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guajiro [1.7K]
2 years ago
12

Four people make observations recorded in the table.

Chemistry
2 answers:
Sav [38]2 years ago
8 0

Answer:

They involve changes in energy.

Explanation:

hope this helps

plz mark brainliest

77julia77 [94]2 years ago
6 0

Answer:

D. They involve changes in energy.

The last one

Explanation:

have a good day

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Which products of photosynthesis does your body break down to be used for cellular respiration?
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How many grams is 20 moles of (nh4)2so4 please show work
ryzh [129]

n=20 mol

(NH)4 SO4

Atomic masses :

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Therefore M= 14×2 + 1×8 + 32 + 16×4

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5 0
2 years ago
Chlorine (cl) has an atomic number of 17. it often forms an ion by gaining 1 electron. what would its charge be?
Aliun [14]

Answer:

= -1

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During the 1800s, when most of the elements were being
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A; There Similarities

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