I need help please, will give 5 stars

Fusion and fission reactions are both nuclear reactions that can be used to produce energy. However, while fission reactions are

kipiarov [429]

Answer:

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Explanation:

3 0

3 years ago

What happens to the molecules of water when the water changes from liquid to gas?.

ICE Princess25 [194]

Answer: Molecules only speed up when given energy, such as heating. When you heat water enough, it will boil and turn into water vapor. So, therefore, if water's molecules speed up, it will go into the gas phase

Explanation: As that liquid water is further heated, it evaporates and becomes a gas—water vapor. These changes between states (melting, freezing, and evaporating) happen because as the temperature either increases or decreases, the molecules in a substance begin to speed up or slow down.

Hope this helps! ^w^

3 0

2 years ago

In a laboratory experiment the reaction of 3.0 mol of H2 with 2.0 mol of I2 produced 1.0 mole of HI. Determine theoratical yield

Kobotan [32]

Answer:

Theoretical yield of HI is 512 g.

The percent yield for this reaction is 25%.

Explanation:

$H_2+I_2\rightarrow 2HI$

Moles of hydrogen gas = 3.0 moles

Moles of iodine gas = 2.0 moles

According to reaction 1 mol of hydrogen gas reacts with 1 mol of iodine gas.

Then 3.0 moles of hydrogen gas reacts with 3.0 mol of iodine gas. But there are 2.0 moles of iodine gas. Hence,Iodine is a limiting reagent. The production of HI will depend upon iodine gas moles.

According to reaction , 1 mol of iodine gas gives 2 moles of HI.

Then 2 moles of iodine gas will give:

$\frac{2}{1}\times 2 mol=2 mol$ of HI

Theoretically we will get 4 moles of HI.

Theoretical yield of HI = 4 mol × 128 g/mol= 512 g

Experimental yield of HI = 1.0 mol

= 1 mol × 128 g/mol= 128 g

$\%yield=\frac{\text{Experimental yield}}{\text{Theoretical yield}} \times 100$

$\%yield=\frac{128 g}{512 g}\times 100=25\%$

The percent yield for this reaction is 25%.

6 0

3 years ago

To get a 4 suggest a way to improve the accuracy or precision of the finding<br> .

elixir [45]

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

3 0

3 years ago

Identify the acids and the bases in the chemical equation.

DiKsa [7]

Answer:

Acids: $HCl, C_5H_5NH^+$

Bases: $C_5H_5N, Cl^-$

Explanation:

According to the Bronsted-Lowry acid-base theory, an acid is a proton donor and a base is a proton acceptor. In this case, notice that $HCl$ donates a proton, since after it loses a proton, it becomes a chloride anion. Therefore, $HCl$ is a Bronsted acid.

Similarly, $C_5H_5N$ is a proton acceptor and, therefore, a Bronsted base, since it becomes $C_5H_5NH^+$ .

If we look at the reverse reaction, chloride can gain a proton to become $HCl$ , meaning it's a conjugate base.

Finally, $C_5H_5NH^+$ is a conjugate acid, since it can donate a proton to chloride.

7 0

3 years ago