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amid [387]
4 years ago
5

Which of the following describes a reference point?

Chemistry
1 answer:
Vitek1552 [10]4 years ago
5 0

Answer:

A

Explanation:

i think the answer is A

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38.0 mL of a 0.026 M solution of HCl is needed to react completely with a 0.032 M NaOH solution. Calculate the number of moles o
svet-max [94.6K]

<u>Answer:</u>

<em>The number of moles  of HCl actually present is 0.000988</em>

<u>Explanation:</u>

<em>The balanced chemical equation of the given reaction is </em>

HCl+NaOH \rightarrow NaCl+H_2 O

Here one mole of HCl reacts with one mole of NaOH to form one mole of NaCl and one mole of  water. Here the molarity of HCl is given as 0.026M.

<em>molarity of NaOH is 0.032M </em>

molarity is the number of moles per unit volume of solution.

we have to calculate the number of moles in 36 mL of HCl.

<em>38 mL=36/1000=0.038L </em>

<em>the number of moles in 38 mL of HCl is given by </em>

<em>no of moles =0.026 \times 0.038=0.000988</em>

5 0
4 years ago
Pls answer quickkk :)))
postnew [5]

Answer:

c turns back when iodine is added result indicated a chemical reaction

4 0
3 years ago
The weights of all elements are always compared to oxygen.<br> True <br> False
kozerog [31]

Answer:

false

Explanation:

I'm pretty sure it's compared to carbon

8 0
3 years ago
Read 2 more answers
How much 0.85 M HCl solution can be made by diluting 250 mL of 10 M HCl?
7nadin3 [17]

<span>Answer is:  2940 mL of the HCL solution.</span>

c₁(HCl) = 10.0 M.

V₂(AgNO₃<span>) = ?.
c</span>₂(AgNO₃<span>) = 0.85 M.
V</span>₁(AgNO₃<span>) = 250 mL </span>÷ 1000 mL/L = 0.25 L.

<span> c</span>₁<span> - original concentration of the solution, before it gets diluted.
c</span>₂<span> - final concentration of the solution, after dilution.
V</span>₁<span> - volume to be diluted.
V</span>₂<span> - final volume after dilution.
c</span>₁ · V₁ = c₂ · V₂<span>.
V</span>₂(HCl) = c₁ · V₁ ÷ c₂.

<span> V</span>₂(HCl) = 10 M · 0.25 L ÷ 0.85 M.

<span> V</span>₂(HCl) = 2.94 L · 1000 mL = 2940 mL.

7 0
3 years ago
Read 2 more answers
*<br> Matter cannot be divided indefinitely is part of the:
laiz [17]

Answer:

4+4=8

Explanation:

8=X

5 0
3 years ago
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