What mass solute is contained in 25.00 ml of a 0.500 m sodium hydroxide solution?

If the same amount of cacl2 is added to equal volumes of water and maple syrup, which will have the higher temperature?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?