A 10 gram rubber ball is placed in a graduated cylinder filled with 15 mL of water. If the volume in the graduated cylinder increases to 21 mL after the ball sinks to the bottom of the cylinder, what is the density of the rubber ball?

What is the molarity of a 2.0 L sodium hydroxide solution containing 10.0 grams of solute

What type of mutation results when a nucleotide is dropped from a dna sequence?

Which element shares the most characteristics with neon (Ne) ?

How many carbon atoms are contained in 84.3 g of ethyne (c2h2) ?

A solution has a pH of 2.5. What is its [OH-]? 3.2 x 10-3 3.2 x 10-12 3.2 x 10-2 11.5

1. What is an isomer? How many possible isomers of hexane are there? What are the structural differences between these isomers?

An ion of oxygen contains eight protons and has a charge of 2-. What must occur for this ion to become a neutral oxygen atom? Group of answer choices It must lose two electrons. It must gain two protons. It must gain two electrons.

If 46.1 g of copper at 11.6 °C is placed in 85.0 g of water at 72.4 °C, what is the final temperature of the mixture? The specific heat capacities of copper and water are 0.385 J/g. K and 4.184 J/g. K, respectively, a. 71.2 °C b. 51.0 °C C 69.5 °C d.

how many grams of water are produced when 15 grams of magnesium hydroxide are reacted with sulfuric acid

Which would have the lowest input force? A short lever with a large fulcrum A long lever with the fulcrum as far as possible from the load A Short lever with the fulcrum as close as possible to the load A long lever with the fulcrum as close as