Explain why the feeling of weightlessness in free fall is not the same as truly being weightless.

What do you mean by alkali metal

Which of the following characteristics describes aerobic organisms. 1) Not very active, efficient use of energy 2) Not very active, inefficient use of energy 3) Very active, efficient use of energy 4) Very active, inefficient use of energy

Criteria: If a metal has a specific heat, then the metal could make an excellent material for cookware because

A sample of water with a mass of 123.00 kg is heated from 25 C to 97 C. If the specific heat of water is 1 J-1 kg K-1 then how much energy is required?

Which of these traits does not cause a change in the reaction rate? A. density B. temperature C. concentration D. particle size

What is the mass in grams of 5.00moles of CH4? How many moles of oxygen gas O2, are present in a 38g sample of O2

25 In general, for a gas at a constant pressure, A the temperature of the gas is inversely proportional to its volume B. the temperature of the gas is inversely proportional to its pressure C.

The vapor pressure of ethanol is 54.68 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin. Calculate the vapor pressure of the solution at 25 °C when 8.054 grams of saccharin, C7H5NO3S (183.

What do microscopic producers supply the atmosphere with?

A particular form of electromagnetic radiation has a frequency of 8.11 x 10^14 hz. What is the energy in joules of one quantum of this radiation?