The number following the name of the element is the number of subatomic particles inside the nucleus of the atom. This means that it is the mass number of the isotope. The average atomic mass of the element is the sum of the products of the percentage abundance and mass number of the naturally occurring isotopes.
Since, the average atomic mass of the hydrogen is nearest to 1 then, the most abundant isotope should be hydrogen-1.
Answer:
i think option d
Explanation:
isoelectronic spcies don't have same no. of protons so the nuclear force is not equal
Answer:
The attached image should be your answer for the Lewis Structure of COS
Explanation:
Answer:
CaCl2(aq) + Na2CO3(aq) → CaCO3(s) + 2NaCl(aq)
Reference:
H.W. Hanna and A. Dittmar; Laboratory Manual for General Chemistry, 4th ed.; Morton Publishing Company, Denver, Colorado
Molarity is defined as the number of moles of solute in 1 L of the solution
In this instance a certain volume is taken from the given solution with molarity of 0.0400 M and diluted. Then the moles of solute is dissolved in a larger volume of water and concentration becomes lesser in other words it’s diluted
Number of moles of solute in 2.00 mL needs to be calculated
Number of solute moles in 1000 mL - 0.0400 mol
Then number of moles in 2.00 mL - 0.0400 mol / 1000 mL x 2.00 mL = 0.0000800 mol
Number of moles of solute added = 0.0000800 mol