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3 years ago

Questions

Chemistry

1 answer:

AlekseyPX3 years ago

6 0

Answer:

the answer is convection

convection

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Which physical state of nitrogen has the highest entropy? (1 point) solid liquid gas vapor?

Tju [1.3M]

Answer is. gas <span>has the highest entropy.
</span>Entropy is the measure of the molecular disorder<span> and it is system’s thermal </span>energy<span> per unit </span>temperature<span> that is unavailable for doing useful </span>work<span>.
Nitrogen molecules have weakest intermolecular bonds in gas phase and move fast and without order. In solid state movement is much more less.
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3 0

3 years ago

if you are curious at to why so many of ur family members have certain hair or eye color, you might want to look at... A. Astrol

densk [106]

Answer:

c) hereditary

Explanation:

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7 0

3 years ago

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What mass of H₂ is needed to react with 8.75 g of O₂ according to the following equation: O2(g) + H2(g) → H₂O(g)?

FromTheMoon [43]

Explanation:

For reacting with 8.75 grams of oxygen, 1.08 grams of hydrogen is required.

The given balanced equation has been:

\rm O_2\;+\;2\;H_2\;\rightarrow\;H_2OO2+2H2→H2O

From the equation, 1 mole of oxygen reacts with 2 mole of hydrogen to give 1 mole of water.

The mass of oxygen has been: 8.75 g,

Moles = \rm \dfrac{weight}{molecular\;weight}molecularweightweight

Moles of oxygen = \rm \dfrac{8.75}{32}328.75

Moles of oxygen = 0.27 mol

Since,

1 mole Oxygen = 2 mole hydrogen

0.21 mol oxygen = 0.54 mol hydrogen

Mass of hydrogen = moles \times× molecular weight

Mass of hydrogen = 0.54 \times× 2

Mass of hydrogen = 1.08 grams.

Thus, for reacting with 8.75 grams of oxygen, 1.08 grams of hydrogen is required.

6 0

1 year ago

Please help!! I was sick when he went over this

Alexus [3.1K]

Answer:

5.70×10^-11 m

Explanation:

7 0

3 years ago

If a solution has a [H+] of 9.3x10-11, what is the pH?

Rina8888 [55]

Answer:

Explanation:

The pH of a solution can be found by using the formula

$pH = - log [ {H}^{+} ]$

From the question we have

$ph = - log(9.3 \times {10}^{ - 11} ) \\ = 10.0315...$

We have the final answer as

Hope this helps you

4 0

3 years ago