What approximate percentage of the Earth's freshwater is groundwater?

a.

10%

b.

20%

c.

30%

d.

40%

Identify the reactant and products in the following chemical reaction: CH4 + 2O2 ➡ CO2 + 2H2O

A patient receives an injection of 2.0 ml of anesthetic. what is the equivalent of this volume in cubic centimeters? a. 0.020 cm3 b. 0.20 cm3 c. 0.002 cm3 d. 20 cm3 e. 2.0 cm

True or False: No matter how plentiful resources are, members of a population will always compete for resources.

How many zinc atoms are there in 65.4 g?

When finding the mass number of an element do you round the atomic mass up or down? Ex. atomic mass of 74.9216, is the mass number 75 or 74

How many daughter cells are produced in meiosis?

Sodium chlorite - > sodium chloride + oxygen what type of chemical reaction is represented by this equation

The mixing of which pair of reactants will result in a precipitation reaction? the mixing of which pair of reactants will result in a precipitation reaction?

A balloon has 18.9 moles of hydrogen gas at a volume of 428 L. What would the volume of the gas be if the balloon had 14.0 moles of hydrogen gas left after 1 day?

An analytical chemist is titrating 242.5 mL of a 1.200 M solution of hydrazoic acid HN3 with a 0.3400 M solution of NaOH. The pKa of hydrazoic acid is 4.72. Calculate the pH of the acid solution after the chemist has added 1006.