A sample of an element is malleable and can conduct electricity. This element could be

(1) H (3) S

(2) He (4) Sn

When you run an electrical current through liquid water, the water molecules are split apart to form oxygen and hydrogen gas. The transfer of energy caused what kind of change to the water?

How many grams are there in 7.40 moles of AgNO3

The formula for iron (II) chloride

Which of the following is a compound? a. H2O b. He c. O₂ d. Ca

A flask containing solid ammonium chloride becomes colder as water is added and the salt dissolves. is the magnitude of the lattice energy of nh4cl larger or smaller than the combined hydration energy of the ions?

Which of the following lines (of latitude or longitude) would represent by 180 longitude? South Pole Equator Prime meridian North Pole International date line

63Ni decays by a first-order process via the emission of a beta particle. The 63Ni isotope has a half-life of 100. years. How long will it take for 65% of the nickel to undergo decay?

Based on the standard free energies of formation, which of the following reactions represent a feasible way to synthesize the product? A. 2C (s) + H2 (g) →C2H2 (g); ΔG∘f=209.2 kJ/molB. N2 (g) + 3H2 (g) →2NH3 (g); ΔG∘f=-33.30 kJ/molC.

How do I find the molar mass of Copper (II) Nitrate?

Describe several main ideas in chemistry