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3 years ago

Help me I got stuck Pls

Chemistry

1 answer:

Sophie [7]3 years ago

3 0

The answer is C because the weight is going down so they form a gas.

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What is involved in weathering?

ruslelena [56]

Answer: SEA FLOOR

Explanation:

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4 years ago

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What are the concentrations of h3o+ and oh− in tomatoes that have a ph of 4.10?

IRINA_888 [86]

Answer : The concentration of $H_3O^+$ and $OH^-$ are $7.94\times 10^{-5}$ and $1.258\times 10^{-10}$ respectively.

Solution : Given,

pH = 4.10

pH : pH is defined as the negative logarithm of hydronium ion concentration.

Formula used : $pH=-log[H_3O^+]$

First we have to calculate the hydronium ion concentration by using pH formula.

$4.10=-log[H_3O^+]$

$[H_3O^+]=antilog(-4.10)$

$[H_3O^+]=7.94\times 10^{-5}$

Now we have to calculate the pOH.

As we know, $pH+pOH=14$

$4.10+pOH=14$

$pOH=9.9$

Now we have to calculate the hydroxide ion concentration.

$pOH=-log[OH^-]$

$9.9=-log[OH^-]$

$[OH^-]=antilog(-9.9)$

$[OH^-]=1.258\times 10^{-10}$

Therefore, the concentration of $H_3O^+$ and $OH^-$ are $7.94\times 10^{-5}$ and $1.258\times 10^{-10}$ respectively.

5 0

3 years ago

A protein that no longer functions because its shape has changed (e.g., as a result of heating) has been ________.

stellarik [79]

Answer: denatured

Explanation:

To denature a proteins means to subject the protein to a condition that makes the protein to stop functioning as usual. This is usually due to a permanent change in the structure or shape of the protein. A protein may be denatured by change in pH, heat of binding of other molecules to the protein molecule.

6 0

3 years ago

PLEASE HELP ASAP!!!!! What word is the best description for world population growth over the past 200 years?

alex41 [277]

Answer:

Exponential

Explanation:

Because its the numbers/anything that is becoming more and more rapid.

3 0

3 years ago

In the reaction of nitrogen gas, N2, with hydrogen gas, H2, to form ammonia gas, NH3, how many moles of hydrogen are needed to r

worty [1.4K]

Answer : The correct option is, (E) 6 moles.

Explanation : Given,

Moles of nitrogen = 2 moles

The given balanced chemical reaction is:

$N_2+3H_2\rightarrow 2NH_3$

From the balanced chemical reaction we conclude that,

As, 1 mole of nitrogen gas react with 3 moles of hydrogen gas

So, 2 mole of nitrogen gas react with $2\times 3=6$ moles of hydrogen gas

Therefore, the number of moles of hydrogen gas needed to react with 2 moles of nitrogen gas is, 6 moles.

6 0

4 years ago