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Harlamova29_29 [7]
3 years ago
10

What is a prediction?

Chemistry
2 answers:
Arisa [49]3 years ago
4 0
Something foretold, for example: Jacob's prediction proved true.<span>
</span>
aalyn [17]3 years ago
3 0
A prediction is a guess of something that could happen in the future

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The following two reactions are important in the blast furnace production of iron metal from iron ore (Fe2O3):2C(s) + O2(g) -&gt
Inga [223]

Answer: A) 67.1 moles

Explanation:

The balanced reaction is :

2C(s)+O_2(g)\rightarrow 2CO(g)

Fe_2O_3+3CO(g)\rightarrow 2Fe+3CO_2

To calculate the moles, we use the equation:

\text{Number of moles of iron}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{5.00\times 1000g}{56g/mol}=89.3moles

According to stoichiometry;

2 moles of iron is produced by 3 moles of carbon monoxide

89.3 moles of iron is produced by=\frac{3}{2}\times 89.3=134 moles of carbon monoxide

2 moles of carbon monoxide is produced by = 1 mole of oxygen

Thus 134 moles of carbon monoxide is produced by = \frac{1}{2}\times 134=67.1 moles of oxygen

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3 years ago
How to solve x² in differential​
g100num [7]

Answer:

x² = mutiphy by them self

Explanation:

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3 years ago
Whetes the most of the mass of our solar system today
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Planets, black wholes gravity
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3 years ago
Which statements describe how traits are inherited? Check all that apply.
Varvara68 [4.7K]

Answer:

C

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Alleles being more minute than genes,can pass on trait similar or different

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3 years ago
A student is adding DI water to a volumetric flask to make a 50% solution. Unfortunately, he was not paying attention and filled
dalvyx [7]

Answer:

His results will be skewed because there was more water than stock solution. Which would cause the percentage solution to be less than 50% therefore the density would be less than the actual value.

Explanation:

The solution will have percentage less than that of 50%. Therefore the density would be less than the actual value.

Suppose there should be 50 mL of the solution, and he added 60 mL. So 10 mL of the solution is added more.

Suppose the mass of the solute is m.

Originally, the density is = $\frac{m}{50}$     \left(\frac{\text{mass}}{\text{volume}}\right)

Now after adding extra 10 mL , the density becomes $\frac{m}{60}$.

Therefore, $\frac{m}{50}>\frac{m}{60}$

So the density decreases when we add more solution.

4 0
3 years ago
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