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dsp73
3 years ago
9

How to balance reaction equations

Chemistry
1 answer:
spayn [35]3 years ago
7 0
They will become unequivalent

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My sporty mini van needs 19,126 kJ of energy in order to pass a fast moving street sweeper on the road. Using the following equa
nika2105 [10]

Answer:

m=397.6gC_8H_{18}}

Explanation:

Hello there!

In this case, according to the given chemical reaction, we can set up the heat of reaction per mole of gasoline as shown below:

\Delta H=\frac{-10,990kJ}{2molC_8H_{18}}=-5495\frac{kJ}{molC_8H_{18}}

Now, since the total heat is obtained by multiplying the moles and heat of reaction, we can calculate the moles as shown below:

n=\frac{Q}{-\Delta H } \\\\n=\frac{19,126kJ}{-(-5495\frac{kJ}{molC_8H_{18}} )} \\\\n=3.48molC_8H_{18}}

Finally, since the molar mass of gasoline is 114.22 g/mol, we can easily calculate the mass as follows:

m=3.48molC_8H_{18}} *\frac{114.22gC_8H_{18} }{1molmolC_8H_{18}} } \\\\m=397.6gC_8H_{18}}

Best regards!

8 0
3 years ago
Does a melted iceberg increase the salinity of the ocean?
antiseptic1488 [7]
Dedpool here!

no it doesn't

hope this helps

7 0
4 years ago
Read 2 more answers
HELP! THIS IS SCIENCE
Alexxx [7]
This is known as Rutherford's gold foil experiment. To align with J.J Thompson's Plum Pudding Model, he expects a beam of alpha particles to just pass through the gold foil undisturbed. However, some were deflected at certain angles. Alpha particles are positive, so it would just go straight through the nucleus, but will deflect if it hits the electrons. <em>Therefore, the answer is: </em><span><em>Particles that struck the nucleus went straight.</em></span>
7 0
4 years ago
Read 2 more answers
Consider the reaction below.
patriot [66]

Answer:

HI and I-

Explanation:

Hello there!

In this case, according to the acid ionization of hydroiodic acid:

HI+H_2O\rightarrow I^-+H_3O^+

Now, since the acid, HI, results in the conjugate base, I- and the base, H2O in the conjugate acid, H3O+, it is correct to assert that the acid-conjugate base pair is HI and I-

Best regards!

6 0
3 years ago
Is the following equation balanced? FeCl₃ + MgO → Fe₂O₃ + MgCl₂<br> A.<br> Yes<br> B.<br> No
VARVARA [1.3K]

Answer:

The answer is B) No.

Explanation:

The equation balanced is:

2 FeCl₃ + 3 MgO → Fe₂O₃ + 3 MgCl₂

Equation balancing can be done by "trial and error" or by algebraic method.

In this way the equation is balanced on both sides having:

2 atoms of Fe, 6 of Cl, 3 of Mg and 3 of 0.

4 0
3 years ago
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