How many moles are it 68.50 g H2SO4? (Molar mass = 98.09 g/mol)

which atoms are most likely to form covalent bonds A) metal atoms that share electrons B) metal atoms that share protons C) nonmetal atoms that share electrons D) nonmetal atoms that share protons

Which of the following statements is TRUE? a) Particles of different masses have the same average speed at a given temperature. b) The larger a molecule, the faster it will effuse.

Which of these is a conversion from chemical energy to mechanical energy? A. A dark light bulb starting to glow B. A ball rolling down a hill C. A person lifting a weight D. A potato being heated in an oven

In humans, infections by fungi and protists are usually more difficult to treat than bacterial infections. Suggest an explanation that is based on cell structure.

25.0cm3 of arsenic acid, H3AsO4, required 37.5cm3 of 0.100 mol/dm3 sodium hydroxide, NaOH, for neutralization 3NaOH (aq) + H3AsO4 (aq) - > Na3AsO4 (aq) + 3 H2O (1) Find the concentration of the acid in g/dm3

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.