Which would be the most reliable source for information about the toxicity of an industrial chemical? a webpage on the internet with no sources listed

a brochure by a company that produces the chemical

a scientific journal article that is peer–reviewed

an opinion expressed by a chemistry professor

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)

Write down two additional questions about earth's magnetic field that will make your presentation more informative.