What is another name for taxonomy

My grandmother left me some silver years ago. I opened the box containing the silver and it had tarnished.

How much heat is absorbed during production of 112 g of NO by the combination of nitrogen and oxygen? N2 (g) + O2 (g) →2NO (g), ΔH = + 43.0 kcal

Which quantity or quantities must always be the same on both sides of a chemical equation? check all that apply. check all that apply.

If Hershey and Chase had used radioactive oxygen in their experiments instead of phosphorus and sulfur, what results would they have likely obtained? a. They would have observed a radioactive signal in both the pellet and the liquid. b.

Salt crystals look like tiny cubes. Salt is part of the ___ crystal system. a. hexagonal b. isometric c. monoclinic d. triclinic

How many grams of CuSO4 are there in 100.0 g of hydrate? How many moles?

Which student is determining the atomic mass of sodium?

Ionic compounds can conduct electricity when dissolved in water or melted, because a. the ions are free to move. b. they have no ions to contribute to the solution. c. the ions are fixed in place. d. they have shared electrons.

What does the number next to the ion signify?

Write a molecular equation for the precipitation reaction potassium chloride and lead (II) acetate