2 years ago

How write 5601 in scientific notation

Chemistry

1 answer:

podryga [215]2 years ago

4 0

5.601x10^3
The decimal has to be in front of the first number

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Is Fe a element or a compound?

dmitriy555 [2]

Fe is an element
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sertanlavr [38]

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Given 7.65 mol AgNO3, determine the number of formula units.

Komok [63]

Answer:

The number of formula units of silver nitrate is $4.61\times 10^{24}$ .

Explanation:

Moles of silver nitrate = n = 7.65 mol

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2 years ago

Consider the following reaction: 3Fe(s) + 4H₂O(g) ➞ Fe₃O₄(s) + 4H₂(g). To answer the following question: "How many moles of hot

Elodia [21]

Answer: 2

Explanation:

To calculate the moles :

$\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}$

$\text{Moles of} Fe_3O_4=\frac{275g}{233.5g/mol}=1.18moles$

$3Fe(s)+4H_2O(g)\rightarrow Fe_3O_4(s)+4H_2(g)$

According to stoichiometry :

1 mole of $Fe_3O_4$ are produced by = 4 moles of $H_2O$

Thus 1.18 moles of $Fe_3O_4$ will be produced by= $\frac{4}{1}\times 1.18=4.72moles$ of $H_2O$

Mass of $H_2O=moles\times {\text {Molar mass}}=4.72moles\times 18g/mol=85.0g$

Thus 85.0 g of $H_2O$ will be required and 2 steps are required to get the answer.

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2 years ago