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frez [133]
3 years ago
7

I bet no one can solve this

Chemistry
1 answer:
Nikitich [7]3 years ago
3 0
The answer is 89.4 g/mol cuz the two units carry positives so that means 8.50 flows for 2 more hours than usual.
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A student determines that she used 0.0665 mol of sodium hydroxide (NaOH) to completely titrate 25.00 mL of sulfuric acid solutio
AysviL [449]

To determine the concentration of one solution which is specifically basic or acidic solution through taking advantage on its points of equivalence, titration analysis is done.

Let us determine the reaction for the titration below:

2NaOH +2H2SO4 = Na2SO4 +2H2O

 

So,

0.0665 mol NaOH (2 mol H2SO4/ 2mol NaOH) / .025 L solution 

= 2.62 M H2SO4


The answer is the fourth option: 

<span>2.62 M</span>
7 0
3 years ago
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The quantity, q grams, of the radioactive isotope strontium-90 present in a sample decreases by half over a period of about t =
velikii [3]
Notice q=3/2, is half of the original q = 3(<span>1/2</span>)<span>t/28.8
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8 0
2 years ago
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Which of the following has more atoms?
aniked [119]

Answer:

They all have the same number of atoms

Explanation:

Which of the following has more atoms?

One mole of zinc

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O They all have the same number of atomst

a mole of anything contains Avogadros number of 6.022X10^23  things

which has the greatest number of thing? a dozen eggs, a dozen cookies, a dozen pizzas?

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particles.

just like every dozen contains 12

so

They all have the same number of atoms

3 0
3 years ago
Name the type of equation shown here: 2NaBr+Ca(OH)2 —&gt;CaBr2+2NaOH
sergeinik [125]
A) Double replacement
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3 years ago
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This is for anyone who’s good with science coz I absolutely hate it. ILL BRAINLIST U AND GIVE U 5 STAR TO WHOEVER IS GOOD;) be s
marusya05 [52]

Answer:

A) Oxygen

B) Heat

C)

Explanation:

Hope it helps

4 0
2 years ago
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