A 100 mL graduated cylinder was filled with water to the 50 mL mark. A rock was then added to the cylinder. After the rock was added, the volume of the cylinder was 65 mL. What is the volume of the rock?

How does the arm wrestling tournament represet what Rutherford found out about the positive and negative charges and atom

Two gas jars are connected to each other, but they are separated by a closed valve. One gas jar contains oxygen, and the other is empty. What will happen when the valve is opened?

The molarity of a solution prepared by dissolving. 50 g of nacl in 100 ml water is?

The mass concentration of a potassium chloride solution is 60 g/dm3. What is the mass of potassium chloride in 25 cm3 of this solution?

Would more heat be released when 1.00 gram of ch4 (g) is burned in excess o2 (g) to form co2 (g) and h2o (ℓ) in a constantpressure calorimeter or in a constant-volume calorimeter?

An experiment is performed using 7 liquids; Methanol, Ethanol, Propanol, Butanol, Water, Pentane and Acetone. a.) The order of rates of evaporation from fastest to slowest are shown: Pentane, Ethanol, Methanol, Acetone, Water, Propanol and Butanol.

What does a molecule look like

If a student calculated 0.02789 moles of copper (II) cations (Cu2 + ions) in the sample, how many moles of copper metal (Cu0) could be obtain from the sample at the end of the experiment?

99pts! Which of the following best explains what happens when the kinetic energy of particles in a gas state decreases? They vibrate so quickly that the particles ionize and become plasma.

Which substance can act as an arrhenius base in an aqueous solution