How many oxygen molecules are in 20.00 L of oxygen gas at STP?

What is the mass of a sample of NH3 containing 7.20 * 1024 molecules of NH3? 161 grams 187 grams 203 grams 214 grams

Which of the following includes a wedge. A. axe B. file c. bolt d. hammer

Which of the following describes resistance? completely stops electron flow impedes the flow of electrons is an insulator has to do with the voltage in the circuit

What best describes the trends in electronegativity on the periodic table

When converting the volume of water to mass of water, what conversion unit would you use? A. one milliliter of water equals one milligram of water B. one liter of water equals one gram of water C. one liter of water equals one kilogram of water D.

If 4520 kj of heat is needed to boil a sample of water, what is the mass of water

In which direction does heat flow? Cold to Cold Cold to Hot Hot to Cold Hot to Hot

How much heat is it required to melt 160.0g of water at 0°C

One liter of ocean water contains 35.06 g of salt. How much salt is present in 3.79 L of ocean water? Express your answer in grams using the correct number of significant figures. Do not enter your answer using scientific notation.

If I have 325 mL of oxygen gas at a temperature of 25°C, and I heat it to a temperature of 75°C, what is the new volume (in mL) ?