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meriva
3 years ago
8

How many inches is in 10 cm? Use dimensional analysis to show your work.

Chemistry
1 answer:
jeka57 [31]3 years ago
4 0

Answer:

about 3.937

Explanation:

There are exactly 2.54 cm in an inch so we have

10cm/1 * 1inch/2.54cm = 10inch/2.54 = 3.937

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How many moles of carbon and hydrogen are needed to produce 10 mol of ethylene
alekssr [168]
I think 1.00 mol sorry if I’m wrong
7 0
3 years ago
Calculate the adjusted retention times for both pentafluorobenzene and benzene if the elution time for unretained solute is 1.06
vovangra [49]

Answer:

Pentafluorobenzene: 11,92 min

Benzene: 12,14 min

Explanation:

<em>Retention time of pentafluorobenzene is 12,98 min and 13,20 min of benzene.</em>

The adjusted retention time is the time an analyte spends in the column not the stationary phase. As time of unretained solute is 1,06 min the adjusted retention time for an analyte is:

tr' = tr - 1,06min

For pentafluorobenzene:

tr' = 12,98min - 1,06min = <em>11,92 min</em>

For benzene:

tr' = 13,20 - 1,06min = <em>12,14 min</em>

<em></em>

I hope it helps!

3 0
2 years ago
Several years ago, a group of scientists discovered evidence for a new element not found on the periodic table. Most
MatroZZZ [7]

<em>It is beneficial because it provides stronger support for the evidence related to the discovery</em>

<u>Answer:</u> <em>The correct answer is the second option that is given with shows it is beneficial.</em>

<u>Explanation:</u>

The discovery of an element whose properties are known from before would make it easier for the scientists to know the properties of elements and its uses after the discovery of element.

Since the elements’ properties are already known as element that possesses these properties and will look forward to find that and once the element is found the element can be named and can be used directly, since its uses are already known.

3 0
2 years ago
Which compounds are electrolytes
KengaRu [80]

Answer:

Calcium.

Potassium.

Chlorine.

Magnesium.

Sodium.

Phosphate.

Explanation:

4 0
2 years ago
(Plz answer this)
motikmotik

<span><span>NaOH + HCl --> NaCl + H2Oso here 1 mole of NaOH reacts with 1 mole of HCl. Hence it is required to convert the amount of HCl and NaOH in to moles.Number of HCl moles Concentration of the solution = 2.00M = 2 mol/ literVolume of the solution           = 22.4 mlNumber of HCl moles              = (2mol/1000 ml)*22.4 ml                                            =  0.0448 mol</span></span>
7 0
3 years ago
Read 2 more answers
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