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liq [111]
3 years ago
6

List the 5 signs of a CHEMICAL REACTION

Chemistry
1 answer:
SVETLANKA909090 [29]3 years ago
6 0
Color change, formation of a precipitation, formation of a gas, odor change, temperature change
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How much energy is needed to melt 47.6g of water
Rasek [7]

Answer:

15.9 kJ

Explanation:

Use the equation q = nΔH

q = (47.6)(334)

q = 15898.4 J

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3 years ago
What is extrapolation?
bixtya [17]

Answer:

A. Predicting data that fall beyond a known data point

Explanation:

Extrapolating is unreliable because you are predicting data outside of the data range - anything could happen for the data to stop following the trend or pattern

8 0
3 years ago
How many atoms are present in 65.39 g of zinc?
klio [65]
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles.

 65.39 g Zn ( 1 mol / 65.38 g ) ( </span>6.022 x 10^23 atoms / 1 mol ) = 6.023x10^23 atoms Zn
3 0
3 years ago
Help me it’s science
Nezavi [6.7K]
Bb
because B is dominant
4 0
3 years ago
Read 2 more answers
The _____________ have a single electron in the highest occupied energy level.
IRISSAK [1]
In order to help the student expand his/her knowledge I will help answer the question. This in hope that the student will get a piece of knowledge that will help him/her through his/her homework or future tests. The ________ have a single electron in the highest occupied energy level. The missing word to complete this statement and make it true is Alkali Metals.
<span>
I hope it helps, Regards.</span>
5 0
3 years ago
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