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kakasveta [241]
3 years ago
6

How many moles of oxygen are needed to burn 2.7 moles of methyl

Chemistry
1 answer:
QveST [7]3 years ago
5 0

Answer:

3.38 moles of O2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

4CH2OH + 5O2 → 4CO2 + 6H2O

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Finally, we shall determine the number of mole of O2 needed to react with 2.7 moles of CH2OH. This can be obtained as follow:

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Therefore, 2.7 moles of CH2OH will require = (2.7 × 5)/4 = 3.38 moles of O2 for complete combustion.

Thus, 3.38 moles of O2 is required.

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Answer: the answer is b: sp3d

Explanation: BrF3 has a Bent T shaped structure with Br as a central atom bonded with three F atoms (three bond pairs) and two lone pairs. Hence , the hybridization would be sp3d. Br atom has 7 electron in its outer most shell. After the bond formation of BrF3 molecule we have 3 bond pairs+ 2 lone pairs

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3 years ago
lighting a match results in light and heat since energy was not created by the match what transformation took place
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Which of these electron transitions correspond to absorption of energy and which to emission?
dezoksy [38]

For emission n=3 to n=1 The energy will be released

When an electron transitions from a lower state of energy energy level, absorption spectra are formed. When an electron transitions from a higher energy state to a lower energy state, emission spectra are produced.

To see a wavelength released, electrons would have to go down energy levels to view an emission spectra, limiting our solution options to And because n=3 to n=1 has more energy emitted than n=2 to n=1, the one with more energy emitted will have a shorter wavelength because wavelength and energy are inversely related. Energy will be released as an electron transitions from a higher energy state 3 to a low energy state 1.

To know more about emission spectra refer to brainly.com/question/14649237

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7 0
2 years ago
Express the measurement 4.22 quarts in the units of microliters​
11Alexandr11 [23.1K]

Answer:

3.99x10^6 \mu L

Explanation:

Hello there!

In this case, for this units conversion problem, it turns out necessary to write the equivalence statement for liters and quarts as follows:

1 qt = 0.946353 L

Thus, the conversion set up turns out to be:

4.22qt*\frac{0.946353 L}{1qt} \\\\=3.99L

Next, we convert to microliters as follows:

3.99L*\frac{1\mu L}{10^{-6}L}\\\\=3.99x10^6 \mu L

Regards!

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3 years ago
If you cannot get a chair to move across the floor, it is because ___ friction opposes your push.
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If you cannot get a chair to move across the floor, it is because STATIC friction opposes your push.
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4 years ago
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