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

Write a procedure for testing the thermal conductivities of 1 inch by 1 inch squares of aluminum and copper.

If we have 22 molecules of sodium sulfate in water, how many sodium ions will be observed in solution?

What's the percent by mass of carbon in c10h14n2

Which type of change does the statement describe? A. particals rearrange into new combinations, forming new substances. B. their is no new change in the chemical properties of the substance. C. particals retain their composition and identity. D.

A known compound contains two atoms of sulfur and two atoms of oxygen. Write the name and formula of this compound.

What is a resistor do?

Select all of the following statements that are incorrect. A. Solids, liquids, and gases are all able to act as solutes in a solution. B. Solids, liquids, and gases are all able to act as solvents in a solution. C.

Molecular bromine is 24 percent dissociated at 1600 k and 1.00 bar in the equilibrium br2 ( g. = 2br ( g. calculate kp at 1600 k.

which layer of the earth contains melted silicone compounds a. core b. mantle c. biosphere d. asthenosphere e. lithosphere

What is the relationship between law of conservation and chemical reaction?