If a dinosaur once lived in mexico, and i now live in arkansas, can i be drinking the same water the dinosaur did?

Which is NOT unique to each element A. Proton number B. atomic number C. neutron number D. chemical symbol Reward: A friend

What is enthalpy a measure of? The heat content of a system. The kinetic energy of a system. The number of moles of reactant in a system. The disorder of a system.

Find the mass in 6.2 miles of lithium bromide, show work

A student obtained 1.69 g of pure caffeine following recrystallization from a crude sample, which originally weighed 2.51 g. What is the percent recovery of pure caffeine from crude?

Which term defines the ability of a solute to dissolve with a solvent

A farmer has a 10 acre plot to feed his family. What is the most efficient way to use the plot? A. Grow corn and feed it to his family B. Grow corn and feed it to several cows, using the milk and meat from the cows to feed his family

If 25 mol of C8H18 are available, how many mol of CO2 can be produced

Nicotine, a component of tobacco, is composed of c, h, and n. a 4.725 - mg sample of nicotine was combusted, producing 12.818 mg of co2 and 3.675 mg of h2o. what is the empirical formula for nicotine?

Magnesium has three naturally occurring isotopes with masses of 23.99, 24.99, and 25.98 amu and natural abundances of 78.99%, 10.00%, and 11.01%. Calculate the atomic mass of magnesium.

Sexually reproducing organisms pass on genetic information as a? (answer fast)