A solution is prepared by dissolving 150 mL of ethanol in enough water to make a 500 mL solution. What is the percent by volume of ethanol in the solution?

10%

30%

70%

What is the frequency of radiation with a wavelength of 5.00 X 10^-8 m

Who found protons and how

Which component of an atom does not significantly add to its mass?

Balance the equation NH4OH + H3PO4 What Are the products of NH4OH + H3PO4

Which of the following rate constants corresponds to the reaction that converts reactants to products in the least amount of time? A. 4.48 x 10-5 min-1 B. 4.48 x 10-5 s-1 C. 0.0547 s-1 D. 0.0547 min-1

The reaction of glucose, c6h12o6, with oxygen produces carbon dioxide and water. what is the sum of the coefficients in the balanced equation?

alexadra has a density of 3.72g/mL. and a mass of 11160 mg. If the object is placed in a graduated cylinder containing 25 mL of water. What is the final volume?

How should she report the answer using the correct number of significant figures? 14.206 14.21 14.2 14

Find the mass in 2.6 mol of lithium bromide. (Hint: You need to write the formula)

Which of the following would NOT be a conversion factor for mole to mole calculations for the following reaction: 2Al 3Cl2 - -> 2AlCl3?