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ollegr [7]
3 years ago
15

Define the following terms . 1. Element 2. Mixture 3. Compound ​

Chemistry
1 answer:
icang [17]3 years ago
4 0
1- Fundamental materials of any matter
2- a material made up of two or more different substances
3- something composed of two or more separate elements
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6. The nuclear reaction where Si-30 becomes P-30 is
Arisa [49]

Answer:c

Explanation:

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3 years ago
How many grams are in 4.00 moles of Cr2O3?
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607.9616 grams

Explanation:

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8 0
2 years ago
An aqueous solution is listed as being 33.8% solute by mass with a density of 1.15 g/mL, the molar mass of the solute is 145.6 g
vodomira [7]

Answer:

A) 2.69 M

B) 0.059

Explanation:

A) We have:

33.8% solute by mass= 33.8 g solute/100 g solution

molarity = mol solute/ 1 L solution

molarity= \frac{33.8 g solute}{100 g solution} x \frac{1.15 g solution}{1 ml} x \frac{1 mol solute}{145.6 g solute} x \frac{1000 ml}{1 L}

molarity= 2.69 mol solute/L solution = 2.69 M

B) We know that there are 33.8 g of solute in 100 g of solution.

As the total solution is compounded by solute+solvent (in this case, solvent is water), the mass of water is the difference between the mass of the total solution and the mass of solute:

mass of water= 100 g - 33.8 g = 66.2 g

Now, we calculate the number of mol of both solute and water:

mol solute= 33.8 g solute x \frac{1 mol solute}{145.6 g} = 0.232 mol

mol H20= 66.2 g H₂O x \frac{1 mol H2O}{18 g}

Finally, the mol fraction of solute (Xsolute) is calculated as follows:

Xsolute=\frac{mol solute}{total mol}= \frac{mol solute}{mol solute + mol H2O}=\frac{0.232 mol}{0.232 mol + 3.677 mol}

Xsolute= 0.059

4 0
2 years ago
What is the symbol for hydrogen
Kazeer [188]
The symbol for hydrogen is H
3 0
3 years ago
2 days Claire went missing, the body of a young girl was found in an abandoned building. There were 2 blowfly larvae on the body
KengaRu [80]

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Yes it is possible that the body might be Claire's

Explanation:

It is possible because the scenario says that it had similar appearances that Claire had

8 0
3 years ago
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