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Eddi Din [679]
3 years ago
15

How are plant and animal structures similar?

Chemistry
1 answer:
NikAS [45]3 years ago
8 0

Answer:

I think they both need water and sun light to stay alive

Explanation: Animals need water so they can have energy and they have extra energy when they are in the sun they have more energy

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Express in scientific notation. Make sure your answer has the same number of significant figures as the starting value. (6.0 x 1
Greeley [361]
I believe the correct answer from the choices listed above is the second option. The expression (6.0 x 104) (3.1 x 10-1) is equal to 1.9 x 10^4. We only have two significant figures from the starting expression that is why we rounded of the product from 1.86 to 1.9.
3 0
3 years ago
What is called what a scientist personal opinion affects the way experimental results are reported?
e-lub [12.9K]
The answer would be A.Bias because the scientist can form a Bias opinion based on his beliefs 
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3 years ago
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Q: A 25.5 mL aliquot of HCl (aq) of unknown concentration was titrated with 0.113 M NaOH (aq). It took 51.2 mL of the base to re
blondinia [14]
M ( HCl ) = ?

V ( HCl ) = 25.5 mL in liters : 25.5 / 1000 => 0.0255 L

M ( NaOH ) = 0.113 M

V ( NaOH ) = 51.2 mL / 1000 => 0.0512 L

number of moles NaOH:

n = M x V

n = 0.113 x <span> 0.0512 => 0.0057856 moles of NaOH

mole ratio:

</span><span>HCl + NaOH = NaCl + H2O
</span><span>
1 mole HCl -------------- 1 mole NaOH
( moles HCl ) ----------- </span><span> 0.0057856 moles NaOH
</span>
(moles HCl ) = <span> 0.0057856 x 1 / 1
</span>
= <span> 0.0057856 moles of HCl
</span>
M ( HCl ) = n / V

M =  0.0057856 / <span>0.0255
</span>
= 0.227 M

Answer A

hope this helps!

4 0
3 years ago
Read 2 more answers
26 g of zinc combines with 12.8 g of sulfur. What is the empirical formula of zinc sulfide?
Alisiya [41]
Moles of Zn: 26 / 65 = 0.4
Moles of S: 12.8 / 32 = 0.4

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The answer is C
7 0
3 years ago
A voltaic cell differs from an electrolytic cell in that a chemical cell uses
oksian1 [2.3K]

Answer:

3) an applied electric current

Explanation:

An electric source is used in an electrolytic cell.

7 0
3 years ago
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