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harkovskaia [24]
2 years ago
10

What does carbon dioxide absorb the most heat energy

Chemistry
1 answer:
Ilia_Sergeevich [38]2 years ago
8 0
Should be <span>during deposition.

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A scientist wants to know: "If salt is added to water, would the
bezimeni [28]

Answer:

no, the sollution will boil at a higher temperature because the density of the sollution will increase when salt is added to it

3 0
3 years ago
Read 2 more answers
Gaseous methane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 7.9 g of methane is
Vikki [24]

Explanation:

The given reaction is as follows.

     CH_{4} + 2O_{2} \rightarrow CO_{2} + 2H_{2}O

As it is known that number of moles equal mass divided by molar mass. Molar mass of methane is 16 g/mol.

Hence,   No. of moles = \frac{mass}{molar mass}

                                   = \frac{7.9 g}{16 g/mol}

                                   = 0.493 mol

Molar mass of oxygen is 32 g/mol.

Hence, its number of moles = \frac{mass}{molar mass}

                                            = \frac{14.4 g}{32 g/mol}

                                            = 0.45 mol

As, it is shown from the reaction that 1 mole of methane needs 2 mole of oxygen.

Therefore, 0.493 mol of methane needs 2 \times 0.45 mol equals 0.9 moles of oxygen.

As there is only 0.45 moles of oxygen for the reaction. So, it means that oxygen is the limiting reagent.

Hence, for 0.45 moles of oxygen, methane required is as follows.

                        \frac{0.45}{2} = 0.225 moles

So, 0.225 moles of methane is equal to 0.225 \times 16 = 3.6 g

As, 3.6 g of methane reacts with oxygen. Therefore, amount of methane remains is calculated as follows.

                   (7.9 g - 3.6 g) = 4.3 g

 Thus, we can conclude that the minimum mass of methane that could be left over by the chemical reaction is 4.3 g.

8 0
3 years ago
Find the number of molecules in .815 mole of O2​
Simora [160]

Answer:

4.9 × 10²³ molecules

Explanation:

Given data:

Number of molecules = ?

Number of moles of oxygen = 0.815 mol

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

0.815 mol  ×  6.022 × 10²³ molecules  / 1 mol

4.9 × 10²³ molecules

6 0
2 years ago
C3H8 + 5O2 → 3CO2 + 4H2O
trasher [3.6K]

Answer:

16.5moles of CO2

Explanation:

Molar mass of O2 is 32g/Mol

No of mole = 880/32 = 27.5 moles

27.5 Mol of O2 gives X mole of CO2

5 mole of O2 gives 3 moles of CO2

No of mole of CO2 = (27.5×3)/ 5 = 16.5moles

7 0
3 years ago
Please help answering 46)
OLga [1]

Answer:

CO2 is a trigonal planar.

8 0
2 years ago
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