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icang [17]
2 years ago
10

The stimulus is related to?​

Chemistry
1 answer:
Flura [38]2 years ago
4 0

Answer:

The government :) lol

Explanation:

You might be interested in
Burning 12.00 g of an oxoacid produces 17.95 g of carbon dioxide and 4.87 g of water. Consider that 0.25
Veseljchak [2.6K]

Answer: The molecular formula will be C_6H_6O_6

Explanation:

Mass of CO_2 = 17.95 g

Mass of H_2O= 4.87 g

Molar mass of carbon dioxide = 44 g/mol

Molar mass of water = 18 g/mol

For calculating the mass of carbon:

In 44g of carbon dioxide, 12 g of carbon is contained.

So, in 17.95 g of carbon dioxide, =\frac{12}{44}\times 17.95=4.89g of carbon will be contained.

For calculating the mass of hydrogen:

In 18g of water, 2 g of hydrogen is contained.

So, in 4.87 g of water, =\frac{2}{18}\times 4.87=0.541g of hydrogen will be contained.

Mass of oxygen in the compound = (12.00) - (4.89+0.541) = 6.57 g

Mass of C = 4.89 g

Mass of H =  0.541 g

Mass of O = 6.57 g

Step 1 : convert given masses into moles.

Moles of C =\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{4.89g}{12g/mole}=0.407moles

Moles of H=\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{0.541g}{1g/mole}=0.541moles

Moles of O=\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{6.57g}{16g/mole}=0.410moles

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C =\frac{0.407}{0.407}=1

For H =\frac{0.541}{0.407}=1

For O = \frac{0.410}{0.407}=1

The ratio of C : H : O = 1: 1  : 1

Hence the empirical formula is CHO.

Hence the empirical formula is CHO

The empirical weight of CHO = 1(12)+1(1)+1(16)= 29 g.

If 0.25 moles has mass of 44.0 g

Thus 1 mole has mass of = \frac{44.0}{0.25}\times 1=176g

Thus molecular mass is 176 g

Now we have to calculate the molecular formula.

n=\frac{\text{Molecular weight }}{\text{Equivalent weight}}=\frac{176g}{29g}=6

The molecular formula will be=6\times CHO=C_6H_6O_6

5 0
3 years ago
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 15.6 g of carbon were burned in the presence of
NeX [460]

Answer: 5.72 g mass of carbon dioxide was produced

Explanation:

C+O_2\rightarrow CO_2

Moles of C =\frac{\text{mass of carbon}}{\text{molar mass of carbon}}=\frac{15.6 g}{12 g/mol}=1.3 moles

Mass of O_2 reacted = 59.1 g - 17.5 g = 41.6 g

Moles of O_2\text{ reacted}=\frac{\text{mass of}O_2}{\text{molar mass of}O_2}=\frac{41.6 g}{32 g/mol}=1.3 moles

According to reaction 1 mole O_2 produces 1 mole of CO_2 then 1.3 mole of O_2 will produce \frac{1}{1}\times 1.3 moles of CO_2

Mass of CO_2:

=Moles of CO_2 × molar mass ofCO_2 = 1.3 ×44 g/mol =

=57.2 grams

5.72 g mass of carbon dioxide was produced

7 0
2 years ago
A rocket travels 4500 meters in 150 seconds. What is its average speed?
Dmitrij [34]

Answer:

Your average speed was 3.77 Miles per hour

Explanation:

5 0
2 years ago
Arrange the elements in order of increasing atomic radlus. Use the periodic table
nlexa [21]
Largest to smallest: barium, calcium, selenium, oxygen
3 0
2 years ago
Read 2 more answers
10g of an oxide of copper contains 8.882g of copper. what is empirical formula of the copper oxide
-BARSIC- [3]

Answer:

Mass of copper oxide: 10g

Mass of copper: 8.882g

Mass of oxygen: 1.118g

                                                                <u> Cu</u>               <u>O</u>

                                                              8.882           1.118

Divide by A_{r}                                   8.882÷63.5       1.118÷16

                                                               0.14             0.07

Divide by the lowest number          0.14/0.07       0.07/0.07

                                                                  2                  1

Check the ratio now, Cu has 2 atoms and O has 1 atom .

The formula is Cu_{2} O

4 0
3 years ago
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