2 years ago

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]2 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.

You might be interested in

When you dissolve an antacid tablet in water and it produces bubbles, what kind of change is this?

prisoha [69]

Answer: B. a chemical change

Explanation:

3 0

2 years ago

Where is the temperate zone? A close to the equator B along bodies of water C next to the North and South Poles D between the po

LenKa [72]

Answer:

I think A close to the equator

5 0

2 years ago

Which elements usually lose their valence electrons when they bond

masya89 [10]

Metals, for example Cesium and Francium

5 0

3 years ago

Read 2 more answers

Do wind up clocks need batteries? -like the non wired ones.

Sphinxa [80]

No, why? Cause if you're winding up the clock it's basically doing what it needs to do. So there's no need for batteries.. I hope my sad sentence make sense :p

6 0

3 years ago

You are instructed to create 900. mL of a 0.29 M phosphate buffer with a pH of 7.8. You have phosphoric acid and the sodium salt

Aleksandr [31]

Answer:

B and C

Explanation:

When we have to do a buffer solution we always have to choose the reaction that has the pKa closer to the desired pH value. When we find the pKa values we will obtain:

$pKa_1=-Log[6.9x10^-^3]=2.16$

$pKa_2=-Log[6.2x10^-^8]=7.20$

$pKa_3=-Log[4.8x10^-^13]=12.31$

The closer value is pKa2 with a value of 7.2. Therefore we have to use the second reaction. In which $H_2PO_4^-^1$ is the acid and $HPO_4^-^2$ is the base. Therefore the answer for the first question is B and the answer for the second question is C.

8 0

2 years ago