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
Nina [5.8K]
3 years ago
6

(03.03 MC)

Chemistry
1 answer:
Anit [1.1K]3 years ago
7 0

Answer: C

Explanation: Picture attached.

You might be interested in
All the elements of a family in the periodic table have what feature in common?a)they all have similar chemical properties.b)the
Vadim26 [7]
<span>Answer: D. They all have the same number of electrons in the electron cloud</span>
5 0
3 years ago
Read 2 more answers
Determine the empirical formula of a compound containing 48.38 grams of carbon, 6.74 grams of hydrogen, and 53.5 grams of oxygen
Darya [45]

Answer: The empirical formula of the compound becomes CH_2O

<u>Explanation:</u>

The empirical formula is the chemical formula of the simplest ratio of the number of atoms of each element present in a compound.

We are given:

Mass of C = 48.38 g

Mass of H = 6.74 g

Mass of O = 53.5 g

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

To formulate the empirical formula, we need to follow some steps:

  • <u>Step 1:</u> Converting the given masses into moles.

Molar mass of C = 12 g/mol

Molar mass of H = 1 g/mol

Molar mass of O = 16 g/mol

Putting values in equation 1, we get:

\text{Moles of C}=\frac{48.38g}{12g/mol}=3.023 mol

\text{Moles of H}=\frac{6.74g}{1g/mol}=6.74 mol

\text{Moles of O}=\frac{53.5g}{1g/mol}=3.34 mol

  • <u>Step 2:</u> Calculating the mole ratio of the given elements.

Calculating the mole fraction of each element by dividing the calculated moles by the least calculated number of moles that is 3.023 moles

\text{Mole fraction of C}=\frac{3.023}{3.023}=1

\text{Mole fraction of H}=\frac{6.74}{3.023}=2.23\approx 2

\text{Mole fraction of O}=\frac{3.34}{3.023}=1.105\approx 1

  • <u>Step 3:</u> Taking the mole ratio as their subscripts.

The ratio of C : H : O = 1 : 2 : 1

Hence, the empirical formula of the compound becomes CH_2O

5 0
3 years ago
A diamond’s density is 3.2 g/cm3. <br> Determine the volume of a diamond that has a mass of 1 g.
svetlana [45]

Answer:

https://socratic.org/questions/diamond-has-a-density-of-3-52-g-ml-what-is-the-volume-in-cubic-centimeters-of-a-

5 0
3 years ago
Read 2 more answers
I have attached an image. You can see the answer choices as well as the question. Pls help me. 25 points
sashaice [31]

Answer:

B

Explanation:

When it freezes, it will be a solid. The molecules will barely move, not as much as in the other answer choices.  

7 0
2 years ago
Read 2 more answers
Suppose that CO2 in the atmosphere was held at a constant, natural level for a few thousand years. Then, CO2 was added to double
MissTica

Answer:

temperature before the increase in CO2 was a few degrees lower than temperature after the increase.

Explanation:

CO2 in the atmosphere has the property of trapping heat by absorbing it. So, with increase in the level of CO2 in the atmosphere the more heat will be absorbed by it and hence the temperature before the increase in CO2 was a few degrees lower than temperature after the increase.

Level of CO2 ∝ Temperature of the Earth

8 0
3 years ago
Other questions:
  • Explain why the lattice energy of CaSe is approximately 4 times as large as that of KBr. Check all that apply. Check all that ap
    14·1 answer
  • 6.24 x 10^24 atoms Na to moles Na
    6·1 answer
  • Which equation is correctly balanced?
    5·1 answer
  • One liter equals the volume of a 10 cubic centimeters. True False
    9·2 answers
  • How many miles of O2 can be produced by letting 12.00 miles of KC103 react?
    13·1 answer
  • Which of the following is true about nuclear fusion
    10·2 answers
  • Identifying Characteristics of the Gas Laws
    14·1 answer
  • Why wasn’t sodium hydroxide used in the synthesis of divanillyl oxalate, instead of triethylamine?
    9·2 answers
  • Calculate the molarity when 28.91 grams of nacl is dissolved in 352 ml of water
    7·1 answer
  • you are give a bottle that contains 4.59cm3 of a metalic solid .the total mass of the bottle plus solid =35.66g .the empty bottl
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!