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3 years ago

Need to finish TODAY ASAP! HIgh point questions

Chemistry

2 answers:

GarryVolchara [31]3 years ago

7 0

Answer:

The answer is C. The wire is there so that electrons can flow from one electrode to another, because without the wire, there would be nothing connecting them and the electrons would not be able to flow to each of the electrodes.

jeyben [28]3 years ago

4 0

Hello! Your answer will be C. If you need an explanation let me know!

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Consider the laboratory on HPLC analysis of components in diet soft drinks. Your standard solutions for caffeine were prepared f

borishaifa [10]

Answer:

i dont know they made me do it! sorry!!!

Explanation:

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3 years ago

Parents should avoid sharing their own mistakes with children. True/false

Vesna [10]

Parents SHOULDN'T avoid sharing their own mistakes with children.

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3 years ago

Read 2 more answers

You are given a sulfuric acid solution of unknown concentration. You dispense 10.00 mL of the unknown solution into an Erlenmeye

dmitriy555 [2]

Answer:

"0.053457 M" of sulfuric acid.

Explanation:

The given values are:

$V$ = 10 mL solution

$V_{added}$ = 12.20 mL

$V_{total}$ = 22.20 mL

then,

M 0.103 M of NaOH,

$V_{rinsed}$ = experiment will not be affected

$V_{total \ base}$ = 10.38 mL

Now,

⇒ mol of NAOH = MV

= $0.103\times 10.38$

= $1.06914 \ m$

Whether Sulfuric acid, then

⇒ $H_{2}SO_{4} + 2NaOH = Na_{2}SO_{4} + 2H_{2}O$

⇒ $mol \ of \ acid =\frac{1}{2}\times \ mol \ of \ base$

⇒ $1.06914 \ m \ mol \ of \ base = \frac{1}{2}\times 1.06914 = 0.53457 \ m \ mol \ of \ acid$

Before any dilution:

$V_{sample} = 10 \ mL$

⇒ $M \ acid = \frac{m \ mol}{V}$

$=\frac{ 0.53457 }{10}$

$=0.053457 \ M$ (Sulfuric acid)

6 0

3 years ago

Which equation is balanced?

Simora [160]

the 1st one is balanced, the 2nd isn't (the number of Mg differs from left 1 to right 2).

The third is also not balanced, 2 F left,2*3=6 on the right

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3 years ago

Which of the following is not a physical change?

eimsori [14]

Combustion is not a physical change instead it's a chemical change because when we burn things we cannot regain it's original form.

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3 years ago