Answer:
C) the relative number of moles taking part in the reaction
Explanation:
From a balanced chemical equation, it is always possible to determine the relative number of moles taking part in a chemical reaction.
The number of moles is the amount of the reacting specie that makes up a chemical reaction.
- In balanced chemical equation, the number of moles of reactants and products must be the same.
- From this understanding, we can determine the amount of reactants and products needed for a chemical reaction to take place.
Answer:
She should use 0.75 mol.
Explanation:
By definition, molarity (M) is the <u>number of moles of solute per liter of solution</u>. One liter of solution is equal to 1000 mL.
Therefore,
1000 mL -------- 1.5 moles of NaCl
500 mL --------- x= 0.75 moles of NaCl
The moles contained in 500 mL of a 1.5 M NaCl solution are 0.75.
Answer:
5.01 L
Explanation:
my guy i just took the test, it was this one
The minus sign in ' –285.8 kJ/mol' indicates that the formation of water is an exothermic process. In an exothermic process heat is released by the system.
On the contrary, a positive value of the heat of formation indicates that the process is endothermic. In an endothermic process heat is absorbed by the system.
