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diamong [38]
3 years ago
12

HELP ASAP I NEED HELP FAST PLEASE

Chemistry
2 answers:
ella [17]3 years ago
6 0

1. C

2. D (I’m not entirely sure)

3.energy can neither be created nor destroyed, only change forms.

4. C

5. A

6. C

I’ve researched and tried to answer these questions correctly.

Lapatulllka [165]3 years ago
3 0

Answer:

1.c

2.a

3.created or destroyed

4.c

5.a

6.c

Explanation:

thanks me later

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Ethanoic acid and 1-butanol can react to produce water and a compound classified as an 1) aldehyde 2) amine 3) ester 4) halide
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Answer:

3) ester

Explanation:

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A solution contains 1.817 mg of CoSO4 (155.0 grams/mole) per mL. Calculate the volume (in mL) of 0.009795 M Zn2 needed to titrat
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Answer:

<u> </u><u>85.952 ml</u> Zn^2^+  needed to titrate the excess complexing reagent .

Explanation:

Lets calculate

After addition of 80 ml of EDTA the solution becomes = 20 + 70 = 90 ml

As the number of moles of CoSO_4 =\frac{Given mass }{molar mass}

                                                       =\frac{1.817}{155}

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Molarity = \frac{no. of moles}{volume of solution}

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Excess of EDTA = concentration of EDTA - concentration of CoSO4

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                           = 0.008419 M

As M1V1 ( Excess of EDTA ) = M2V2 (Zn^2^+)

           0.008419\times100ml=0.009795\times V2

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Therefore , <u>85.952 ml </u>Zn^2^+ needed to titrate the excess complexing reagent .

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