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
nignag [31]
4 years ago
10

Find the total number of atoms in a sample of cocaine hydrochloride, c17h22clno4, of mass 23.0 mg .

Chemistry
1 answer:
Nataliya [291]4 years ago
3 0
From the periodic table:
mass of carbon = 12 grams
mass of hydrogen = 1 gram
mass of nitrogen = 14 grams
mass of oxygen = 16 grams
mass of chlorine = 35.5 grams
Therefore,
molar mass of <span>c17h22clno4 = 17(12) + 22(1) + 35.5 + 14 + 4(16) = 339.5 grams

number of moles = mass / molar mass
number of moles = (23*10^-3) / (339.5)
number of moles = 6.77 * 10^-5 moles

number of atoms = number of moles * Avogadro's number
number of atoms = 6.77*10^-5 * 6.022*10^-23
number of atoms = 4.079 * 10^-27 atoms</span>
You might be interested in
How many moles of nitrogen are in 38 grams of nitrogen?
Lena [83]
How many grams Nitrogen in 1 mol? The answer is 14.0067. We assume you are converting between grams Nitrogen and mole. You can view more details on each measurement unit: molecular weight of Nitrogen or mol The molecular formula for Nitrogen is N. The SI base unit for amount of substance is the mole. 1 grams Nitrogen is equal to 0.071394404106606 mole. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between grams Nitrogen and mole. Type in your own numbers in the form to convert the units!

7 0
3 years ago
Express the frequency in inverse seconds. n=5--&gt;n=1
Natalija [7]

The frequencies expressed in inverse seconds are 5 s⁻¹  and 1 s⁻¹.

<h3>What is frequency?</h3>

Frequency is the number of complete cycles in a second made by a wave.

F = 1/T

F = n/t

<h3>When n = 5</h3>

F = 5/s =  5 s⁻¹ = 5Hz

<h3>When n = 1</h3>

F = 1/s =  1 s⁻¹ = 1Hz

Learn more about frequency here: brainly.com/question/254161

#SPJ1

4 0
2 years ago
What is the covalent bond for Hydrogen + Chlorine (HCI)
kolbaska11 [484]

Answer:

HCl, also known as hydrochloric acid, has a covalent bond. The hydrogen (H) atom shares an electron with the chlorine (Cl) to form the bond.

Explanation:

Consequently, the bonding electrons in hydrogen chloride are shared unequally in a polar covalent bond. The molecule is represented by the conventional Lewis structure, even though the shared electron pair is associated to a larger extent with chlorine than with hydrogen.

6 0
3 years ago
Sandy puts a paper clip on the table. Then, she puts a magnet near the paperclip. The paperclip begins to move.
Akimi4 [234]
Applied forces/or unbalanced:i hope that helps you
3 0
4 years ago
Read 2 more answers
Hi can anyone answer these two distance and time questions
Likurg_2 [28]
1 is hours and 2 is meters
5 0
3 years ago
Other questions:
  • In an experiment, zinc chlorate decomposed according to the following chemical equation.
    5·2 answers
  • A sample is left on the desk over several hours. On examination, the crystals appear moist, andliquid is forming around them. Th
    9·1 answer
  • Why do pumps require energy?
    13·2 answers
  • Name element atomic mass 26 mass number 58 with charge of 2+
    5·1 answer
  • How is the Delta Hf related to the delta H of <br> a reaction?
    10·2 answers
  • What general information about atomic orbitals is provided by the quantum numbers
    15·1 answer
  • Predict the sign of ΔSo for the following reaction:
    9·1 answer
  • Which radio wave has a higher frequency and carries more energy?????
    6·1 answer
  • Inquiry Extension Consider a reaction that occurs between solid potassium and chlorine gas. If you start with an initial mass of
    11·1 answer
  • The electron configuration of an element is 1s22s22p63s1. Describe what most likely happens when an atom of this element comes n
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!