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VLD [36.1K]
4 years ago
6

The formula for cocaine is C17H21N04. What is the percentage of carbon in the

Chemistry
2 answers:
Alekssandra [29.7K]4 years ago
7 0

Answer:

d

Explanation:

Approx. 70%

Explanation:

%Carbon

 

=

 

Mass of carbon

Mass of molecule

 

×

100

%

=

 

17

×

12.011

⋅

g

⋅

m

o

l

−

1

303.39

⋅

g

⋅

m

o

l

−

1

 

×

100

%

 

=

 

?

?

%

PolarNik [594]4 years ago
6 0
The correct answer is d
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The assumptions made in calculating the Michaelis-Menten Equation include
Sauron [17]

Answer:

c) that the formation and decomposition of ES is the same for a period of time

Explanation:

Michaelis-Menten equation :

This model  explain the approach to enzyme kinetics.The Equation shows how a Free enzyme E and Product P is formed depicting by Following equation.

                       E+S⇌ES→E+P

Left side represents

E =enzyme

S=substrate

ES=enzyme-substrate complex

Right side

E= Free enzyme

P= product

c) that the formation and decomposition of ES is the same for a period of time

3 0
4 years ago
Which of the following are conjugate acid/base pairs? Select all that apply.
Setler79 [48]

Answer: HCOOH and HCOO^-

HNO_3 and NO_3-^-

H_2SO_4 and SO_4^{2-}

H_2CO_3 and CO_3^{2-}

Explanation:

According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.

For the given chemical equations:

1. HCOOH(aq)\rightarrow HCOO^-(aq.)+H^+(aq.)

Here, HCOOH is loosing a proton, thus it is considered as an acid and after losing a proton, it forms HCOO^- which is a conjugate base.

2. HNO_3(aq)\rightarrow NO_3^-(aq.)+H^+(aq.)

Here, HNO_3 is loosing a proton, thus it is considered as an acid and after losing a proton, it forms NO_3^- which is a conjugate base.

3. H_2SO_4(aq)\rightarrow SO_4^{2-}(aq.)+2H^+(aq.)

Here, H_2SO_4 is loosing a proton, thus it is considered as an acid and after losing a proton, it forms SO_4^{2-} which is a conjugate base.

4. NaCl and NaOh are not conjugate acid/ base pairs.

5. H_2CO_3(aq)\rightarrow CO_3^{2-}(aq.)+2H^+(aq.)

Here, H_2CO_3 is loosing a proton, thus it is considered as an acid and after losing a proton, it forms CO_3^{2-} which is a conjugate base.

7 0
4 years ago
How many grams of NO are produced from 15.8 g of H2O
Yuki888 [10]

Answer:

26.33 g of NO.

Explanation:

We'll begin by writing the balanced equation to produce NO from H2O. This is given below:

5N2 + 6H2O —> 4NH3 + 6NO

Next, we shall determine the mass of H2O that reacted and the mass of NO produced from the balanced equation. This is illustrated below:

Molar mass of H2O = (2x1) + 16 = 18 g/mol

Mass of H2O from the balanced equation = 6 x 18 = 108 g

Molar mass of NO = 14 + 16 = 30 g/mol

Mass of NO from the balanced equation = 6 x 30 = 180 g

From the balanced equation above,

108 g of H2O reacted to produce 180 g of NO.

Finally, we shall determine the mass of NO produced by the reaction of 15.8 g of H2O.

This is illustrated below:

From the balanced equation above,

108 g of H2O reacted to produce 180 g of NO.

Therefore, 15.8 g of H2O will react to produce = (15.8 x 180)/108 = 26.33 g of NO.

Therefore, 26.33 g of NO were obtained from the reaction.

3 0
3 years ago
One theory that has been proposed about the information of the universe.
expeople1 [14]
The big bang theory is one of the multipl about the universe

5 0
3 years ago
Read 2 more answers
Plz say if it is a b c or d on both
Digiron [165]

Answer:

whats both

Explanation:

7 0
3 years ago
Read 2 more answers
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