Aquifers are?

A. Not accessible unless the water is pumped out mechanically.

B. Recharged during drought seasons.

C. Underground resources of freshwater.

Which element in group 15 is the strongest metallic character?

The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrogen fluoride. 5 F2 ( g. + 2 NH3 ( g. N2F4 ( g. + 6 HF ( g. ( a. If you have 73.7 g NH3, how many grams of F2 are required for complete reaction? b.

The temperature of a gas is increased. Which statement best explains the effect that is has on the motion of gas particles

For the balanced equation shown below, how many moles of O2 will react with 0.3020 moles of CO2? 2C2H5OH + 6O2 → 4CO2 + 6H2O 0.151 moles O2 0.201 moles O2 0.302 moles O2 0.453 moles O2

How many grams of AgNO3 are needed to prepare a 0.25 m solution in 500 grams of water? Question 2 options: 125 g 0.125g 21.25 g 170g

What are the major function of the digestive system

What is a substance made of identical atoms called?

The hydroxide ion concentration in pure water at 25ºC is NOT equal to A. the hydronium ion concentration. B. 1 X 10^-7 M. C. the hydroxide concentration in a solution with a pH of 7. D. 1 X 10^7 M.

1. Why do rings stay shiny?

Which technology collects data for weather, climate, and environmental monitoring from space? radar satellites weather stations weather balloons