The mass numbers for two isotopes are unequal because they have different numbers of
2 answers:
<u>Answer:</u> It is so because they have different number of neutrons.
<u>Explanation:</u>
Isotopes are defined as the chemical species which have same number of protons but differ in the number of neutrons.
They have same atomic number but different atomic mass.
<u>For Example:</u> are the three isotopes of carbon.
The number of protons in all the three isotopes is same which is 6 and the number of neutrons in the three isotopes are 6, 7 and 8 respectively.
Hence, it is so because they have different number of neutrons.
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Answer:
Explanation:
Molarity is found by dividing the moles of solute by liters of solution.
We know the molarity is 1.2 M (mol\liter) and there are 2.3 liters of solution. Substitute the known values into the formula.
Since we are solving for x, we must isolate the variable. It is being divided by 2.3 and the inverse of division is multiplication. Multiply both sides by 2.3 liters.
In a solution with a molarity of 1.2 and 2.3 liters of solution, there are 2.76 moles.