How many atoms are present in 179.0 g of irdium

A sample of SO3 is introduced into an evacuated sealed container and heated to 600 K. The following equilibrium is established: 2SO3 (g) ⇌2SO2 (g) + O2 (g). The total pressure in the system is found to be 3.0 atm and the mole fraction of O2 is 0.12.

Which planet has a very dense atmosphere primarily composed of carbon dioxide making it the hottest planet a. Venus b. Uranus c. Jupiter d. earth

If the EMF produced in a wire is 0.88 volts and the wire moves perpendicular to a magnetic field of strength 0.075 newtons/amp·meter at a speed of 4.20 meters/second, what is the length of the wire in the magnetic field? a. 0.27 meters b. 2.

An initial 25.00 mL solution of nitric acid (HNO3) was diluted to 250.00 mL, and15.00 mL of this diluted solution was titrated with a 0.2244 M solution of sodium hydroxide. If 21.

Which of the following would have to gain two electrons in order to achieve a noble gas electron configuration? O Sr Na Se Br

8. What is an energy level? A) The region outside the nucleus where the neutron is likely to be moving. B) The region outside the nucleus where the electron is likely to be moving.

In alpha decay, alpha particles are ejected from the nucleus. Which equation represents alpha decay? 241Am 23Np + 4He 18F → 180 + °C 14C → 14N+_e 152 Dy → 15. Dy+y

In a study of the conversion of methane to other fuels, a chemical engineer mixes gaseous methane and gaseous water in a 0.778 L flask at 1,072 K. At equilibrium, the flask contains 0.206 mol of CO gas, 0.187 mol of H2 gas, and 0.187 mol of methane.

Heat is defined as the ...

The liquid substances mercury (density = 13.6 g/ml), water (1.00 g/ml), and cyclohexane (0.778 g/ml) do not form a solution when mixed, but separate in distinct layers. list how the liquids would position themselves in a test tube.