What is the mole fraction of ethanol in a mixture of 0.25 mol of ethanol and 0.4 mol of methanol? Report your answer to the hundreths place.

How many moles are present in 17.4 g of lead?

For most atoms, how many electrons fill the outer shell? A. 4 B. 5 C. 2 D. 8

How does an earthquake cause a tsunami?

DDT was banned from use as a pesticide in the United States because

The process by which water vapor changes to liquid water is called a. condensation. b. evaporation. c. freezing. d. melting.

The ease with which a raw material can be molded, flattened, or bent is known as its? a. malleability, b. ductility, c. elasticity. d. resilience

19 The coefficients in a balanced chemical equation represent (l) the mass ratios of the substances in the reaction (2) the mole ratios of the substances in the reaction (3) the total number of electrons in the reaction (4) the total number of

What volume 12.6 M HCL must be added to enough water to prepare 5.00 litters of 3.00 M HCL?

What are the two main types of exact numbers?

A balloon is filled with helium gas. What will happen as the average kinetic energy of the helium particles increases? The balloon will decrease in total volume. The temperature of the balloon will decrease.