1.) I am in period two and have an atomic mass of eleven. Who am I?

2.) I have one hundred twenty one electrons and can be found in the same group as Zinc. Who am I?

3.) I am the only element with no neutrons in my nucleus. Who am I?

Use your trendline equation to determine the gas pressure at 200 K and 400 K. (notice the temperature units) How many times greater is the pressure at 400 K in comparison to 200 K? Is this what you'd expect? Why?

Coal, oil, and natural gas are inexpensive sources of fuel which do not cause pollution wen used True False

What is the significant figure of 5,000,000,000,000

What are the processes water moves through, in order, as it moves from the surface of a lake to a cloud in the sky?

What comes last in the scientific method

To determine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capacity. She first weighs the rock and finds that it has a mass of 4.7 g. She then finds that, upon absorption of 52.

In most Acid-base reactions, what type of bond (ionic or covalent) is formed between the ions of the "salt"? What happens to the electrons in this sort of bond? Are they transferred, or shared?

Many trials are not needed before a hypothesis can be accepted

Consider the following reaction where Kp = 4.55*10-5 at 723 K: N2 (g) + 3H2 (g) ⇋ 2NH3 (g) a) If the three gases are mixed in a rigid container at 723 K so that the partial pressure of each gas is initially one atm, what will happen?

Rob measures the solubility of three different salts in water at 22°C. Which type of graph should he use to display his data? bar graph line graph histogram scatterplot