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
Ksenya-84 [330]
3 years ago
15

A standard backpack is approximately 30cm x 30cm x 40cm. Suppose you find a hoard of pure gold while treasure hunting in the wil

derness. How much mass would your backpack hold if you filled it with the gold? An average student has a mass of 70 kg. How do these values compare?
Chemistry
1 answer:
Blizzard [7]3 years ago
8 0

Explanation:

The dimensions of a standard backpack is 30cm x 30cm x 40cm

The mass of an average student is 70 kg

We know that, the density of gold is 19.3 g/cm³.

Let m be the mass of the backpack. So,

\text{density}=\dfrac{\text{mass}}{\text{volume}}\\\\m=d\times V\\\\m=19.3\ g/cm^3\times (30\times 30\times 40)\ cm^3\\\\m=694800\ g\\\\\text{or}\\\\m=694.8\ kg\approx 700\ kg

An average student has a mass of 70 kg. If we compare the mass of student and mass of backpack, we find that the backpack is 10 times of the mass of the student.

You might be interested in
What type of matter is gravel
GREYUIT [131]

Gravel is a solid, opaque, heterogenous mixture.

5 0
3 years ago
Help! I am in a hurry! Will get brainliest if correct!
stira [4]

Answer:

Should be 3

Iron, cobalt, and nickel

7 0
2 years ago
A chemical test has determined the concentration of a solution of an unknown substance to be 2.41 M. a 100.0 mL volume of the so
Oksana_A [137]

Answer : The molar mass of unknown substance is, 39.7 g/mol

Explanation : Given,

Mass of unknown substance = 9.56 g

Volume of solution = 100.0 mL

Molarity = 2.41 M

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Mass of unknown substance}\times 1000}{\text{Molar mass of unknown substance}\times \text{Volume of solution (in mL)}}

Now put all the given values in this formula, we get:

2.41M=\frac{9.56g\times 1000}{\text{Molar mass of unknown substance}\times 100.0mL}

\text{Molar mass of unknown substance}=39.7g/mol

Therefore, the molar mass of unknown substance is, 39.7 g/mol

5 0
3 years ago
The theory general relativity was discovered by who
svetoff [14.1K]
<span>The theory general relativity was discovered by Albert Einstein </span>
4 0
3 years ago
Identify the element from its location on the periodic table:<br><br> a. 4p^5
mafiozo [28]
The element is Bromine
3 0
3 years ago
Other questions:
  • A 50 g piece of aluminum is heated to 800c and then dropped into cold water, where the metal's temperature drops to 300c.how man
    12·1 answer
  • What were the first 16 elements known in 1760
    5·1 answer
  • A hygroscopic compound readily absorbs water from the air. This water can be removed by gently heating the compound. 5.24 g of a
    13·1 answer
  • If crown b is more dense than crown a then which is pure gold
    7·2 answers
  • Explain how you can predict the products of a simple chemical reaction based on the outermost electron state of atoms, trends in
    15·1 answer
  • Animals need food air and water.which of the following is another need of animals
    13·2 answers
  • This refers to the most powerful means of communicating confidence and conviction A.Posture B.eye contact C.body movement
    15·1 answer
  • Circulatory Quiz - 1 chance
    7·1 answer
  • 46.0 g of barium nitrate is dissolved in 360 g of water. What is the percent concentration of the barium nitrate solute in the s
    12·1 answer
  • Which refers to the bending of a wave as it passes through one medium to another medium?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!