A physical change occurs when a

If 49.00 mL of acetic acid was titrated using 0.340M NaOH solution.  The solution turned faint pink after adding 21.06 mL of NaOH.  What is the molarity of the acetic acid?

What is the oxidation state of oxygen in H2O2?

A 5.0 g sample of silver is heated from 0ºC to 35ºC and absorbs 42 J of energy as heat. What is the specific heat of silver?

A 1.00 L sample of a gas has a mass of 1.92 g at OoC and 760. mm Hg. What is the molar mass of the gas?

Calculate the approximate temperature of a 0.50 mol sample of gas at 750 mm Hg and a volume of 12 L.

What’s the oxidation state of H in H2?

How many milliliters of a 0.171 M solution contain 1.00 g of NaCl? (molar mass of NaCl = 58.44 g/mol)

If 1 inch equals 2.54 cm, how many centimeters equal 1 yard?  hint:  1 yard = 3 ft.

For the reaction represented by the equation 2H2 + O2® 2H2O, how many moles of water can be produced from 6.0 mol of oxygen?