For heavy elements what is the ratio of neutrons to protons that predicts a stable nucleus?

Ethane, a minority component of natural gas, burns to form carbon dioxide and water according to this reaction: 2H3C-CH3 (g) + 7O2 (g) →4CO2 (g) + 6H2O (g) Note that the average bond energy for the breaking of a bond in CO2 is 799 kJ/mol.

Why is it more difficult to measure the temperature of a solid than a liquid

The recommended daily calcium I take for a woman over 50 years of age is 1200 mg. if one cup of milk has 306mg of Calcium how many cups of milk provide this amount of Calcium? how many milliliters of milk does this correspond to

How do simple distillation and fractional distillation differ?

What is the ratio of Al ions to S ions in a neutral compound? 1:1 2:1 2:3 3:2

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Determine the number of grams of NaCl necessary to make up 100 mL of a 0.10 M solution. 0.017 g 0.58 g 1.7 g 58 g

What causes an increase in the average global temperature?

Which of the following is true regarding nuclear fission and nuclear fusion? A. Both of these processes can provide energy. B. Our sun's heat is an example of both of these processes. C. Both of these processes are equally complex to control. D.

It takes 5.2 minutes for a 4.0 g sample of francium-210 to decay until only 1.0 g is left. What is the half-life of francium-210? 7.8 minutes 1.3 minutes 2.6 minutes 5.2 minutes