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Igoryamba
2 years ago
11

Fossils provide evidence that

Chemistry
1 answer:
katrin2010 [14]2 years ago
7 0
Of these options, I'd say the third choice or "Many species of organisms that lived long ago are now extinct". I hope this helps :)
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What is difference between groups and periods? 8th grade science idk what to put it under
d1i1m1o1n [39]
One is rows the other is columns
7 0
3 years ago
What are the chemicals used to preserve food and give it color and flavor​
Lelechka [254]

Answer:

Some of the chemicals used to preserve food and give it color are sodium nitrate, sodium benzoate, and propionate

Explanation:

6 0
2 years ago
the student records the concentration of the stock solution of H2O2 to be 0.950 M. The student proceeds to prepare the reaction
lana [24]

Answer:

0.0400M of KI

Explanation:

Molarity is an unit of concentration defined as the ratio between moles of solute and liters of solution.

When you add 10.0 mL of 0.10M KI and 15.0mL, total volume is:

25.0mL = <em>0.025L of solution</em>

<em />

And moles of KI are:

0.0100L × 0.10M = <em>0.00100 moles of KI</em>

<em />

Thus, molarity is:

0.00100 moles / 0.025L = <em>0.0400M of KI</em>

6 0
3 years ago
An object with a mass of 5.0 kg accelerates 8.0 m/s2 when an unknown force is applied to it. What is the amount of the force?
atroni [7]
The correct amount of force i believe is
f= 40 newton
i got the answer by using the formula below
force = mass x acceleration
f=5kg *8.0 m/s^2


7 0
3 years ago
19
Luda [366]
Bit.my/3a8Nt8n here’s the link for the answer
3 0
2 years ago
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