What does the backward arrow ( ← ) mean in a chemical equation?

Answers

Answer 1

Answer:

Answer:the reaction arrow is used most frequently and indicates a reaction occurring from the reactants to the products. The arrow's head points in the direction the reaction proceeds in.

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If a substance has a large mass and a small volume what can you conclude about it

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I could conclude, based on that information, that the density of the substance is quite high.

You can conclude that the substance has a very high density!

How does the Doppler effect related to the universal expanding?

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The Doppler effect doesn't just apply to sound. It works with all types of waves, which includes light. Edwin Hubble used the Doppler effect to determine that the universe is expanding. Hubble found that the light from distant galaxies was shifted toward lower frequencies, to the red end of the spectrum. This is known as a red Doppler shift, or a red-shift. If the galaxies were moving toward Hubble, the light would have been blue-shifted.

Is crumpling a piece of paper chemical changes

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No, because you are not changing the chemical make-up of the paper

Answer:

No, it would be a physical change, as the crumpled paper is still paper. There was no chemical reaction. An example of chemical change would be burning paper, as it turns to smoke and ashes.

3.72 short tons into mg

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Both are the unit of mass.

1 short ton = 2000 pounds

1 short ton = 907.18474 kg

Thus, 3.72 short ton = $907.18474 kg * 3.72$

= 3,374.727 kg

Now, convert kg to mg:

1 kg = 10,00,000 mg

Therefore,

3.72 short tons = $3,374.727 kg * 10,00,000$

= $3.3747 * 10^(9) mg$

Hence, 3.72 short tons = $3.3747 * 10^(9) mg$

If the pH of a solution is 5.3, what is the pOH?
A.5.3
B.4.7
C.8.7
D.9.3

Answers

The correct answer is C) 8.7

What does pH answer mean?

The pH of a solution indicates the acidity or basicity of the answer. A solution is said to be neutral if the pH is 7, if the pH fee is less than 7 then it is acidic in nature and if the pH cost is greater than 7 then the solution is simple in nature.

What does pH stand for?

Ph may appear as it belongs at the periodic desk of factors, however, it's truly a unit of size. The abbreviation pH stands for ability hydrogen, and it tells us how an awful lot hydrogen is in drinks—and the way active the hydrogen ion is.

What's the pH of a solution?

PH is a measure of the attention of H+(aq) ions in an answer. The attention of H+ ions may be stated in mol dm(-three), but the use of the log(10) feature simplifies the numbers concerned. Definition: pH is the terrible logarithm to base 10 of the hydrogen ion awareness in an aqueous solution.

Learn more about the solution here: brainly.com/question/251701

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5. Enzymes and acidic juices in the stomach, whichbreak proteins down into smaller molecules, is known

Answers

they are known has catalyst.

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