Answer:
9.7 × 10² g NaF.
Explanation:
Molarity is defined by the amount of solute (mols) over the volume of solution (liters):
We want to create 6.3 liters of a 3.6 molar solution of NaF.
Solve for the amount of NaF necessary:
Therefore, about 23 moles of NaF is required.
Convert from moles to grams. The molecular weight of NaF is 41.99 g/mol:
Therefore, about 970 grams of NaF is needed to create the solution.
Answer:
They are pollinators of alfalfa.
Explanation:
Without them crops wouldn't be here.
Answer:
The relative strength of the four intermolecular forces is: Ionic > Hydrogen bonding > dipole dipole > Van der Waals dispersion forces. ...
Boiling points increase as the number of carbons is increased.
Branching decreases boiling point.
Explanation:
Answer:
A is an endothermic reaction.
Explanation:
When energy of breaking bonds is greater than the energy released during making of bonds, we need to supply energy to the reaction and thus the reaction is called as endothermic reaction. We can also say that the enthalpy of formation of products is more than the enthalpy of formation of reactants making overall enthalpy change to be positive.
While in case B, the energy to break bond is less than the energy released during making of bonds. thus there is overall released of energy during the reaction and hence it is exothermic reaction.
