A layer of peat beneath the glacial sediments of the last ice age had a carbon-14 content of 25 % of that found in living organisms. How long ago was this ice age?

If you had excess aluminum, how many moles of aluminum chloride could be produced from 17.0 g of chlorine gas, cl2?

Calculate the number of kg, g, and mg in 1/4 lb of margarine

Find the average atomic mass of neon, given the atomic masses and relative abundance of its 3 isotopes

More polar solvents (eluents) move molecules more rapidly than less polar solvents. If you used a 1:1 hexanes:methanol mixture as solvent, would you expect the products to elute faster or slower?

3.80 moles of oxygen are used up in the reaction. How many moles of water are produced?5. How many grams of oxygen does it take to produce 9.60 moles of carbon dioxide?6. How many moles of carbon dioxide are produced with using 5.

What value is the closest to the atomic mass of cerium? Isotope Percent Abundance 136Ce 0.185% 138Ce 0.251% 140Ce 88.450% 142Ce 11.114%

Which element could chlorine bond with to form an ionic compound? helium oxygen fluorine sodium

Given 4.8 moles of a gas in a 1.8 L container, if the temperature is found to be 31 degrees Celsius, what is the pressure of the gas? (The ideal gas constant is 0.0821 L · atm/mol · K and 1 atm = 760 torr.) 6.79 torr 66.55 torr 6.79 x 100 atm 6.

Write this number to two significant figures in scientific notation. Use the "^" character to indicate the exponent. 4.253

AN atoms nucleus contains it's protons and electrons true or false