Calculate the molar mass of an unknown if a solution containing 3.56 g of unknown in 56.2 g of water froze at - 1.60c

The chemical properties of an atom are related to the number of its what

How is the concentration gradient of a substance important to diffusion?

1 mg is equal to 10-3 hg. 103 dg. 10-3 g. 10-2g.

Which element has the larger atomic radius lithium or potassium

A 94 L sample of neon gas (molar mass = 20.2 g/mol) has a mass of 44 g at a pressure of 150 kPa. What is its temperature in Kelvins?

Which best describes a spontaneous process as it relates to the second law of thermodynamics? It destroys heat. It requires work. It creates energy. It occurs naturally.

What mass (in mg) does 2.63moles of nickel have?

What does the energy hill represent on an energy diagram? A. The potential energy gained by the products when a reaction happens B. The final amount of potential energy of the products of the reaction C.

Compared to the ideal angle, you would expect the actual angle between the bromine-oxygen bonds to be

Iron is an important element in human body cells. If iron has an atomic number of 26, what does this tell you about this element?