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
Citrus2011 [14]
3 years ago
12

What is the mass of a cube measuring 3cm on each side that had a density of 8.1g/cm3?

Chemistry
1 answer:
Hunter-Best [27]3 years ago
6 0

Answer:

48.6 g

Explanation:

Given data:

Length of one side = 3 cm

Density of cube = 8.1 g/cm³

Mass of cube = ?

Solution:

First of all we will calculate the volume of cube.

V = length × height × width

V = 3 cm × 3cm× 3cm

V = 27cm³

Now we will determine the mass by using density formula.

d = m/v

d = density

m = mass

v = volume

8.1 g/cm³ = m/ 27 cm³

m = 8.1 g/cm³ ×27 cm³

m = 48.6 g

You might be interested in
What is the overall enthalpy of reaction for the equation shown below?
Rudiy27

Answer:

ΔH₁₂ = -867.2 Kj

Explanation:

Find enthalpy for 3H₂ + O₃ => 3H₂O given ...

2H₂ + O₂ => 2H₂O      ΔH₁ = -483.6 Kj

        3O₂ => 2O₃        ΔH₂ = + 284.6 Kj

_____________________________

3(2H₂ + O₂ => 2H₂O) => 6H₂ + 3O₂ => 6H₂O       (multiply by 3 to cancel O₂)

6H₂ + 3O₂ => 6H₂O        ΔH₁ = 3(-483.6 Kj) = -1450.6Kj

          2O₃ => 3O₂           ΔH₂ = -284.6Kj              (reverse rxn to cancel O₂)

_______________________________

6H₂ + 2O₃ => 6H₂O         ΔH₁₂ = -1735.2 Kj       (Net Reaction - not reduced)

________________________________

divide by 2 => target equation (Net Reaction - reduced)

3H₂ + O₃ => 3H₂O            ΔH₁₂ = (-1735.2/2) Kj = -867.2 Kj    

4 0
3 years ago
I
Damm [24]

Answer: the answer is 18

3 0
3 years ago
Swer questions 12 B D 12 Classify each model A-D as either an ele- ment, a compound, or a mixture. Explain your reasoning for ea
MrRissso [65]

Answer:

13-b

Explanation:

because 13-b is close to a and 12

3 0
2 years ago
A radioactive nuclide that is used for geological dating has an atomic number of 19 and mass number 40. Which is the symbol of t
Alina [70]
The mass number goes on top, and the atomic number goes on bottom. 
Therefore, the answer is C:
40
     K
19

7 0
3 years ago
Read 2 more answers
Which temperature would be most appropriate on a hot summer day: 0 Degrees Celsius, 35 Degrees Celsius, or 90 Degrees Celsius?
vampirchik [111]

Answer:

1. For a hot summer day, 35 degrees Celsius is most appropriate.

2. For room temperature, 20 degrees Celsius is most appropriate.

3. Aluminum's density is found by dividing mass by volume. 45 / 15 = 3 g/mL. The density is 3 g/mL.

4. Volume is found by multiplying length x width x height. 2cm x 5cm x 4cm equals 40 cm. We then divide the mass by volume to find density. 80 / 40 = 2 g/cm³. The density is 2 g/cm³.

6 0
3 years ago
Other questions:
  • Describe at least two differences between ionic and covalent bonds.
    9·1 answer
  • Why does water have a high boiling and a low freezing point?
    5·1 answer
  • 16. The atomic number of an atom is always equal to the total number of
    11·1 answer
  • Turning milk into plastic easy
    5·1 answer
  • How many moles of sodium chloride are contained in 779.3 mL of a 0.218 M solution?
    9·1 answer
  • What is the difference between material resources and energy resources?
    14·1 answer
  • Why would a metal house not be a good idea in Florida or Alaska?
    9·2 answers
  • Define adhesion and give an example?
    14·1 answer
  • Which two observers would be experiencing the same apparent solar time?
    11·1 answer
  • For each ionic compound formula, identify the main group to which X belongs: (c) X2SO4.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!