Which of the following energy producing methods can sometimes lead to riverbed erosion?

a.

solar

b.

wind

c.

hydroelectric

d.

geothermal

the answer is C

What can a drop of liquid mercury be described as? A) a pure substance and a compound B) an impure substance that is reactive C) an impure substance that is unreactive D) a pure substance and an element

True or false: Objects that are neutrally charged have no electrical charges present.

Why are metals good conductors of heat and electricity? A.) anions rotate around the stationary electrons B.) cations rotate around the stationary electrons C.) free moving atoms in metals carry both heat and electric current D.

Explain why the chemical released from the injured fish may not cause in a wa why the chemical released from the injured fish may not cause in alarm response in other fish species

The electronegativity value for Mg is 1.2 and the value for O is 3.5. Based on these values, what type of bond is expected for a compound formed between Mg and O?1. pure covalent 2. ionic 3. polar covalent 4. none of these 5. not enough information

31.65 mL volume of 1.07 M Fe (NO3) 3 is mixed with 44.96 mL of 0.79M Fe (NO3) 3 solution. Calculate the molar concentration of the final solution. Save rounding until the end.

At standard pressure, during which physical change does the potential energy decrease?

How are inner and outer planets different?

What process do body cells use to divide

Recall the postulates of kinetic molecular theory read the list and check all the statements that apply to behavior of an ideal gas