1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kumpel [21]
3 years ago
14

Epinephrine (adrenaline) is a hormone secreted into the bloodstream in times of stress. It contains 59.0% C, 7.15% H, 26.20% O,

and 7.65% N and has a molar mass of 183 g/mol. What is its molecular formula
Chemistry
1 answer:
vichka [17]3 years ago
3 0

Answer:

C9H13O3N

Explanation:

Take the atomic mass of C=12.0, H=1.0, O=16.0 and N=14.0.

We can draw a chart (please view this on desktop so to avoid spacing errors):

Let the mass of Epinephrine be 100g.

                             C                       H                          O                              N

mass(g) :              59                      7.15                    26.2                         7.65

no. of moles : 59/12 =4.9167     7.15/1 = 7.15     26.2/16=1.6375 7.65/14=0.5464

(n.o.m. = mass/molar mass)

Ratio:   4.9167/0.5464 =9    7.15/0.5464=13      1.6375= 3      0.5464/0.5464 =1

(divide the n.o.m. by the smallest n.o.m., which is 0.5464 in this case, take the whole numbers)

So, the empirical formula will be: C9H13O3N

But this is still not yet the molecular formula. We have to ensure the molar mass is 183g/mol. Multiply the empirical formula by n.

So, let the molecular formula of Epinephrine be (C9H13O3N)n.

12x9n + 1x13n + 16x3n + 14n = 183

108n + 13n + 48n + 14n = 183

183 n = 183.

n = 1

Hence, the molecular formula is C9H13O3N.

You might be interested in
How do gas particles respond to an increase in volume?
wariber [46]
An increase in the number of gas molecules in the same volume container increases pressure. A decrease in container volume increases gas pressure. An increase in temperature of a gas in a rigid container increases the pressure.
7 0
2 years ago
How many milliliters of milk are in a 1.000-<br> gallon jug?
mart [117]

Answer:

3.785e+6

Explanation:

4 0
3 years ago
Light travels through space at 186,282 miles per second and it takes about 1.3 seconds for light to travel from the moon to Eart
PIT_PIT [208]

The correct method would be multiplying the speed of light by the time it takes to travel from the moon to Earth. This is because:

S=So+V*t

In which:

S= space

So= space at the start (origin)

V=speed or velocity

t=time

By multiplying miles/second by seconds you get miles as a result.

6 0
2 years ago
Read 2 more answers
C2H4+
klasskru [66]

Answer:

A. Theoretical yield = 3.51g

B. %yield = 75%

Explanation:

The balanced equation for the reaction is given below:

C2H4 + 3O2 —> 2CO2 + 2H2O

Molar Mass of O2 = 16 x 2 = 32g/mol

Mass of O2 from the balanced equation = 3 x 32 = 96

Molar Mass of H20 = (2x1) + 16 = 18g/mol

Mass of H2O from the balanced equation = 2 x 18 = 36g

A. From the equation,

96g of O2 produced 36g of H2O

Therefore, 9.35g of O2 will produce = (9.35 x 36)/96 = 3.51g of H2O

Therefore,theoretical yield of water (H2O) = 3.51g

B. Theoretical yield = 3.51

Actual yield = 2.63g

%yield =?

%yield = Actual yield/Theoretical yield x 100

%yield = 2.63/3.51

%yield = 75%

4 0
3 years ago
Give an<br> example of when a plant or animal might<br> use energy they have stored.
olasank [31]

Answer:

hunting for other animals or when they are really hungry

Explanation:

8 0
2 years ago
Other questions:
  • All of the following are examples of carbohydrates except fiber. proteins. starches. sugars.
    9·2 answers
  • A(n) ____________________ is a negatively charged subatomic particle.
    9·1 answer
  • Which of the following fractions can be used in the conversion of 25 m3 to the unit cm3?
    14·1 answer
  • In every balanced chemical equation, each side of the equation has the same number of ____. select all that are true.
    14·1 answer
  • What particle controls the energy of an atom
    12·1 answer
  • To make 1.00 L of 1.00 M NaOH solution, what mass of NaOH needs to be weighed out?
    11·2 answers
  • Express a length of 13.63 m in centimeters.<br> Answer in units of cm.
    12·1 answer
  • 4. Mineral used as fuel.
    10·2 answers
  • When Logan opens a new bottle of carbonated beverage, the sudden release of pressure causes the beverage to bubble up and overfl
    15·1 answer
  • What do all fossils fuels have in common
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!