A chemist weighed out

65.8

g

of potassium. Calculate the number of moles of potassium she weighed out.

Round your answer to

3

significant digits.

The graph below shows the electronegativity values for the first six main group elements in Period 2 of the periodic table.

Is oxygen a stable gas

Explain why it is harder to remove an inner shell electrons than a valence electron from an atom

50 dm^3 of a mixture containing 60% CO and 40% H2, by volume, ifs completely burnt in oxygen. Assuming that all volumes are measured at the same temperature and pressure, a) what is the volume of the Oxygen required, abs b) what is the volume of CO2

Consider two gases-oxygen and nitrogen at STP. How will the kinetic energy of the gases be affected if we only increase the temperature of oxygen?

what combination will result in a acidic solution? a reaction of strong acid and strong base b reaction of strong acid and weak base c a reaction of weak acid and strong base d reaction of weak acid and weak base

How many moles of sucrose (C12 H12 O11) would be in 7.1 liters of a 0.93 molarity solution of sucrose?

If the temperature is constant what change in volume would cause the pressure of an enclosed gas to increase by a factor of 4

For the reaction of carbon with carbon dioxide to make carbon monoxide, one set of conditions produced a Kc = 1.2 * 10-1. At equilibrium at a certain temperature, the concentration of product was 0.60 M.

Water is a colorless and odorless liquid. It can exist in solid, liquid, and gas states. It boils at 100 degrees C and melts at 0 degrees C. Which option best describes this information? A. These are the physical properties of water. B.