Answer: 1.23 M Ca
Explanation:
Molarity is moles of solute/volume (only liters) of solution
Convert mL to L
To do that divide by 1000
Therefore, 2.34 mol/1.86 L
Answer is 1.23 M Ca
I dont know sorry but good luck i know u can past
V=84.0 mL = 84.0 cm³
m=609.0 g
p=m/v
p=609.0/84.0=7.25 g/cm³
Answer:
That molecule is a propane.
Explanation:
Look at the scheme
H3C --------- ------ H
C
H3C --------- ------- H
C3H8
Ans:
from the product / reactant solution
from the environment when no solution is involved
Endothermic reactions are those reactions that proceed with the absorption of heat energy. In this case, the enthalpy of the reactants i.e. the initial energy is lower than that of the products. Therefore, energy needs to be supplied in order to break the bonds in the reactants and allow the reaction to proceed. This energy can be absorbed either from the environment when no solution is involved or from the product reactant solution.
For example, electrolysis of water which produces H2 and O2 is an endothermic reaction. Here, energy is absorbed by water in the form of electricity (current) to split it into corresponding products.