Nitrogen is made up of two isotopes N-14 and N15. given nitrogen's atomic weight of 14.007 what is the percent abundance of each isotope

If a pressure is reported as 1.25 atm, what is that pressure in milliliters of mercury?

What best describes earths mantle

If 1 mole of gas occupies 22.4 liters of space, calculate the number of moles that will occupy 11.2 liters of space? Make sure to show your work.

If 37.5 ml of. 100m calcium chloride reacts completely with aqueous silver nitrate, what is the mass of agcl precipitate

Solutions that are acidic have a ___ concentration of H + ions and a ___ concentration of OH-ions. Solutions that are basic have a ___ concentration of OH-ions and a ___ concentration of H + ions.

Iodine-131 decays to form xenon-131. the half-life of this reaction is 8.07 days. from a 200-g sample of iodine-131, how much of the sample is xenon-131 after 16.14 days?

Complete the following statement by checking all that apply Creativity allows scientists to develop multiple approaches to solving problems. adapt to changes in scientific knowledge. look at old problems in new ways.

The atomic weight of hydrogen is 1.00794. a. True b. False

Describe What kind of ions do metals form? What kind of ions do nonmetals form?

A car is driven through streets treated with salt and then parked in a warm garage. a) How will the rate of rusting compare with a car that has not been driven in the streets treated with salt but left parked outside?