How many moles of N are in 0.221 g of N2O?

Consider the densities of copper (8.96) and sulfur (2.07), explain why 2 grams of copper takes up much less space than only 1 gram of sulfur.

What is the mass of a 1.00 l sample of a liquid that has a density of 0.967 g/ml? express your answer using three significant figures?

What do organisms need in the space where they live

If 100. mL of 0.400 M Na2SO4 is added to 200. mL of 0.600 M NaCl, what is the concentration of Na + ions in the final solution? Assume that the volumes are additive.

What is the E°cell for the cell represented by the combination of the following half-reactions? ClO4 - (aq) + 8H + (aq) + 8e - Cl - (aq) + 4H2O (l) E° = 1.389 V, VO2 + (aq) + 2H + (aq) + e - VO + (aq) + H2O (l) E° = 0.991 V

Calculate the heat evolved from a mixture of 14.1 l of sulfure dioxide

Which stament best describes a solution

Which answer accurately describes the difference between speed and velocity? Read each answer choice carefully. Question 4 options: A. If speed is constant, then velocity is also constant. B. Speed requires direction.

Least reactive element of period 3

A chemical formula shows the kind and number of Atoms that form a what? compound, mixture, solution, or suspension