How is acid rain harmful for aquatic life?

What is the molarity of a solution in which 58 grams of NaCl are dissolved in 2.0 liters of solution

Question 5 of 20: Select the best answer for the question. 5. Which of the following is a homonuclear diatomic molecule? O A. NH3 O B. 2002 O C. Hz O D. CO

Cindy makes herself a cup of hot chocolate on a very cold day. If Cindy's hands are very cold and the cup is very hot, heat energy transfers from the cup to her hands because

A brick lies perilously close to the edge of the flat roof of a building. The roof edge is 50 ft above street level, and the brick has 370.0 J of potential energy with respect to street level.

What is one limitation of descriptive investigations? They cannot show cause and effect. They produce lots of data. They can be done at a lower cost. They follow procedures.

According to the octet rule most elements need_valence electrons.

What is the average speed of particle in a gas at room temperature? Why is temperature an important variable?

An electron is in a region outside the nucleus. An electron a) Is larger than a proton and has no charge b) Has less mass than a proton and has a negative charge c) Is smaller than a proton and has no charge d) Has a positive charge

Under conditions of "feasting", the body favors oxidation/utilization of which source for energy production

2.17 in to 10^23 molecules of Br 2 to moles