What do we call a rearrangement of atoms of substances resulting in new substances?

When blood is donated, sodium oxalate solution is used to precipitate Ca2+, which triggers clotting. A 122.0-mL sample of blood contains 9.70 * 10-5 g Ca2+/mL. A technologist treats the sample with 100.0 mL of 0.1550 M Na2C2O4.

How many kmin (kilominutes) are there in 44 weeks and 5 days? Report the answer to 4 significant figures.

If a 1.00M aqueous NaCl solution has a density of 1.01g/mL, what is the concentration in mass percent? 5.79% 58.44% 1.00% 99.0%

How me and other scientists know about animals that went extinct for million people million of years ago

What type of change results in the formation of a new substance?

What set of techniques can be used for separating mixtures? a. condensation, dialysis c. electroporation, transformation b. grinding, boiling d. synthesis, reflux

How do you make good grades?

Magnesium (24.48g) reacts with hydrochloric acid (xg) to produce hydrogen gas (2.04g) and magnesium chloride (96.90g). How much hydrogen chloride was used in the reaction?

What is it important for scientists to be able to remove DNA from an organism

How did scientists discover that Earth's outer core is liquid?