A marathon is a race that commemorates the run made by a Greek soldier, Pheidippides, that took place in August 490 BC. The soldier ran 26.2 mi. How many kilometers did he run?

In general, as you move from right to left across a period, the number of valence electrons

You have identified your product to be butylnapthyl ether and recrystallize it. The initial mass of the the crude ether was 141 mg. The mass after recrystallization was 121 mg. Calculate the percent recovery from recrystallization.

g A mixture of gases contains 6.46 g of N2O, 2.74 g of CO, and 5.40 g of O2. If the total pressure of the mixture is 4.33 atm, what is the partial pressure of each component? a) P (N2O) = 0.635 atm, P (CO) = 0.424 atm, and P (O2) = 3.27 atm.

Which of the following pairs are not miscible? Group of answer choices hexane, C6H14 and water benzene, C6H6 and hexane, C6H14 ethyl alcohol, CH3CH2OH and water methyl alcohol, CH3OH and water pentane, C5H12 and hexane, C6H14

In a galvanic cell, a spontaneous redox reaction occurs. however, the reactants are separated such that the transfer of electrons is forced to occur across a wire.

How would you describe the motion of plates in a collision zone?

The type of solution formed by creek water after heavy rain is called a colloid. true or false.

Whose work did Niel Bhor build upon?

How many rings does an alkane have if its formula is c8h12?

What is the result of a neutralization reaction between nitric acid (HNO3) and potassium hydroxide (KOH) ?