What is a sample of matter that has definite physical and chemical properties?

How many grams are in 1.11 moles of manganese sulfate, Mn3 (SO4) 7?

What coefficients are necessary to balance the equation? ___C3H8 + __O2 ® __ CO2 + H2O

The sun exerts a what ...

Why can some metals be extracted from compounds by heating with carbon and why can some not

Which fraction of an original 20.00-gram sample of nitrogen-16 remains unchanged after 35.65 seconds?

Polar molecules have a partial positive charge on one side and a partial negative charge on the other side, a separation of charge called a dipole. Which of the following molecules has this kind of a dipole? a. IonicB. Covalent

A fictitious element X is composed of 15.0% of the isotope X-51, 15.0% of the isotope X-52, and 70.0% of the isotope X-53. Estimate the atomic mass of element C

Which substance is the limiting reactant when 4.0 g of sulfur reacts with 6.0 g of oxygen and 8.0 g of sodium hydroxide according to the following chemical equation: 2 S (s) + 3 O2 (g) + 4 NaOH (aq) → 2 Na2SO4 (aq) + 2 H2O (l) A. O2 (g) B. S (s) C.

If EG = 19 and FG = 12 then EF = ?

Given the following reaction: 4Fe + 302 → 2Fe2O3 How many grams of Fe2O3 will be produced from 24.0 g of Fe and 5.00 g of O2? grams (round to three significant figures)