what did you notice about the way the soil particles sank in the water? how was it different from the way the soil and sand particles sank?
what does the soil look like in the "soil" bottle? how is it different from the soil in the "soil and sand" bottle?
in the "soil and sand" bottle, which type of soil is on the bottom? why?
the amount of each size particle in soil is the particle size distribution. do you think this is a good way to determine particle size distribution? why or why not?

i need asap! i don't know how to answer the questions because i messed up the "soil" bottle and it is due today.

What is the molality of a solution that has 4 mol of kci in 0.800 kg of water

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

Listenbase your answer to the question on the information below. nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body. cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment. which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61