Why can't we breathe in pure oxygen for long

A chemist adds 405.0mL of a 0.79M sodium carbonate solution to a reaction flask. Calculate the millimoles of sodium carbonate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

If we're interested in knowing the rate at which light energy is received by a unit of area on a particular surface we're really trying to figure out the

1. Who is the father of atomic theory? 2. Who discovered the electron? 3. Who expressed particles by wave equations? 4. Who researched on radioactivity? 5. Who discovered the "open spaces" model? 6. Who applied quantum theory to atoms?.

For a given amount of matter, this type of reaction produces the most energy. A. fusion B. fission C. physical D. chemical

A substance that has a uniform composition and is able to be separated by physical means

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda