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3 years ago

Explain which of benzene or naphthalene molecule would have equivalent carbon-carbon bond length

Chemistry

1 answer:

Andrei [34K]3 years ago

3 0

Answer:

Lengths. of. Naphthalene. Figure 3.20 shows that there are two equivalent ... all the carbon–carbon bonds of benzene are identical and are intermediate in length ... A typical carbon–carbon single bond has a length of 1.54 Å, and a double ... of how resonance can be used to explain or predict experimental observations.Explanation:

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Finger [1]

Needs a question in order to know the answer.

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4 years ago

Need to find moles and molarity

valentinak56 [21]

You multiply the molarity by the volume in litres.
Explanation:
Molarity is the number of moles of a substance in one litre of solution. The official symbol for molarity is “c” (concentration), but many people use the old symbol “M”.
M
=
n
V
, where
n
is the number of moles and
V
is the volume in litres.
We can rearrange this equation to get the number of moles:
n
=
M
×
V

Example
:
How many moles of
NaCl
are contained in 0.300 L of 0.400 mol/L
NaCl
solution?
Solution:
n
=
0.300
L soln
×
0.400 mol NaCl
1
L soln
=
0.120 mol NaCl

4 0

3 years ago

PLEASE ANSWER

Burka [1]

C. Microwaves.

Starting with the most obviously dangerous, gamma rays are the highest frequency and most energetic form of light. They penetrate the human body and cause radiation poisoning after nuclear events like melt downs. Very harmful.

X-Rays penetrate skin and muscle but not bones. They're useful for medical and dental imaging, but if they interact with your DNA, they can cause cancer. In fact, the first people to die because of X-rays were shoe salesmen. They used an x-ray device to scan people's feet and were overexposed to harmful x-rays.

UV rays can interact with your skin and your eyes. They cause you to tan, get a sunburn, or get skin cancer. Their wavelength allows them to penetrate the top layers of your skin, and if they interact with your skin cells, they can develop cancer.

Visible light is harmful to your eyes when bright enough, like staring at the sun or a high energy laser beam. Dark spots can be burned into your retinas, and you'd have those spots permanently.

Infrared light is heat, so you can be burned when close to fires or radiant heat sources.

Since we are mostly made of water, microwaves can harm us. Microwave ovens are made to be very safe, but when they were first developed, radiation leakage could be harmful. If there was a big enough microwave oven and you were inside it, it would be incredibly harmful!

It is not known if radio waves can be harmful. Our cell phones transmit in the radio/microwave part of the spectrum, and studies are being done to see if they have long term harmful effects.

So while all forms of electromagnetic waves can be harmful, the ones usually though of as harmful are Gamma rays, X-rays, and Ultraviolet light.

8 0

3 years ago

The mass composition of a compound that assists in the coagulation of blood is 76.71% carbon, 7.02% hydrogen, and 16.27% nitroge

brilliants [131]

Answer : The empirical of the compound is, $C_{11}H_{12}N_2$

Explanation :

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of C = 76.71 g

Mass of H = 7.02 g

Mass of N = 16.27 g

Molar mass of C = 12 g/mole

Molar mass of H = 1 g/mole

Molar mass of N = 14 g/mole

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{76.71g}{12g/mole}=6.39moles$

Moles of H = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{7.02g}{1g/mole}=7.02moles$

Moles of N = $\frac{\text{ given mass of N}}{\text{ molar mass of N}}= \frac{16.27g}{14g/mole}=1.16moles$

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

For C = $\frac{6.39}{1.16}=5.5$

For H = $\frac{7.02}{1.16}=6.0\approx 6$

For N = $\frac{1.16}{1.16}=1$

The ratio of C : H : N = 5.5 : 6 : 1

To make in a whole number we are multiplying the ratio by 2, we get:

The ratio of C : H : N = 11 : 12 : 2

The mole ratio of the element is represented by subscripts in empirical formula.

The Empirical formula = $C_{11}H_{12}N_2$

Therefore, the empirical of the compound is, $C_{11}H_{12}N_2$

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4 years ago

What is 1520 9600 mg to kilograms

Ostrovityanka [42]

I Think that the answer is 15.2096 Kilograms, but I might be wrong.

5 0

3 years ago

Explain which of benzene or naphthalene molecule would have equivalent carbon-carbon bond length​

Explain which of benzene or naphthalene molecule would have equivalent carbon-carbon bond length