What form is the underlined verb in the sentence?

Native American tribes in the eastern United States first * played * this fast-paced game hundreds of years ago.

a. past participle

b. past

c. present

d. present participle

Four coordinate nickel complexes can have another geometry other than tetrahedral. Name that geometry, and explain why the absorption spectrum you took strongly suggests a tetrahedral geometry, as opposed to the other possible option.

Several years ago, a group of scientists discovered evidence for a new element not found on the periodic table. Most scientists did not accept the discovery at that time. Since then, other scientists have seen evidence of the new element.

The concentration of H30 in your swimming pool is 4 x 10^-5 M. What is the pH of your pool? O a.-4.4 Ob. 4.4 Oc. 0.00004 O d.-0.6 O e. 0.6

A container of carbon dioxide gas at a pressure of 325 kPa and a temperature of - 5.20 °C has a fixed volume. What is the pressure inside the container after it warms to 22.5 °C?

What is the oxidation state Ca (NO3) 2

How many moles of ZnCl, will be produced from 23.0 g of Zn, assuming CuCl, is available in excess?

Glaciation in Alaska is a result of interactions between which of the following "spheres"? Check all that apply. A. biosphere B. exosphere C. geosphere D. cryosphere E. atmosphere F. hydrosphere

In the following equation: FeCl3 + O2 = Fe2O3 + Cl2, what is the limiting reactant if 4 moles of FeCl3 react with 4 moles of O2?

What are some special effects you can make with dry ice?

Choose the statement that best completes the sentence. Whether a substance is a gas, liquid, or solid is dependent on the natural attractive forces between molecules and how the molecules collide with the container.