Answer:
Over a vast amount of time, millions of years, the earth gradually cooled. When the temperature dropped enough, water vapor condensed and went from a gas to liquid form. This created clouds. From these clouds, the oceans formed and the oceans absorbed a lot of the carbon dioxide in the atmosphere.
Explanation:
Is molecule an answer? It wouldn't let me see all the answers. if it is, molecule is the correct answer. they are held together by a covalent bond, I believe.
Well, since ammonia has the chemical formula NH3. Therefore the
relative atomic mass is 17 (14+(1)3). So 100 divided by 17, times 3
= 17.64705882352941g. I did this in order to figure out firstly,
how much the weight of 1 of the 17 nuclear particles, which make up
ammonia, would have to be present (in grams) for everything to be
in proportion to which would make 100g. Then by timesing it by 3
shows how much the 3 hydrogen atoms contributed in weight towards
the 100 grams. To prove that 17.64... is correct you can add
(100/(17) X (17-3).
It takes roughly 4.18 Joules of energy to increase the temperature of 1g of H20 by 1 degree C.
Answer:
c. low, positive or slightly negative
Explanation:
Elements with low first ionization energies and positive or slightly negative electron affinities, generally form cations. Metals are less likely to gain electrons, but can easily lose their valence electrons to form cations. This means the ionization energy, which is the energy required to remove loosely bound electrons is low. For a metal to gain an electron, an endothermic reaction occurs, and since the pull by the nucleus on electrons is low, it means metals have a low electron affinity.