Answer:
16.8128 grams of sodium azide is needed
Explanation:
2NaN3 = 2Na + 3N2
molar mass of NaN3 =
molar mass of N2
moles of N2 =
moles=mass/R.F.M
16.55÷42 = 0.3940
mole ratio=
2NaN3 : 3N2
3 = 0.3940
2=?
Mass of sodium azide =64×0.2627
=16.8126
Answer:
organic chemistry
Explanation:
There are many branches of chemistry. Some of them are physical chemistry, analytical chemistry, inorganic chemistry and organic chemistry.
A chemist is testing the quality of a wine produced by a vineyard. It means he will test the structure, properties, and preparation of wine. All these tests comes under organic chemistry.
Hence, the correct option is (d) "organic chemistry"
Eye
Explanation:
Vitreous humor is found in the human eye and other animals.
It is a gel that fills the space between the lens and retina of the eye. This matter helps to keep the shape of the eye in place by maintaining a constant pressure in the eye.
It is typically made up of water, gelatinous and transparent.
Learn more:
Human eye brainly.com/question/8032392
Color in the eye brainly.com/question/9434044
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x = 20 long tables
y = 5 round table
Explanation:
We have the following system of equations:
x + y = 25
8x + 6y = 190
From the first equation we have:
x = 25 - y
And we replace x in the second equation:
8(25 - y) + 6y = 190
200 - 8y + 6y = 190
200 - 2y = 190
200 - 190 = 2y
10 = 2y
y = 5
Now we insert the value of y in the next equation:
x = 25 - y
x = 25 - 5
x = 20
Learn more about:
system of equations
brainly.com/question/1748197
brainly.com/question/1658819
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Answer:
To test the accuracy of a hypothesis or any findings that have already been made
Explanation:
by performing experiments scientists get to test out any questions they have
