A 2.50 L solution contains 5.00 g of NaOH, which has a molecular weight of 40.00

mol

What is the molar concentration of sodium hydroxide in the solution?

0.436 g of an unknown diprotic acid is dissolved in about 60 mL of water in a beaker. The solution is transferred to a 100.00 mL beaker. 25.00 mL of this solution is then transferred to an Erlenmeyer flask for the titration.

A neutral atom contains 12 neutrons and 11 electrons. The number of protons in this atom is (1) 1 (3) 12 (2) 11 (4) 23

The unit of 1 atmosphere used to describe the pressure of a gas is equal to 760 mm hg. 200 mm hg. 600 mm hg. 100 mm hg. 1 mm hg.

According to Dalton, what happens to atoms during a chemical reaction? Atoms gain or lose energy. Atoms are rearranged. Old atoms are destroyed. New atoms are created.

The ionic equation for MgCl2 and KOH.

Mr Smith is walking his dog. He walks for 5 minutes (300 seconds) at a speed of 1.5 m/s. His dog runs at a speed of 5 m/s for the same time. a How far does Mr Smith walk? b How far does the dog run?

Gasoline has a density of 0.749 g/mL. How many pounds does 19.2 gallons of gasoline weigh? Use significant figures. Do not enter "pounds" as part of your answer.

Which of these changes involved a physical change and not a chemical change?

Which of the following statements is true? Running an electric current through a magnet can create a magnetic field. Electric engines change electricity into magnetism. The strength of a magnetic field increases with distance.

valancy of x is 3 while that of y is 1. write a formula of the compounds when each of the seperaty combines with oxygen