Find the molar mass of 2Cu (NO3) 2

Which of the following is NOT an example of a physical change? a. the shaping of a gold bar b. the explosion of fireworks c. the melting of a Popsicle d. the sanding of a piece of wood

Consider the following equilibrium: B (aq) + H2O (l) ⇌HB + (aq) + OH - (aq) Suppose that a salt of HB + is added to a solution of B at equilibrium. Part A Will the equilibrium constant for the reaction increase, decrease, or stay the same? A.

Jasper and gemma are going to play on a teeter totter. gemma gets on first. when jasper gets on gemma moves into the air but she does. not. move to the top. which statement would correctly explain the forces acting on the teeter totter

A mixture of propane and butane is burned with pure oxygen. The combustion products contain 47.0 mole% H2O. After all the water is removed from the products, the residual gas contains 68.6 mole% CO2 and the balance O2 a.

A helium balloon can hold about 6.8 mol of the gas. Assuming the balloon is kept at room temperature (25°C) and had a maximum of 1.2L, what is the pressure inside teh balloon

One light year is about 9 trillion kilometers. Arcturus is a star that is 37 light years from earth. If you are about 11 years old now, how old will you be when light that is leaving Arcturus today reaches earth?

What is melted rock and minerals found below earths crust

What do many bases have in common? A. They often release oxygen gas. B. They often form hydrogen ions. C. They often release hydrogen gas. D. They often form hydroxide ions.

What is 3 tenths+4tenths

A lunar eclipse can only occur at which lunar phase? And what about a solar eclipse?