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
motikmotik
2 years ago
7

In an experiment, students were given an unknown mineral. The unknown mineral was placed in 150 ml of water. Once in the water,

the volume went up to 165 ml. Then when the same object was dried, then massed on a balance. It had a mass of 225 grams. What is the density of the unknown mineral?
Note: You only have to fill in the numerical answer.
Chemistry
1 answer:
Dahasolnce [82]2 years ago
5 0

Answer:

<h2>15 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

But from the question

volume = final volume of water - initial volume of water

volume = 165 - 150 = 15 mL

We have

density =  \frac{225}{15}  = 15 \\

We have the final answer as

<h3>15 g/mL</h3>

Hope this helps you

You might be interested in
Discussion Questions 1. Given the equilibrium equation for a general reaction, A + B  C + D, explain what happens to the reacta
ANTONII [103]

Answer:The equilibrium constant for a given reaction is [concentration of products]/[concentration of reactants].

Explanation:

Equilibrium constant=[concentration of products]/[concentration of reactants]

The concentration of reactant  molecules is maximum at time 0 and it  decreases as the reaction proceeds, The concentration of product molecules increases.At equilibrium the concentration of reactants and products are equal.

All the changes would occur in accordance with the LeChateliers principle.

For the given reaction the following changes would occur:

a When CO is removed from the reaction mixture so the reaction would shift towards right that is in forward direction as we are decreasing the concentration of CO so the system would try to increase the concentration of CO and that can happen by more production of CO.

b Since the above reaction is an endothermic reaction so when we would be adding heat to the system that is when we would increase the temperature  the reaction would shift forwards as  more heat energy is absorbed by reactants  to form more products.

c When more CO₂ is added so more amount of reactants are added to the system so the system would try to decrease the amount of reactants that is CO₂ and hence more amount of products would be formed.The reaction would shift in forward direction.

d Since  this reaction is endothermic in nature so when we remove the heat from reaction hence even less amount of heat is present in the system and so the reaction shift in backward direction as the reaction cannot proceed without enough amount of heat.

8 0
3 years ago
If you repeat an experiment and the result are very different from the result you got the first time the next step would be to w
Bess [88]
You would want to make sure that you have controlled the variables properly, and if you determine that you did then you would repeat the experiment to be sure of the results.
4 0
3 years ago
Give the word and chemical equations (including state symbols) for the reaction of potassium and water
zepelin [54]

Answer:

Zinc is Zn and Magnesium is Mg

7 0
3 years ago
Hi everyone! :)) How is your day going, let me know!
Masja [62]

Answer:

its doing great!

Explanation:

breainleist plss

8 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST
den301095 [7]
The answer is C. Life
Hope this helps! :)
7 0
3 years ago
Other questions:
  • What promotes greater hardness in minerals? A smaller atoms and stronger bonds B larger atoms and weaker bonds C larger atoms an
    9·2 answers
  • PLEASE HELP I'M STUCK
    9·2 answers
  • Suppose that 0.48 g of water at 25∘C∘C condenses on the surface of a 55-gg block of aluminum that is initially at 25∘C∘C. If the
    5·1 answer
  • What is the mass of 4.5 x 10^22 molecules of hydrogen peroxide H2O2
    12·1 answer
  • Which change can be easily be reversed? question 23 options: both a physical and chemical change chemical change physical change
    6·1 answer
  • Which of these is an ex<br> example of a composite material?
    9·1 answer
  • What is one way to decrease carbon?
    12·1 answer
  • Which system sends messages to organs and tissues? excretory muscular nervous circulatory
    9·1 answer
  • Which of the following particles are free to drift in metals?
    15·1 answer
  • Which of the following describes all of the types of water found in the hydrosphere
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!