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3 years ago

I will mark brainliest

Chemistry

2 answers:

anyanavicka [17]3 years ago

4 0

This would be a compound because it has more than one molecules that are the same that are attached together forming a chemical bond.

stira [4]3 years ago

4 0

Answer:

The correct answer is B.

Explanation:

This is a compound because the two elements Hydrogen and Nitrogen mixed with the formula NH3 make it up.

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How many moles of H3PO4 would produce 12 moles of water in this reaction? ЗKOH + H3PO4 K3PO4 + 3H20

Olenka [21]

Answer:

4 moles of H₃PO₄

Explanation:

The reaction expression is given as;

3KOH + H₃PO₄ → K₃PO₄ + 3H₂O

Number of moles of water = 12moles

Unknown:

Number of moles of H₃PO₄ = ?

Solution:

From the balanced reaction expression we see that;

3 moles of water is produced from 1 mole of H₃PO₄

So; 12 moles of water would be produced from $\frac{12}{3}$ = 4 moles of H₃PO₄

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3 years ago

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Are photosynthesis and cellular respiration part of the land-based carbon cycle of water-based carbon cycle

Dmitrij [34]

It would be the water based carbon cycle

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3 years ago

How many of the following statements about silver acetate, AgCH3COO, are true? i) More AgCH3CoO(S) will dissolve if the pH of th

shutvik [7]

Answer:

All three statements are true

Explanation:

Solubility equilibrium of silver acetate:

$AgCH_{3}COO\rightleftharpoons Ag^{+}+CH_{3}COO^{-}$

If pH is increased then concentration of $H^{+}$ increases in solution resulting removal of $CH_{3}COO^{-}$ by forming $CH_{3}COOH$ . Hence, according to Le-chatelier principle, equilibrium will shift towards right. So more $AgCH_{3}COO$ will dissolve
If $AgNO_{3}$ is added then concentration of $Ag^{+}$ increases in solution resulting shifting of equilibrium towards left in accordance with Le-chatelier principle. So less $AgCH_{3}COO$ will dissolve
Insoluble precipitate of AgOH is formed by adding NaOH in solution resulting removal of $Ag^{+}$ . So, more $AgCH_{3}COO$ will dissolve

Hence all three statements are true

8 0

3 years ago

How did the Bohr model of the atom affect scientific thought?

Vadim26 [7]

Answer:

C. Scientists accepted the model at first but later rejected it.

Explanation:

Scientists accepted the model at first because it explained the hydrogen emission spectrum.

However, with the development of quantum mechanics, scientists had to modify the model (not reject it).

Electrons still had specific energies, but they no longer travelled in fixed orbits.

Instead, electrons had a probability of being found in a given region of space.

5 0

3 years ago

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When your muscle gets tired, it builds up the _______ and makes it more powerful.

Nataly [62]

The answer is “D Tissue”

Explanation:

when you workout you tear down your muscles (tissue) and after your done working out your body rebuilds tissue

hope this helps

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2 years ago