Answer:
it formed by nature and God, more specifcally, weather
Explanation:
B is the answer. It just depends on the area you are in.
<span>0.38
You first calculate the total moles by dividing the grams by molecular weight:
45 g N2 / 28.02 g/mol = 1.6 mol N2
40 g Ar / 39.95 g/mol = 1.0 mol
Then you divide the moles of Ar by the total number of moles:
1.0 / (1.6 + 1.0) = 0.38 mol fraction</span>
The illustration would be that of a double replacement reaction.
<h3>What are double replacement reactions?</h3>
They are reactions in which 2 ionic compounds exchange ions to form two new products.
Thus, in the reaction: ab + cd ----------> ad + cb
ab and cd are two ionic compounds. The b in ab is replaced by the d in cd while the d in cd itself is replaced by the b in ab. Hence, new products, ad and cd, are formed.
More on double replacement reactions can be found here: brainly.com/question/19267538
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Answer : There are 44 protons and 62 neutrons in Ru-106 nucleus.
Explanation:
For ruthenium , the atomic number is 44 and mass number is given to be 106.
Atomic number is defined as the number of protons or number of electrons that are present in an atom.
Atomic number = Number of electrons = Number of proton
44 = number of protons
Mass number = Number of protons + Number of neutrons
106 = 44 + Number of neutrons
(106-44) = 62 = Number of neutrons
Thus there are 44 protons and 62 neutrons in Ru-106 nucleus.