

A mixture of uneven distribution and easy separation is: - heterogeneous - a solution - homogeneous - a standard

What quantities are conserved when balancing a chemical reaction?

Digby wants to determine how many calories are in his bag of chips. Which calorimeter should he use? coffee cup calorimeter bomb calorimeter He could use both types of calorimeters. He cannot use either.

What problems might happen if an unnecessary hurricane warning was issues

a solution is approximately 332.0 g of salt per kilogram of solution. Assume this salt is all NaCl. What is the molality of this solution?

What burns fuel to release thermal energy

Scientist call an organism that has two different alleles for a trait

The molar mass of water (H2O) is 18.02 g/mol. Yun needs 0.025 mol H2O for a laboratory experiment. She calculates that she needs 72.0 g H2O for the experiment. Yun's calculation was incorrect because she set up her unit conversion incorrectly.

I'm doing isotope homework and I need the find the number of protons, neutrons, and electrons first one is chromium-58 and chromium-63