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FinnZ [79.3K]
3 years ago
7

an ion m3+ contain 10 electron and 14 neutron. what are the atomic number and mass number of the element M​

Chemistry
1 answer:
julia-pushkina [17]3 years ago
6 0

Explanation:

Atomic number = number of electrons = 10

Mass number = number of electrons + number of neutrons = 10 + 14 = 24

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Answer:

10B has 18.9%

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4 0
3 years ago
PLEASE HELP I NEED IT!!!!!
galina1969 [7]
Answer:
Molarity = 2.3 M

Explanation:
Molarity can be calculated using the following rule:
Molarity = number of moles of solute / volume of solution

1- getting the number of moles:
We are given that:
mass of solute = 105.96 grams
From the periodic table:
atomic mass of carbon = 12 grams
atomic mass of hydrogen = 1 gram
atomic mass of oxygen = 16 grams
Therefore:
molar mass of C2H6O = 2(12) + 6(1) + 16 = 46 grams
Now, we can get the number of moles as follows:
number of moles = mass / molar mass = 105.96 / 46 = 2.3 moles

2- The volume of solution is given = 1 liter

3- getting the molarity:
molarity = number of moles of solute / volume of solution
molarity = 2.3 / 1
molarity = 2.3 M

Hope this helps :)
8 0
3 years ago
A scientist notices that a lump of niobium is warm to the touch and wonders if nuclear reactions are taking place in the metal.
Sedaia [141]
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Gold is used for making ornaments give reason <br><br>​
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Answer:

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brainliest pls....

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3 years ago
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