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dedylja [7]
3 years ago
11

How many penicillin molecules would you have if you had a total of 36 hydrogen atoms? What would be the total atomic mass?

Chemistry
1 answer:
jeyben [28]3 years ago
8 0

Answer:

Explanation:

Molecular formula of penicillin  = C₁₆ H₁₈ N₂ O₄S

No of hygrogen atoms = 36

No of molecules = 36 / 18 = 2

molecular weight = 334 amu

molecular weight of 2 molecules = 334 x 2 = 668 amu.  

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Question 6
hodyreva [135]

Answer:

0.00688 moles

Explanation:

The molarity ratio looks like this:

Molarity = moles / volume (L)

After you convert mL to L, you can plug the values into the equation and simplify to find moles.

27.5 mL / 1,000 = 0.0275 L

Molarity = moles / volume                         <----- Molarity ratio

0.250 M = moles / 0.0275 L                      <----- Insert values

0.00688 = moles                                       <----- Multiply both sides by 0.0275

4 0
2 years ago
What is the isotopic notation for phosphorus
den301095 [7]

Answer:

Name Phosphorus

Symbol P

Atomic Number 15

Atomic Mass 30.974 atomic mass units

Number of Protons 15

Explanation:

3 0
3 years ago
CH3CH3Li ionic or covalent
vampirchik [111]

Answer: CH3CH3Li is in fact Ionic!

Explanation:

4 0
2 years ago
When was the idea of an atom first developed? Describe this theory.
malfutka [58]

The existence of an atom was first suggested by Democritus, the idea is then developed in 1803 by John Dalton.

According to Dalton's atomic theory, matter is made up of atoms which are inseparable and can not be destroyed further. For a given element, all atoms have identical mass and properties. Atoms of two different elements combine to form compounds and rearrangement of these atoms results in chemical reaction.


7 0
3 years ago
A sample of n2 effuses in 255 s. how long will the same size sample of cl2 take to effuse?
7nadin3 [17]
For this problem, we use Graham's Effusion Law to find out the rate of effusion of chlorine gas. The formula is as follows:

R₁/R₂ = √(M₂/M₁)

Let 1 be N₂ while 2 be Cl₂

255/R₂ = √(28/70.8)
Solving for R₂,
R₂ = 405.5 s

<em>Thus, it would take 405.5 s to effuse chlorine gas.</em>
4 0
3 years ago
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