3 years ago

1

1 answer:

7 0

Answer: The temperature does effect the growth of the plants. If you kept them all at different temperature and the growth was different then the temperature is definitly a factor in plant growth

Explanation:

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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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This is how krypton appears in the periodic table. Rounded to the nearest whole number, how many protons are in an atom of krypt

Ierofanga [76]

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Which element requieres the least amount of energy to remove the outermost electron

Arte-miy333 [17]

Answer: Sodium

Explanation: The sodium has only one electron at the outer layer.

Hope this helps! :)

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Gases become more soluble in liquids as the temperature

Oksi-84 [34.3K]

gases become more soluble in liquids as the temperature gets higher
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Julie enters science so excited to do her lab. She sets down her book back, gets all of her safety gear on and begins to gather

AleksAgata [21]

Answer:

What Julie did wrong is that she did not read the instructions for her lab of wait for her instructor to allow her to get started.

Explanation:

it is essential to know what you are doing in a science lab because you can be injured seriously if you don't stop and take time to read and listen to you instructors directions.

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