A water sample has a mass of 25.0 g. It contains 1.56 × 10–5 g NaCl. What is the best set up to find ppm?

ppm = mol solute/mass solution × 106

ppm = mass solute/mass solution × 106

ppm = mol solute/mass solvent

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

What type of chemical bond is formed between two atoms of bromine 1. metallic 2. hydrogen 3. ionic 4. covalent