There are 4 types of biomes. T F

Which of the following atoms acquires the most negative charge in a covalent bond with hydrogen A) C B) Na C) O D) S

Calculate the lattice energy for NaF (s) given the following sublimation of energy + 109 kj/mol Hf for F (g) + 77 kj/mol first ionization energy of Na (g) + 495 electron affinity of F (g) - 328 enthalpy of formation of NaF (s) - 570 kj/mol A.

What is the concentration (M) of average sea water if there is 0.6 mol of salt for 1 Liter of water?

Reaction of hexamethylbenzene with methyl chloride and aluminum chloride gave a salt a, which, on being treated with aqueous sodium bicarbonate solution, yielded compound b.

How does a hypotonic solution affect a red blood cell? How does it affect a gram positive bacterial cell?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda