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lisov135 [29]
3 years ago
10

What is the appearance of the signal corresponding to the CH₂ protons in the 1H NMR spectrum of ethyl methyl ether, CH₃CH₂OCH₃?

Chemistry
1 answer:
Tems11 [23]3 years ago
7 0

Answer: option C. a quartet

Explanation:

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Two samples of matter differ in temperature by 20°C. What is the difference in temperature of these two samples using the Kelvin
anyanavicka [17]

Answer:

The difference is 293.15 Kelvin.

Explanation:

Given data:

Temperature difference of matter = 20°C

Temperature difference of matter in kelvin = ?

Solution;

Formula:

0°C +273.15

now we will put the values instead of 0.

20°C + 273.15 = 293.15 K

Thus, the temperature difference between two sample is 293.15 K.

5 0
3 years ago
If you have 1.29 moles of NaCl in 4 liters of solution, what is the molarity of the solution?
Illusion [34]

Answer:

0.32M

Explanation:

Given parameters:

Number of moles of NaCl  = 1.29moles

Volume of solution = 4liters  = 4dm³

Unknown:

Molarity of solution = ?

Solution:

Molarity is one the ways of expressing the concentration of a solute in a solution. It is given as;

         Molarity  = \frac{number of moles }{volume}

The unit is given as M which is mol/dm³

    Input the parameters and solve;

           Molarity  = \frac{1.29}{4}    = 0.32mol/dm³ or 0.32M

7 0
3 years ago
How many grams of Co are needed to react with an excess of fe203 to produce 156.2 g FE? show your work.
Gekata [30.6K]

The reaction is given as

Fe2O3 (s)+ 3CO(g)--->3CO2(g)+ 2Fe(s)

No.of moles=mass in gram/molar mass

As for Fe mole =156.2g/55.847=2.7969~2.797

The ratio b/w CO and Fe is 3:2

Moles of CO needed= 2.797x3/2=4.1955

Mass of CO needed= 4.195mol x 28.01g/mol= 117.515g

8 0
3 years ago
The use of microorganism in our day to day life is.................
Ipatiy [6.2K]

Explanation:

The use of microorganism in our day to day life is making medicine.

7 0
2 years ago
Do guitar strings deform? and how??
galina1969 [7]

Answer:

yes; and because of how roughly they are played.

Explanation:

5 0
3 years ago
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