When 3.45 L of a 0.35 M H₃PO₄ to be diluted to a volume of 10.00 L, The concentration of H₃PO₄ resulted is 0.1207 M
The concentration of H₃PO₄ can be calculated as follows:
Dilution is the process of reducing the concentration of a solute in solution, usually by simply mixing the solute with more solvent by adding water to the solution.
The formula (M1V1=M2V2) represents the dilution formula in chemistry.
M1V1=M2V2
3.45 L x 0.35 M = M2 X 10.00 L
M2 = 3.45 L x 0.35 M
10.00 L
M2 = 0.1207 M
Therefore, when 3.45 L of a 0.35 M H₃PO₄ to be diluted to a volume of 10.00 L, The concentration of H₃PO₄ resulted is 0.1207 M
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Two boys, Adam and Bob are pushing a box. They want to move the box to the right. Adam exerts a force of 100 Newtons on the box and Bob exerts a force of 150 Newtons in the same direction.
A. Are the forces working in the same or opposite direction? ___________________
B. Do you add or subtract the forces? ____________________________________
C. What is the combined force (net force) on the box? ________________________
D. Are the forces balanced or unbalanced? ________________________________
A. The forces are working in the same direction.
B. The forces are additive.
C. The combined force on the box is 250 Newtons.
D. The forces are unbalanced.
Net forceThe net force on an object is the resultant force on the object when all the possible forces have been considered.
Forces that act in the same direction are additive in nature while opposing forces are subtractive.
Thus, considering the forces exerted by Adam and Bob on the box, their forces are additive because both are in the same direction. Thus, the total force applied or the combined force on the box can be calculated as;
100 + 150 = 250 Newtons.
Now, the two forces are not applied at the same point on the box and neither are they equal in magnitudes. Bob exerted more force than Adam. Thus, the forces are unbalanced.
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What is the strongest intermolecular force present for each of the following molecules?
A. hydrogen [tex]\left(\mathrm{H}_2\right)[/tex]
B. carbon monoxide (CO)
C. silicon tetrafluoride [tex]\left(\mathrm{SiF}_4\right)[/tex]
D. nitrogen tribromide [tex]\left(\mathrm{NBr}_3\right)[/tex]
E. water [tex]\left(\mathrm{H}_2 \mathrm{O}\right)[/tex]
Answer: Yes, it is true, hydrogen bonding is strongest intermolecular forces compare with all. In case of nh3, (N-H bonds makes between molecules) and dipole dipole interaction (interaction between two dipole) and london dispersion forces occur between nh3 molecules. this types of intermolecular forces are generated between nh3 molecules.
