- Endothermic reaction : so the energy of product is higher than the energy of reactant.
- Catalyst lowers the activation energy so it increase the rate of reaction.
- The graph is attached:
Which best compares 1 mol of sodium chloride to 1 mol of aluminum chloride?
A. Both have the same molar mass.
B. Both have the same number of ions.
C. Both are made up of 6.02 mc014-1 1023 molecules.
D. Both are made up of 6.02 mc014-2 1023 formula units.
The correct answer on E.D.G is ---Both are made up of 6.02 mc014-2 1023 formula units. D
He should buy the sander in store, this way it will be available for when he needs it.
Mass is the amount of matter in an object. Density is the degree of compactness of a substance
Answer:
V = 1.95 L.
Explanation:
Hell there!
In this case, according to the following reaction between sodium metal and water:
We can realize that the moles of hydrogen can be calculated by using the initial mass of sodium, its atomic mass (23.0 g/mol) and the 2:1 mole ratio of sodium to hydrogen to obtain:
Finally, we calculate the volume of hydrogen by using the ideal gas equation whereas the pressure is 1 atm and the temperature 273.15 K according to the STP conditions:
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