Answer:
Four different HCl molecules are possible.
- Mass of
= 37 amu - Mass of
= 38 amu - Mass of
= 39 amu - Mass of
= 40 amu
Explanation:
Mass of 2-H isotope = 2 amu
Mass of 3-H isotope = 3 amu
Mass of 35-Cl isotope = 35 amu
Mass of 37-Cl isotope = 37 amu
Different HCl molecules possible are:
1) 
Mass of
= 2 amu + 35 amu = 37 amu
2) 
Mass of
= 3 amu + 35 amu = 38 amu
3) 
Mass of
= 2 amu + 37 amu = 39 amu
4) 
Mass of
= 3 amu + 37 amu = 40 amu
Answer: DNA makes protein molecules to help with almost every cellular process.
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Answer:
0.0375 moles HBr
Explanation:
we are given;
- Molarity of HBr solution as 0.15 M
- Volume of the solution as 250 mL
We are required to determine the number of moles;
We need to know that;
Molarity = Moles ÷ Volume
Therefore;
Moles of HBr = Molarity of HBr solution × Volume of solution
Thus;
Moles of HBr = 0.15 M × 0.25 L
= 0.0375 Moles
Thus, the number of moles of HBr solute is 0.0375 moles