Explanation:
55 kilometers per hour to meters per second
First we have to convert the kilometers to grams;
1 kilometer = 1,000 meters
This means we have;
55000 meters per hour
Converting hour to seconds;
1 hour = 60 minutes
1 minute = 60 seconds
1 hour = 60 * 60 = 3600 seconds
We divide 55000 by 3600;
55000 / 3600 = 15.28 meters per second
The sublevel designation=6f
The allowed values of the magnetic quantum number are: ml=−3,−2,−1,0,+1,+2,+3
The number of orbitals=7
How are these calculated?
- We are given values for the principal and orbital angular momentum quantum numbers: n=6 ,l=3
- The value of n tells us the shell number. The value of l tells us the type of atomic orbital, which here is an "f" orbital. Therefore, the subshell (sublevel) designation is:6f
- For this subshell the allowed values of the magnetic quantum number are: ml=−3,−2,−1,0,+1,+2,+3
- Each value of ml represents one orbital that holds two electrons. Therefore, we can conclude that there are seven orbitals present at the "6f" subshell, so it has a degeneracy of seven.
What are quantum numbers?
- Quantum numbers are used to describe where around a nucleus a particular electron can be found.
- In any given atom, each electron can be described by four quantum numbers.
- These are n,l,m1,ms
- The values that each number can be are based on a set of rules.
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The money lost through the recrystallization process billion
As per the data given in the question,
Mass of aspirin formed =1.366 g
Mass of recrystallized aspirin =0.209 g
Loss of mass of aspirin during recrystallization =1.366-0.209 g=1.157 g
Per cent loss
Cost of 1 mg aspirin =0.0861 cents
cost of 1.157 g or 1157 mg aspirin cent =1 (approximately)
41000 metric tons of aspirin
Loss during production of of aspirin =1
Loss during production of of aspirin
Hence, loss billion
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Answer:
0.70 g
41 %
Explanation:
We can write the Williamson ether synthesis in a general form as:
R-OH + R´-Br ⇒ R-O-R´
where R-OH is an alcohol and R´-Br is an alkyl bromide.
We then see that the reaction occurs in a 1:1 mole ratio to produce 1 mol product.
Therefore what we need to calculate the theoretical yield and percent yield is to compute the theoretical number of moles of 2-butoxynaphthalene produced from 0.51 g 2-naphthol, and from there we can calculate the percent yield.
molar mass 2-naphthol = 144.17 g/mol
moles 2-naphthol = 0.51 g / 144.17 g/mol = 0.0035 mol 2-naphthol
The number of moles of produced:
= 0.0035 mol 2-naphthol x ( 1 mol 2-butoxynaphthalene /mol 2-naphthol )
= 0.0035 mol 2-butoxynaphthalene
The theoretical yield will be
= 0.0035 mol 2-butoxynaphthalene x molar mass 2-butoxynaphthalene
= 0.0035 mol x 200.28 g/ mol = 0.70 g
percent yield= ( 0.29 g / 0.70 ) g x 100 = 41 %
Answer:
taxonomy is the science of classifying organisms and assigning them universally accepted names.
Explanation: