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kati45 [8]
3 years ago
9

Science Laboratory Safety Procedures

Chemistry
1 answer:
Lorico [155]3 years ago
5 0
You are not allowed to consume anything you are studying/ researching such as chemicals
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Answer the question please
OLEGan [10]

Answer:

Density=1.006 g/cm^3 .

Detailed explanation in screenshot attached below

Explanation:

5 0
2 years ago
How many peaks are in the proton spin decoupled 13c nmr spectrum of 1,3,5-trinitrobenzene?
Natalka [10]

There are 2  peaks are in the proton spin decoupled 13C NMR spectrum of 1,3,5-trinitrobenzene .

The 13C NMR spectrum give the peak which is directly about the carbon skeleton not just the proton attached to it  . The number of signals tell us how many different carbons or set of equivalent carbons . The splitting of a signal tells us how many hydrogens  are attached to each carbon.

In 1,3,5-trinitrobenzene molecule , there are 2  peaks are in the proton spin decoupled 13C NMR spectrum three carbon give one signal and another three carbon give another one signal .

To learn more about NMR spectrum

brainly.com/question/9812005

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4 0
2 years ago
How is the scientific meaning of salt different from the common meaning of salt
kondaur [170]
The scientific meaning of salt is an ionic compound that is formed when an acid and a base reaction take place and is neutralized.
The common meaning of salt (table salt) is specifically the organic mineral of sodium chloride (NaCl) and is digestible.
Ionic salts are often not digestible (or not commonly digested, anyway)
7 0
3 years ago
A chemist needs to create a series of standard Cu2+(aq) solutions for an absorbance experiment. For the first standard, he uses
morpeh [17]

Answer:

0.01 M

Explanation:

The chemist is performing a serial dilution in order tyo obtain the calibration curve for the instrument.

First we must obtain the concentration of the solution in the 250ml flask from

C1V1 = C2V2

Where;

C1 = concentration of the stock solution

V1 = volume of the stock solution

C2 = concentration of the diluted solution

V2= volume of the diluted solution

2.61 × 10 = C2 × 250

C2 = 2.61 × 10/250

C2 = 0.1 M

Hence for solution in 100ml flask;

0.1 × 10 = C2 × 100

C2 = 0.1 × 10/100

C2 = 0.01 M

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3 years ago
Please help I will reward brainly! NEED DONE ASAP
S_A_V [24]
Because it doesn't get direct sunlight so it gets cool
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