What is the mass of one mole of oxygen molecules?

Solid magnesium reacts with aqueous copper (I) nitrate to from aqueous magnesium nitrate and solid copper express as a chemical equation

What is a reasonable estimate for the radius of an atom?

John's business installed a ramp at the loading dock to make it easier to accept deliveries. Unfortunately John has received many complaints that the ramp is worse than the stairs it replaced and makes it much harder bring in deliveries due to the

Which of these is always equal to the molar mass of any element? A. its atomic number B. its atomic weight C. its atomic formula D. its atomic structure

Is putting salt into water a chemical or physical change

Which law is known as the law of action-reaction

7. A 2.0 L container had 0.40 mol of He (g) and 0.60 mol of Ar (g) at 25°C. Which gas has a greater average kinetic energy? Which gas is traveling at a higher average speed? If Ar has an average speed of 431 m/s, what is the average speed of He?

Which of the following will allow more solute to be dissolved in a solvent? Choose all that apply. * Adding more solute Cooling the solution Agitating the solution Adding heat Using larger crystals

Calculate the average bond order for a p-o bond (such as the one shown in blue) in a phosphate ion.

Match the vocabulary terms to their definitions. 1. standard metric unit of length mass 2. a proposed explanation for a scientific problem hypothesis 3. standard unit of volume liter 4. the curved top surface of a liquid column control 5.