How much energy would be required to vaporize 45.0 grams of water?

Can someone tell me the Bohr rutherford diagram of atom for calcium

Taken all together the reactions of the human body are A. neutral. B. exothermic. C. endothermic. D. spontaneous.

What is the pH of a 6.4*10-10 m oh - solution?

If you push on a wall with 200n with what forth with the wall push back

Waves transfer A density B energy C heat D matter

Which one is the odd one and why? - type A blood -type A antibodies -AO genotype -A antigen

What is the expected lifespan of a nuclear reactor?

Shawn wants to buy a pair of gloves online. She needs to know the length of her hand in order to choose the correct size. Which Sl unit would be most appropriate for describing the length of her hand? A. Kilograms B. Milliliters C. Kilometers D.

Knowing the reactions between hydrogen gas and oxygen gas to form water is exothermic which would you say is greater: the average bond energies for hydrogen and oxygen or the bond energies for water? Explain.

Why would a C-O bond have only provide 358 kJ/mol each while C=O provides 799 kJ/mol? Explain in detail.