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2 years ago

Can someone please give me a very simple definition of nuclear fusion make it as simple as possible

1 answer:

3 0

Answer: Nuclear fusion is a nuclear reaction where atomic nuclei of a low atomic number fuse to form a heavier nucleus releasing energy.

Explanation:

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A neutral atom has the same number of _____ in it’s nucleus as____ in its electron cloud

rusak2 [61]

Answer:

the neutul atom has the same number of protons in its neclues as positive in its electron cloud#

Explanation:

8 0

2 years ago

I will mark brainlist if correct !! :) PLS HELPPP

Soloha48 [4]

<h2>Answer: Option B</h2>

Option A is incorrect. Heated water cannot freeze.

Option B is correct. Heated water will evaporate.

Option C is incorrect. Heated water cannot create condensation.

Option D is incorrect. Water can't melt when heated unless it's been frozen beforehand.

6 0

2 years ago

What is avogadros number

Ad libitum [116K]

6.022*10^23 is the number

5 0

2 years ago

When 1 mol each of C2H5OH and CH3CO2H are allowed to react in 1 L of the solvent dioxane, equilibrium is established when 13 mol

taurus [48]

Answer:

Keq = 4

Explanation:

The correct statement is:

When 1 mol each of C₂H₅OH and CH₃CO₂H are allowed to react in 1 L of the solvent dioxane, equilibrium is established when 1/3 mol of each of the reactants remains. Calculate the equilibrium constant for the reaction. (Note: Water is a solute in this reaction.)

1. Equilibrium equation

C₂H₅OH + CH₃CO₂H ⇄ CH₃CO₂C₂H₅ + H₂O

↑ ↑ ↑ ↑

ethanol acetic acid ethyl acetate water

2. Equilibrium constant

Keq = [Products] / [Reactants], each raised to tis stoichiometrical coefficient.

Since water is also a solute in this reaction (the solvent is dioxane) its concentration will appear in the equilibrium constant.

$Keq=\frac{[CH_3CO_2C_2H_5]\cdot [H_2O]}{[C_2H_5OH]\cdot [CH_3CO_2H]}$

3. Equlibrium concentrations:

Moles

C₂H₅OH + CH₃CO₂H ⇄ CH₃CO₂C₂H₅ + H₂O

Initial 1 1 0 0

Change -2/3 -2/3 +2/3 +2/3

End 1/3 1/3 2/3 2/3

Since the volume is 1 liter, the concentration is equal to the number of moles

4. Calculations:

$Keq=\frac{[CH_3CO_2C_2H_5]\cdot [H_2O]}{[C_2H_5OH]\cdot [CH_3CO_2H]}=\frac{2/3\cdot 2/3}{1/3\cdot 1/3}=4$

4 0

2 years ago

Calculate the molarity of a solution made by adding 35.0 mL of concentrated perchloric acid (70.5 % by mass, density 1.67 g/mL)

Nata [24]

Molarity is equal to the number of moles of solute per liter solution.

number of moles solute: (molar mass of perchloric acid is 100.45 g/mol)
35.0 mL * (1.67 g/mL) *0.705 * (mol/100.45 g) = 0.41 moles
liter solution = 2000 ml * (1 L/1000 ml) = 2 L

molarity is equal to 0.41 moles/ 2 L =0.205 M

5 0

2 years ago

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