What is the name of the variable that you change in an expiernment

Calculate the mole fraction of MgCl2 in a solution created by dissolving 132.1g of MgCl2 in 175mL of water.

A student states that non-metal atoms share their core electrons when they form covalent bonds. What is wrong with this statement? A. Atoms do not share electrons during covalent bonding. B.

A pebble sinks in water a twig floats on top of the water compare the densities of the water the pebble and the twig

Calculate the kinetic energy (in joules) of a mole of water molecules traveling at 11.7 m/s.

For which of the following reactions is the ratio kp/kc largest at 300 k?

Benzene contains only carbon and hydrogen and has a molar mass of 78.1 g/mol. Analysis shows the compound to be 7.44% hydrogen by mass. Find the empirical and molecular Formula of benzene.

What is the Lewis structures for Ca (OH) 2

Compare and contrast homogeneous and heterogeneous mixtures using key terminology, and provide at least three examples of each. For example, explain what the mixture is comprised of and what makes it homogeneous or heterogeneous.

Which element would most likely have chemical properties similar to that of fluorine (F) ?

Percentage compostion of carbon in CaCO3