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3 years ago

I need the answer for number 3 please I need to check if I’m correct?

Chemistry

1 answer:

balandron [24]3 years ago

5 0

Yes you are correct hope you do well

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A laboratory Instructor gives a sample of arnIno-acid powder to each of four students, I, II. III, and iv. and they weigh the sa

Charra [1.4K]

Answer:

Explanation:

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3 years ago

You are given a sulfuric acid solution of unknown concentration. You dispense 10.00 mL of the unknown solution into an Erlenmeye

dmitriy555 [2]

Answer:

"0.053457 M" of sulfuric acid.

Explanation:

The given values are:

$V$ = 10 mL solution

$V_{added}$ = 12.20 mL

$V_{total}$ = 22.20 mL

then,

M 0.103 M of NaOH,

$V_{rinsed}$ = experiment will not be affected

$V_{total \ base}$ = 10.38 mL

Now,

⇒ mol of NAOH = MV

= $0.103\times 10.38$

= $1.06914 \ m$

Whether Sulfuric acid, then

⇒ $H_{2}SO_{4} + 2NaOH = Na_{2}SO_{4} + 2H_{2}O$

⇒ $mol \ of \ acid =\frac{1}{2}\times \ mol \ of \ base$

⇒ $1.06914 \ m \ mol \ of \ base = \frac{1}{2}\times 1.06914 = 0.53457 \ m \ mol \ of \ acid$

Before any dilution:

$V_{sample} = 10 \ mL$

⇒ $M \ acid = \frac{m \ mol}{V}$

$=\frac{ 0.53457 }{10}$

$=0.053457 \ M$ (Sulfuric acid)

6 0

3 years ago

Which of a following elements is always a component of an organic compound

HACTEHA [7]

There are there elements are important in organic compounds
carbon
hydrogen
oxygen :/example
glucose c6h12o6

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3 years ago

Suppose that CO2 in the atmosphere was held at a constant, natural level for a few thousand years. Then, CO2 was added to double

jasenka [17]

Answer: Temperature before the increase in $CO_2$ was a few degrees lower than temperature after the increase.

Explanation:

According to Charle's Law which states that The volume of gas is directly proportional to the temperature of the gas, when pressure is kept constant.

$(Volume)\propto (Temperature)$

$\frac{volume}{temperature}=constant$ (At constant Pressure)

With the increase in level $CO_2$ in atmosphere the increase in temperature of the atmosphere will be observed.

Hence, temperature before the increase in $CO_2$ was a few degrees lower than temperature after the increase.

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3 years ago

Which climate favors mechanical weathering? dry climate cold climate warm climate desert climate

xenn [34]

The answer is cold climate.

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3 years ago

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