What is the boiling point of 1 cup of water with 6 tablespoons of salt?

This is the chemical formula for acetone: CH32CO. Calculate the mass percent of carbon in acetone.

olga_2 [115]

Answer:

62.07 %

Explanation:

Chemical Formula = (CH3)2CO = C3H6O

Mass of C = 12 g/mol

Mass of H = 1 g/mol

Mass of O = 12 g/mol

Mass of C3H6O = 3(12) + 6(1) + 16 = 58 g/mol

Total mass of C in Acetone = 12 * 3 = 36 g

Mass Percent of C = Total mass of C / Mass of Acetone * 100

Mass percent = 36 / 58 * 100

Mass percent = 62.07 %

6 0

3 years ago

what is the percent yield of titanium (II) oxide if 20.0 grams of titanium (II) sulfide is reacted with water? The actual yield

earnstyle [38]

Answer : The percent yield of titanium (II) oxide is, 142.5 % and the impurities could have caused the percent yield to be so high.

Explanation : Given,

Mass of titanium(II) sulfide = 20.0 g

Molar mass of titanium(II) sulfide = 79.9 g/mole

Molar mass of titanium(II) oxide = 63.9 g/mole

First we have to calculate the moles of titanium(II) sulfide.

$\text{ Moles of titanium(II) sulfide}=\frac{\text{ Mass of titanium(II) sulfide}}{\text{ Molar mass of titanium(II) sulfide}}=\frac{20.0g}{79.9g/mole}=0.2503moles$

Now we have to calculate the moles of titanium(II) oxide.

The balanced chemical reaction is,

$TiS+H_2O\rightarrow TiO+H_2S$

From the reaction, we conclude that

As, 1 mole of titanium(II) sulfide react to give 1 mole of titanium(II) oxide

So, 0.2503 mole of titanium(II) sulfide react to give 0.2503 mole of titanium(II) oxide

Now we have to calculate the mass of titanium(II) oxide.

$\text{ Mass of titanium(II) oxide}=\text{ Moles of titanium(II) oxide}\times \text{ Molar mass of titanium(II) oxide}$

$\text{ Mass of titanium(II) oxide}=(0.2503moles)\times (63.9g/mole)=15.99g$

To calculate the percentage yield of titanium (II) oxide, we use the equation:

$\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100$

Experimental yield of titanium (II) oxide = 22.8 g

Theoretical yield of titanium (II) oxide = 15.99 g

Putting values in above equation, we get:

$\%\text{ yield of titanium (II) oxide}=\frac{22.8g}{15.99g}\times 100\\\\\% \text{yield of titanium (II) oxide}=142.5\%$

Hence, the percent yield of titanium (II) oxide is, 142.5 %

If the percent yields is greater than 100% that means the product of the reaction contains impurities which cause its mass to be greater than it actually.

5 0

3 years ago

What law does a balanced chemical equation demonstrate?

DochEvi [55]

Answer:

The law of conservation of mass

Explanation:

A chemical equation is an expression of the net composition change associated with a chemical reaction. It shows how a certain amount of reactants yields a certain amount of products. Both of these amounts are measured in moles. Chemical equations often contain information about the state of the reactants: solid, liquid, gas, or aqueous. In addition, they always adhere to the law of conservation of mass, which holds that matter can change form, but cannot be created or destroyed.

3 0

3 years ago

What is the significant figures of 12.00

dem82 [27]

There are 4 significant figures

7 0

3 years ago

What type of calorimeter would be best to use if you wanted to measure the heat that is released when gasoline is burned?

andrey2020 [161]

Answer:

Constant Volume Calorimeter

Explanation:

In order to measure the heat released in burning of a gasoline, we generally use closed calorimeter. It is a constant volume calorimeter.

Most common example of such calorimeter is Bomb calorimeter.

We use closed calorimeter or constant volume calorimeter as large amount of heat is released during combustion of a fuel or gasoline.

5 0

3 years ago

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What is the boiling point of 1 cup of water with 6 tablespoons of salt?​

What is the boiling point of 1 cup of water with 6 tablespoons of salt?