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qwelly [4]
3 years ago
10

Why is it important to exposing sodium borohydride to moisture?

Chemistry
1 answer:
disa [49]3 years ago
4 0

1. Sodium borohydride is a mild reductant, but water can amplify its reactivity and make it too strong of a reductant. 2. Sodium borohydride ignites when it comes into contact with water. 3. Sodium borohydride is hygroscopic and when it reacts with water it loses a hydride and no longer can be used as a hydride source.

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A student measures the volume of a solution to be 0.01370 l. How many significant digits are in this measurement?
Mkey [24]

A student measures the volume of a solution to be 0.01370 have 5 significant digits in this measurement.

<h3>What are significant digits?</h3>

The significant digits are the minimum number from zero to nine for reporting any measurement where the digits are uncertain.

The significant digits starting from zero are not significant digits, decimal is not a significant digit, and ending zero after the decimal are significant digits.

Therefore, the student measures the volume of a solution to be 0.01370 5 significant digits are in this measurement.

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7 0
2 years ago
Which will have the MOST kinetic energy?
Alenkasestr [34]

Answer:

should be B

because the player has more mass than the puck

Explanation:

7 0
3 years ago
What are some foods that require dry ice
Bond [772]
Doesn’t require it but can be used with red meat and seafood
6 0
3 years ago
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what is the boiling point of a 0.321 m aqueous solution of NaCl. Enter your rounded answer with 3 decimal places.
Ronch [10]

Answer:

I believe the rounded place is 100.333.

3 0
3 years ago
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ompare your TLC analysis with the results of the column chromatography. More polar molecules move more slowly through silica tha
Assoli18 [71]

Biphenyl will have a higher R value than the Methyl Orange.

Explanation:

Biphenyl is a aromatic hydrocarbon and it is a nonpolar molecule.

Methyl Orange is a organic compound with a -SO₃⁻Na⁺ polar functional group which will induce a high polarity in the compound.

You may find the chemical structures of both molecules in the attached picture.

Column chromatography, which use as stationary phase silica gel, is a good technique for separation of the Methyl Orange from Biphenyl.

Being a non-polar molecule,  Biphenyl will have a higher R value than the Methyl Orange.

To separate them you use a appropriate solvent as eluent, as exemple chloroform, and Biphenyl will elute first from the column and after that, as a separate phase, Methyl Orange will elute thus separating them.

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chromatography

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3 years ago
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