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2 years ago

How long does it take for carbon monoxide to dissipate?

1 answer:

5 0

Answer:The half-life of carboxyhemoglobin in fresh air is approximately 4 hours. To completely flush the carbon monoxide from the body requires several hours, valuable time when additional damage can occur.

Symptoms: Dizziness; Unconsciousness; Confusion...

Explanation:

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If normal rainwater has a pH of about 6.50, what is the hydrogen ion concentration, [H+]?

IceJOKER [234]

Answer:

.000000316

Explanation:

H+=10^-pH

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3 years ago

Predict which one of the following compounds would be insoluble in water.

quester [9]

CH4 is insoluble in water

4 0

3 years ago

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NEED HELP ASAP! Write a statement explaining your claim about whether or not the equation is correctly balanced.

cupoosta [38]

Answer:

I think that it it correctly balanced that is my opinion and, because the way it is set up, that the answer will tell you weather or not it is correctly balanced or not.

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2 years ago

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Formaldehyde is a carcinogenic volatile organic compound with a permissible exposure level of 0.75 ppm. At this level, how many

Flauer [41]

Answer : The amount of formaldehyde permissible are, $5.4\times 10^{-6}g$

Explanation : Given,

Density of air = $1.2kg/m^3=1.2g/L$ $(1kg/m^3=1g/L)$

First we have to calculate the mass of air.

$\text{Mass of air}=\text{Density of air}\times \text{Volume of air}$

$\text{Mass of air}=1.2g/L\times 6.0L$

$\text{Mass of air}=7.2g$

Now we have to calculate the amount of formaldehyde.

Permissible exposure level of formaldehyde = 0.75 ppm = $\frac{0.75g\text{ of formaldehyde}}{10^6g\text{ of air}}$

Amount of formaldehyde in 7.2 g of formaldehyde = $7.2g\times \frac{0.75g\text{ of formaldehyde}}{10^6g\text{ of air}}$

Amount of formaldehyde in 7.2 g of formaldehyde = $5.4\times 10^{-6}g$

Thus, the amount of formaldehyde permissible are, $5.4\times 10^{-6}g$

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3 years ago

If a neutral atom becomes negatively charged, it has undergone _________.

ycow [4]

<span>If a neutral atom becomes negatively charged, it has undergone reduction.

Reduction is the process through which a neutral atom gain an electron (thus reducing its oxidation number) and turns into a negative ion (also known as : anion)</span>

7 0

3 years ago