3 years ago

How do humans contribute to these excessive levels of phosphorus

Chemistry

1 answer:

Gnom [1K]3 years ago

5 0

Get money all day and let em know we get cheese big dog, its big 5ive over here blood

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butalik [34]

Answer:

4-methyl-1-pentyne or 4-methylpent-1-yne

Explanation:

presence of triple bond(alkyne)

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3 years ago

Why is creativity important in scientific investigations?

irakobra [83]

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4 years ago

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A 0.15 m solution of chloroacetic acid has a ph of 1.86. What is the value of ka for this acid?

dem82 [27]

Answer: $1.67\times 10^{-3}$

Explanation:

$ClCH_2COOH\rightarrow ClCH_2COO^-+H^+$

cM 0 0

$c-c\alpha$ $c\alpha$ $c\alpha$

So dissociation constant will be:

$K_a=\frac{(c\alpha)^{2}}{c-c\alpha}$

Given: c = 0.15 M

pH = 1.86

$K_a$ = ?

Putting in the values we get:

Also $pH=-log[H^+]$

$1.86=-log[H^+]$

$[H^+]=0.01$

$[H^+]=c\times \alpha$

$0.01=0.15\times \alpha$

$\alpha=0.06$

As $[H^+]=[ClCH_2COO^-]=0.01$

$K_a=\frac{(0.01)^2}{(0.15-0.15\times 0.06)}$

$K_a=1.67\times 10^{-3]$

Thus the vale of $K_a$ for the acid is $1.67\times 10^{-3}$

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3 years ago

Lisa’s book measures 40 cm x 10 cm x 2 cm. What is the volume of her book

White raven [17]

$\text{Hello there! :)}$

$\large\boxed{V = 800cm^{3} }$

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3 years ago

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