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padilas [110]
3 years ago
6

Energy is released when the nucleus of an atom splits and two smaller atoms are formed. What is the name of this process?

Chemistry
1 answer:
Svetllana [295]3 years ago
5 0

Explanation:

It's (D), nuclear fission................

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Express the rate of the reaction in terms of the change in concentration of each of the reactants and products.
weeeeeb [17]

Answer:

c. rate=−1/2Δ[HBr]/Δt=Δ[H2]/Δt=Δ[Br2]/Δt

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

2HBr(g)\rightarrow H_2(g)+Br_2(g)

Thus, the rate is given as:

rate=-\frac{1}{2} \frac{\Delta [HBr]}{\Delta t}=\frac{\Delta [Br_2]}{\Delta t} =\frac{\Delta [H_2]}{\Delta t}

It is necessary to remember that each concentration to time interval is divided into the stoichiometric coefficient, that is why HBr has a 1/2. Moreover, the concentration HBr is negative since it is a reactant and it has a negative rate due to its consumption.

Therefore, the answer is:

c. rate=−1/2Δ[HBr]/Δt=Δ[H2]/Δt=Δ[Br2]/Δt

Best regards.

4 0
3 years ago
How do you find the percent yield of a chemical reaction?
kotegsom [21]
To express the efficiency of a reaction, you can calculate the percent yield using this formula: %yield = (actual yield/theoretical yield) x 100. A percent yield of 90% means the reaction was 90% efficient, and 10% of the materials were wasted (they failed to react, or their products were not
8 0
3 years ago
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How many moles of h2o will be produced from 2.9 g of HCl reacting with Ca(OH)2?
Igoryamba

Answer:

0.080 mol

Explanation:

 M(HCl) = (1.0 +35.5) g/mol = 36.5 g/mol

2.9g*1mol/36.5 g = 0.0795 mol HCl

                              Ca(OH)2 + 2HCl ---> CaCl2 + 2H2O

from reaction                            2 mol                   2 mol

given                                       0.0795 mol           x mol

x = 0.0795 mol ≈0.080 mol

7 0
3 years ago
Will a sample float in water that has a mass of 64 g and a volume of 66 mL
grin007 [14]
<span>Things float in water if their density is less than the density of water so yes

</span>
8 0
3 years ago
Calculate the gas constant, R, if 25.55 mL of hydrogen gas was collected at a barometric pressure of 0.987 atm and a temperature
gtnhenbr [62]

Answer:

354.09

Explanation:

6 0
3 years ago
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