All the following conditions must be present for a fire to start except A. nitrogen to support the fire. B. a heat source (such as a spark). C. fuel (such as wood or gasoline). D. oxygen to support the fire.

What is the potential of a cell made up of zn / zn2 + and cu / cu2 + half-cells at 25°c if [zn2+] = 0.31 m and [cu2+] = 0.81 m?

What is the temperature of 0.257 mol of O2 occupying 6.78 L at 0.856 atm?

What is the difference between acute and chronic radiation poisoning

Boyle's law states that the volume of a gas is inversely proportional to its pressure if the A. temperature and number of particles are constant. B. temperature reaches absolute zero. C. number of particles decreases. D.

A copper (cu) atom has 29 neutrons, 29 protons, and 29 electrons. What is the overall charge of the copper atom?

What was venter's comtributionto science?

How many atoms are in 151 g of calcium?

Which statements about the formation of the solar system are true and in a correct order? A. A black hole collapsed to form the sun; small planetary objects formed; small planetary objects collided with each other to form larger objects. B.

Which is an important step in the alternate method for balancing equations in redox reactions? a) indicating the types of bonds found in the molecules. b) determining the speed at which reactions take place.

How many moles of NH3 can be produced from 24.0 mol of H2 and excess N2