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3 years ago

What is the concentration of a solution?

Chemistry

1 answer:

Nimfa-mama [501]3 years ago

8 0

The concentration of a substance is the quantity of solute present in a given quantity of solution.

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A susbtance has an empirical formula of CrO2 and a molecular weight of 168 g/mol. determine the molecualr formula for this subst

Sunny_sXe [5.5K]

Answer:

$Cr_{2} O_{4}$

Explanation:

$\frac{molecular weight}{molar mass}$ = $\frac{168}{83.99}$ = 2.00

$CrO_{2}$ x 2 = $Cr_{2} O_{4}$

3 0

2 years ago

Explain how you would determine the volume of a powdered solid, a liquid, and a rock

siniylev [52]

To determine the volume you would need to find the density and mass of each.

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3 years ago

Read 2 more answers

Which of the following is equal to 5.3 mm3? 5.3 x 10-6 m3 5.3 x 10-9 m3 5.3 x 10-6 cm3 5.3 x 103 cm3

Shalnov [3]

The answer to this item is determined by using the proper conversion factors and the dimensional analysis. For the given units, meter and centimeters, the conversion from millimeters are as shown below,

1 m = 1000 mm
1 cm = 10 mm

Conversion of 5.3 mm³ to m³.

= (5.3 mm³)(1 m/1000 mm)³ = 5.3 x 10⁻⁹ m³

Conversion of 5.3 mm³ to cm³.

= (5.3 mm³)(1 cm/10 mm)³ = 5.3 x 10⁻³ cm³

The answer to this item is therefore letter B. 5.3 x 10⁻⁹ m³.

3 0

3 years ago

A compound containing only carbon, hydrogen, and oxygen is analyzed and found to have the exact same percentage of carbon as it

Wittaler [7]

Answer:

Explanation:

Since we aren't told the mass of material we have, let's assume the boss was generous, and precise, and we have 100.00 grams of the mystery compound. We are told only that hydrogen is 5.988% and that the only other two elements are carbon and oxygen, with equal percentages. (100%-5.988%)/2 = 47.006% of each. See the attached table.

We now have the number of grams of each element, so let's convert that into moles of each by dividing the mass by the element's molar mass, The result in the table is

<u>Moles</u>

C 3.91

H 5.99

O 2.94

We need whole numbers for the empirical formula, so round to C4H6O3, the empirical formula. Possibly acetoacetic acid, a metabolite.

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2 years ago

What has the higher specific heat, a metal spoon or a wooden spoon?<br> How can you tell?

lidiya [134]

Answer:

metal spoon

Explanation:

Metals are good conductors of heat and electricity and they have high boiling and melting points

8 0

4 years ago

What is the concentration of a solution?​

What is the concentration of a solution?