Which of the following is/are part of the nitrogen cycle?

eutrophication

denitrification

saturation

all of the above

What qualities make one theory "better" than another in the scientific community?

The name of acids that contain a polyatomic ion that have oxygen A. Oxyacids B. Oxion C. Hyperacids

Which of the following terms best describes a group of galaxies? Select one: a. Cluster b. Constellation c. Solar system

What is the max amount of Cu that would be produced by reacting 20g of Al with excess CuSO4

How does pressure affect the solubility of a gas? A. Pressure has little effect on the solubility of a gas. B. Decreasing the pressure increases the solubility of a gas. C. Increasing the pressure makes the gas less soluble. D.

Which situations will NOT increase the reactions rate of most chemical reactions A) an increase in temperature B) grind up the solute to increase surface area before mixing C) by increasing the pressure in which the reaction takes place D)

The rate constant for a first-order reaction is 0.54 s-1. What is the half-life of this reaction if the initial concentration is 0.33 M?1.8 s1.3 s0.089 s5.6 s0.31 s

Arrange the following alkyl bromides in order from most reactive to least reactive in an SN2 reaction: 1-bromo-2-methylbutane, 1-bromo-3-methylbutane, 2-bromo-2-methylbutane, and 1-bromopentane.

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?

Which element is in the same period as Na, Li, or, Mg