What is the mass, in grams, of a sample of 6.12 * 10^24 atoms of manganese (Mn) ? Show your work or explain the steps that you used to determine your answer.

Which is the best predictor of the radioactive nature of an isotope? (A) the proton-to-electron ratio (B) the neutron-to-proton ratio (C) the neutron-to-electron (D) ratio the electron-to-proton ratio

How many miles are in 454 grams of CO2

In what way is sound and light alike. Both: A. have the same speed B. have waves C. have the same source D. travel on air molecules

What is the oxidation state for compounds?

Which is true regarding heme? which is true regarding heme? the binding of an oxygen molecule to the iron in a heme unit is completely reversible. each heme unit holds an iron ion in such a way that the iron can interact with a hydrogen molecule.

How many moles are in 16.94g of water?

Two compound samples are found to have the same mass percentages of the same elements. what can you conclude about the two samples

Sodium hypochlorite (Na xCl yO z) is the active ingredient in household bleach. A 250.0 g sample of sodium hypochlorite contains 77.2 g sodium, 119.1 g chlorine, and the remainder is oxygen. Calculate the empirical formula of sodium hypochlorite.

The tapeats sandstone in the grand canyon is an example of a clastic sedimentary rock. such clastic sedimentary rocks can be distinguished from biochemical sedimentary rocks by

An ice cube and a scoop of table salt are left outside on a warm, sunny day. Explain why the ice cube melts and the salt does not