How many electrons does a neutral atom of carbon have?

How many grams of carbon dioxide are formed from 25 moles of octane

Compare the mass of the Mg ribbon with the mass of the magnesium oxide. Notice that the the mass of the magnesium oxide is greater than the mass of the Mg. How do you account for this apparent increase in mass?

A balloon contains 5470cm3 of gas and has a mass of 10.24g. The mass of the empty balloon is2.42g. What is the density of the gas.

Which of the following is used to calculate the distance to a star based on subtle shifts in the star's position relative to an observer on Earth

A friend tells you that her favorite element has an electron configuration of [noblegas]6s24f145d5. which element is it?

Explain the difference between the literal, supernatural, and psychological levels in a story

List the four (4) ways you can tell that a chemical reaction has occurred.

The Ka of a monoprotic weak acid is 6.07 * 10-3. What is the percent ionization of a 0.179 M solution of this acid?

What does LeChatelier's principal mean

How many milliliters of a 0.7% stock solution are required to make 2 l of 0.2% solution? how many ml of solvent will be required to carry out the dilution?