You begin with a 50 g chunk of ice. Calculate the amount of heat needed to change this ice into50 g of steam.

What is the molar mass of potassium oxide, K2O? A. 47.0 g B. 110.0 g C. 94.0 g D. 55.0 g

What is 2 plus 2 minus 1 plus 1

What would be the volume of 0.500 mole of an ideal gas at a temperature of 273.15 Kelvins and 1 atm?

What is the color of bromcresol green indicator in a solution with a pH of 2.0

There are 3 type of polar bear one with thick coat one with thin and one with medium which polar bear will not benefit from natural selection

A student mixes 0.50 L of 0.0020 M Ba (NO3) 2 solution with 0.50 L of 0.0080 M Na2SO4 solution. Which equation shows the proper set-up to calculate molar concentration of Ba2 + ions in the new solution? (0.0020 M) (1 L) = (? M) (0.0020 M) (0.

What is the minimum number of carbon atoms a ketone may contain

The gas-phase decomposition of NOBr has a k = 0.810 M-1 s-1 at 10°C. NOBr (g) → NO (g) + ½ Br2 (g) rate = k[NOBr]2 We start with 0.00200 M NOBr in a flask at 10°C. (a) How many minutes does it take to use up 0.

What new scientific evidence led to changes in Dalton's atomic theory?

What other property do metal share