If a atom has 7 protons and 7 electrons what charge will it have

Why is there a difference between sodium and potassium in the reactivity with water

Compare and contrast the uses of the iron triad and the use of the coinage metals

Pure substances found on the periodic table are called what?

How many electrons are in the highest energy orbital of the element copper?

State why chemical equations are useful

A seismograph uses a ... to record drums vibration

The volume of a gas is 36.0 ml at 10.0°c and 4.50 atm. at what temperature (°c) will the gas have a pressure of 3.50 atm and a volume of 85.0 ml?

Velocity is the slope of the acceleration vs. time graph. O A. True False

What is the hydronium ion concentration of a solution whose pH is 12.40?

At a certain temperature, the equilibrium constant, kc, for this reaction is 53.3. h2 (g) + i2 (g) â½âââ2hi (g) kc=53.3 at this temperature, 0.700 mol of h2 and 0.700 mol of i2 were placed in a 1.00-l container to react.