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3 years ago

A _____ is a new substance formed in a chemical reaction.

Chemistry

1 answer:

Lorico [155]3 years ago

5 0

B. product
Think about it like this: a company produces products, not coefficients.

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Why is Hawaii made of volcanoes? <br>

Vadim26 [7]

Answer:

Explanation:

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2 years ago

What is the purpose of the chemical ammonia (NH3) in hair dyes?

Alinara [238K]

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Explanation: Hope this helps! :D

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2 years ago

Question 5 of 5

grandymaker [24]

Answer:

Explanation:

the SI unit for density is the kilogram per Cubic meter

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3 years ago

What is the origin of fahrenheit and centigrade temperature scales?.

padilas [110]

Answer:

The 18th-century German physicist Daniel Gabriel Fahrenheit originally took as the zero of his scale the temperature of an equal ice-salt mixture

Explanation:

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2 years ago

Read 2 more answers

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

vichka [17]

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.

3 0

3 years ago