True in a evolutionary sense
Answer:
The difference between liquid nitrogen and nitrogen gas is liquid nitrogen gas is man made or caused by humans but, nitrogen gas takes place naturally in the earths atmosphere.
Explanation:
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This is the full question
What is true when an ion is formed?
A There is an unequal number of electrons and neutrons.
B There is an unequal number of electrons and protons.
C The atom loses one or more protons.
D The atom loses one or more neutrons.
Answer:
B There is an unequal number of electrons and protons.
Explanation:
There are two kinds of ion, cation, and anion. Cathion is when an atom loses electrons, which makes it have more proton than the electron. This makes the charge positive. Anion is the opposite of cathion. It's formed when an atom receives electron, thus making its charge negative. Because of this, there is no ion that has equal electron and protons.
<em>A seismologist is a scientist who does research in </em><span><em>seismology or history Which is same as <u>Geoscience</u>.</em></span><em></em>
Answer:
Moles
Explanation:
Mole is used to describes the amount of matter. The one mole of every substance have different mass, because every matter has different mass. The one mole of substance is equal to the molar mass of that substance.
The molar mass of substance is the mass in gram in one mole and it is represented by g/mol.
For example:
The molar mass of oxygen is 16 g/mol. If we take 16 g of oxygen we would say we taken one mole of oxygen. If we take 32 g of oxygen than it is describe as two mole of oxygen.
Consider the following reaction:
2H₂ + O₂ → 2H₂O
In this reaction two mole of hydrogen gas combine with one mole of oxygen and produce two moles of water.