The half-life of carbon-14 is 5730 years. a sample is found to have one-eighth the original amount of carbon-14 in it. how old is the sample?

When two clear, colourless liquids are mixed together, a yellow precipitate is formed. This is an example of a

If you react 300 molecules of hydrogen and 200 molecules of oxygen, how many oxygen molecules will you have that do not engage in the reaction

How much energy is required to remove the most loosely bound electron from a neutral atom of carbon in the gaseous phase?

Which would be the more valued result: taking one proton from each nucleus in a sample of gold or adding one proton to each gold nucleus? 1. adding one proton to each gold nucleus 2. equally valuable 3. taking one proton from each gold nucleus 4.

How many moles are in 2.58 x 10^24 atoms of calcium?

What effect can new observations have on a scientific theory

The total number of valence electrons in the phosphate ion is

The reaction below has an equilibrium constant kp=2.2*106 at 298 k. 2cof2 (g) ⇌co2 (g) + cf4 (g) calculate kp for the reaction below. cof2 (g) ⇌12co2 (g) + 12cf4 (g)

The electrical conductivities of the following 0.100 M solutions were measured in an apparatus that contained a light bulb as the indicator of conductivity. Rank the solutions in order of decreasing intensity (brightest to dimmest) of the light bulb.

What is the name of a list of elements arranged according to the ease with which they undergo certain chemical reactions?