if the length of a single carbon-carbon bond is 154pm and the length of a double carbon-carbon bond is 133pm, what length would be expected for the carbon-carbon bonds in benzene.

How many different kinds of monomers are there in nucleic acids?

Zinc reacts with excess hydrochloric acid to produce zinc chloride and hydrogen gas. What happens to the reaction rate if you increase the concentration of zinc? A.

Calculate the volume of a sample that has a mass of 33g and a density of 3g/mL

I have 345mL of a 1.5M NaCl solution. If I boil the water until the volume of the solution is 250mL, what will the molarity of the solution be? A. 28.5M B. 1.07M C. 2.07M D. 1.5M

How does a hydronium ion molecule form? A) Evaporation. B) Two water molecules bonded. C) A water molecule gained an hydrogen ion from another water molecule. D) A hydrogen molecule bonded with an OH - molecule. E) A water molecule split in half

Modern scientists use a version of the metric system called

Which element has a larger ionic radius than calcium? a. sodium b. gallium c. magnesium d. potassium

Which solution contains the largest number of moles of chloride ions? a. 30.00 ml of 0.100m cacl2 b. 10.0 ml of 0.500m bacl2 c. 25.00 ml of 0.400m kcl d. 4.00 ml of 1.000m nacl e. 7.50 ml of 0.500m fecl3?

What is the chemical formula of titanium (II)

Not related to any subject but how do you tell someone you like them?