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labwork [276]
3 years ago
8

ANSWER ASAP PLZ???????????????????????????????????

Chemistry
2 answers:
Furkat [3]3 years ago
7 0

Answer:

The answer should be A

Explanation:

sattari [20]3 years ago
7 0

Answer:

Leaving a Copper penny in vinegar until it turns green

Explanation:

the others are physical changes. when copper penny is put in vinegar, a reactive oixde layer is formed which is green in colour. namely, Cu(II) acetate.

The green growing on the penny of copper and the rust forming on the nail of iron are chemical changes. Boiling away salt water, scraping iron filings from a mixture of sand with a magnet, and breaking a rock with a hammer, are physical changes.

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g Consider the reaction when aqueous solutions of potassium hydroxide and ammonium bromide are combined. The net ionic equation
vichka [17]

Answer:

K^+(aq) + Br^-(aq) -----> KBr(aq)

Explanation:

The net ionic equation shows the actual reaction that occurs in the system. The molecular reaction equation includes the spectator ions but the net ionic equation does not include the spectator ions.

Spectator ions do not participate in the main reaction going on in the system.

Hence, for the reaction of potassium hydroxide and ammonium bromide, we have;

K^+(aq) + Br^-(aq) -----> KBr(aq)

8 0
4 years ago
In word equations, what do plus signs actually mean?
shepuryov [24]
<span>It means that your combining those two chemical substances</span>
3 0
4 years ago
Read 2 more answers
What is true of a molecule? A. All molecules of a compound have the same properties. B. Each molecule of a compound has differen
lions [1.4K]

Answer: A. or C. (most likely C.)

Explanation:

All molecules of a compound have the same properties. ... All molecules of a compound have one type of atom.

Jeez, they r both true.....go with A. or C.

Hope this helps!

3 0
4 years ago
What Happens During Fermentation?
Stella [2.4K]

Answer:

Fermentation is a metabolic process in which an organism converts a carbohydrate, such as starch or a sugar, into an alcohol or an acid. For example, yeast performs fermentation to obtain energy by converting sugar into alcohol.

Sometimes bacteria perform fermentation, converting carbohydrates into lactic acid...

<em><u>You can look up videos of yeast fermentation in apple juice.</u></em>

5 0
3 years ago
The rate of change in distance dicided by time​
ArbitrLikvidat [17]

Answer:

I learnt this from Khan academy you should try it too

Explanation:

Rate of change in position, or speed, is equal to distance traveled divided by time. To solve for time, divide the distance traveled by the rate. For example, if Cole drives his car 45 km per hour and travels a total of 225 km, then he traveled for 225/45 = 5 hours.

6 0
3 years ago
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