The molar mass of NaOH is 40 g/mol.
The number of moles of NaOH is equal to the ratio of its mass to molar mass.
The number of moles of NaOH =
40g/mol
40g
=1mol
The molarity of NaOH solution is the ratio of number of moles of NaOH to total volume of solution in L.
M=
1L
1mol
=1M
Answer:
Convection
Explanation:
Hot water will rise due to heat transfer by convection occurring in the heating system.
- When a fluid is heated, the molecules will gain thermal energy.
- As the thermal energy of the liquid increases, the molecules will have heat which is average kinetic energy in the system.
- This causes them to be less denser and they rise in the cooking medium.
- As they rise, the colder part of the water sinks down to replace them in the pot.
- This exchange sets up convection cells in the heating medium.
Answer D, aluminum, because the other choices are elements.
The energy of the carbide released is 7262.5MJ.
<h3>What is the energy?</h3>
We know that the reaction between calcium oxide and carbon occurs in accordance with the reaction; . The reaction is seen to produce 464.8kJ of energy per mole of carbide produced.
Number of moles of produced = 1000 * 10^3 g/64 g/mol
= 15625 moles of calcium carbide
If 1 mole of transfers 464.8 * 10^3 J
15625 moles of calcium carbide transfers 15625 moles * 464.8 * 10^3 J/ 1 mol
= 7262.5MJ
Learn more about reaction enthalpy:brainly.com/question/1657608
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Answer:
Prokaryotes is the answer
hope it helped