Which of the two objects or substances has the higher energy…

Which of the two objects or substances has the higher energy? Answer with a number, 1 or 2. A carbon dioxide molecule moving at 1.63 x 102 mi/hr or the same molecule moving at 1.81 x 103 mi/hr. [tim10]   Carbon dioxide solid (dry ice) or Carbon dioxide gas (assume the two systems are at the same temperature) [tim11] An uranium hexafluoride, UF6, molecule moving at 1.63 x 103 Mi/hr or A water molecule moving at the same velocity.   [tim12] A methane molecule, CH4, in the stratosphere or A CH3 molecule and a hydrogen atom formed from breaking one of the carbon-hydrogen bonds in a CH4 molecule? [tim9]

Express the concentration of each of the following solutions…

Express the concentration of each of the following solutions in terms of molarity (M): Give the answers to 2 decimal places.   3.00 L of solution contains 1.5 moles of solute. [red19] M   215 ml of solution contains 10.3 g of isopropyl alcohol, C3H7OH [red20] M

Solution calculations: Give answers to 1 decimal place.   A…

Solution calculations: Give answers to 1 decimal place.   A 150 mL sample of saltwater is evaporated to dryness. A residue of salt weighing 37.9 g is left behind. Calculate the %(w/v) of the original saltwater. [red21] %   A solution is made by mixing 100.0 ml of alcohol with enough water to give 250. mL of solution. What is the %(v/v) concentration of alcohol in the solution? [red22] %

Solutions of NaOH and HCl react according to the following e…

Solutions of NaOH and HCl react according to the following equation:   NaOH  +  HCl –> NaCl +  H2O   What volume of 0.250 M NaOH solution contains 0.220 mol of NaOH? Give answer to 2 decimal places. [red23] liters   What volume of a 0.200M NaOH solutions is needed to exactly react with 0.150 mol of HCl?Give answer to 2 decimal places. [red24] liters

The area of a rectangle is the length times the width. What…

The area of a rectangle is the length times the width. What is the area of a rectangle that is 2.5 m by 2.0 m. Calculate the area in square meters and in square centimeters. Answer in whole numbers.   Area = [red1] square meters   Area = [red2] square millimeters

An irregularly shaped object weighs 60 grams. A researcher w…

An irregularly shaped object weighs 60 grams. A researcher wants to know its density so she takes a graduated cylinder and fills it to 50 ml. When the object is placed in the cylinder the water volume increases to 88 ml. What is the density of the object. Give the answer to 1 decimal place. [red38] g/ml