A flask that has a mass of 345.8 g is filled with 225 mL of carbon tetrachloride. The mass of the flask and the carbon tetrachloride is found to be 703.55 g. Calculate the density in g/mL and kg/L.

Which statement best defines a universal law

The speed of light in a vacuum is 2.998 x 10⁸ m/s. Calculate its speed in km/hr.

Which situation would not cause the following equilibrium to shift to the right

if you combine 390.0 mL of water at 25.00 °C and 110.0 mL of water at 95.00 °C, what is the final temperature of the mixture? use 1.00 g/mL as the density of water.

The element copper (Cu) has two naturally occurring isotopes, 63Cu and 65Cu, with an average atomic mass of 63.55 u. Copper is 69.17% 63Cu, and the atomic mass of 63Cu is 62.9296 u. Calculate the mass of 65Cu (in u).

What is the thermochemical equation for the combustion of methane. Methane formula: CH4 (g) and the deltaH comb - 891 (kJ/mol)

What is the mass of one mole of an element that has aan atomic mass of 6.94?

Zhang is designing protective packaging. He tests his design by dropping a raw egg protected by his packaging from various heights. He finds that the egg is protected up to a height of 11 meters.

An element with a single electron in its highest energy level is probably

Chemical bonds are likely to form when A. two atoms have the same number of electrons. B. an atom's outer energy level doesn't have the maximum number of electrons. C. an atom's nucleus has the same number of protons as neutrons. D.