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
Tatiana [17]
4 years ago
9

If you are given the number of molecules in an unidentified chemical compound, can you calculate the number of moles in this sam

ple?
yes, because you know that each mole contains 6.02 x 1023 molecules

yes, as long as you can also measure the mass of the sample

no, because the number of moles depends on the volume of the sample

no, because the number of moles depends on the identity of the substance
Chemistry
2 answers:
natta225 [31]4 years ago
6 0
3rd one i hope that helps

sasho [114]4 years ago
6 0

Answer:

The correct option is A

Explanation:

Avogadro's number (6.02 × 10²³) is used to calculate the actual number of ions/atoms/moles present in the molecules of a chemical compound. To do that, avogadro's number is multiplied by the number of molecules of the compound - this is because the number of atoms/ions/moles present in one mole of any substance/compound is 6.02 × 10²³. Hence, one can calculate the the number of moles in the sample because the avogadro's number and the number of molecules of the unknown sample is known.

You might be interested in
What is the mass (in grams) of 9.83 × 1024 molecules of methanol (CH3OH)?
Ber [7]
<span>523 grams First, calculate the molar mass of CH3OH Atomic weight of carbon = 12.0107 Atomic weight of hydrogen = 1.00794 Atomic weight of oxygen = 15.999 Molar mass of CH3OH = 12.0107 + 4 * 1.00794 + 15.999 = 32.04146 Now determine how many moles you have by dividing the number of atoms by avogadro's number moles = 9.83 x 10^24 / 6.0221409 x 10^23 = 16.3231 Now multiply the number of moles by the molar mass 16.3231 * 32.04146 = 523.0159557 Since we only have 3 significant figures, round the result to 3 significant figures. 523.0159557 grams = 523 grams</span>
5 0
3 years ago
A measure of kinetic energy of particle motion within a substance is_____.
ratelena [41]

Answer: Option (c) is the kinetic energy.

Explanation:

The kinetic energy present within the particles of a substance is known as thermal energy. Measure of average kinetic energy of particles of a substance is known as temperature.

Whereas heat defined as the transfer of thermal energy from a hot object to a cold object.

Enthalpy is defined as the heat gained or lost by a substance in a chemical reaction.

Thermodynamics is the study of relation between heat and work with chemical or physical changes.

Thus, we can conclude that a measure of kinetic energy of particle motion within a substance is temperature.

4 0
3 years ago
Read 2 more answers
Define and give an example of an acid and of a base.
Debora [2.8K]

A Brønsted-Lowry acid is defined as a compound that gives hydronium ions to another compound—for example, hydrochloric acid gives H+ ions to compounds it reacts with. Brønsted-Lowry bases are compounds that can accept hydronium ions—when ammonia gets a hydronium ion from HCl, it forms the ammonium ion.

5 0
3 years ago
DNA replication takes place
I am Lyosha [343]

Answer:

DNA replication takes place in the chromosome which is located in the nucleus of a cell.

Explanation:

8 0
3 years ago
The gases carbon dioxide, oxygen, and argon are mixed in a container. All gases have the same partial pressure, and the total pr
polet [3.4K]
The partial pressure of argon can be calculated simply by dividing the total pressure by 3. This gives an answer equivalent to 10893.33 Pa. The clue behind this is the statement "a<span>ll gases have the same partial pressure". This follows Dalton's Law of Partial Pressures which states that the total pressure is equal to the sum of the individual partial pressures.</span>
4 0
3 years ago
Other questions:
  • The most common isotope of nitrogen is nitrogen-14, or 14N. Which of the following atoms has the same number of neutrons as 14N?
    5·1 answer
  • Warm air rises because of its
    9·2 answers
  • An electron has a charge identical to that of
    7·1 answer
  • A mixture of 0.600 mol of bromine and 1.600 mol of iodine is placed into a rigid 1.000-L container at 350°C. Br2(g) + I2(g) 2IBr
    6·1 answer
  • HELP ASAP. NEED THIS DONE
    8·1 answer
  • Each turn of the citric acid cycle generates one ATP and ___ additional energy-rich molecules: __________. View Available Hint(s
    10·1 answer
  • Molecular iodine,
    7·1 answer
  • How does energy loss account for the relative proportions found in ecosystems.
    12·1 answer
  • An arctic weather balloon is filled with 38.5 L of helium gas inside a prep shed. The temperature inside the shed is 8. °C. The
    15·1 answer
  • How many molecules are there in 4372 grams of Na2SO4?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!