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
cluponka [151]
3 years ago
14

a rock weighing 75.0g placed in a graduated cylinder displacing the volume from 31.4 ml to 36.5 ml what is density of the rock i

n grams/cubic centimeters?
Chemistry
1 answer:
andrezito [222]3 years ago
7 0
Answer:

<span>ρ≅13.0⋅g⋅m<span>L<span>−1</span></span></span> = <span>13.0⋅g⋅c<span>m<span>−3</span></span></span>

Explanation:

<span>Density=<span>MassPer unit Volume</span></span> = <span><span>75.0⋅g</span><span><span>(36.5−31.4)</span>⋅mL</span></span> <span>=??g⋅m<span>L<span>−1</span></span></span>

Note that <span>1⋅mL</span> = <span>1⋅c<span>m<span>−3</span></span></span>; these are equivalent units of volume; 
i.e. <span>1⋅c<span>m3</span></span> = <span>1×<span><span>(<span>10<span>−2</span></span>⋅m)</span>3</span>=1×<span>10<span>−6</span></span>⋅<span>m3</span>=<span>10<span>−3</span></span>⋅L=1⋅mL</span>.

You might be interested in
The following reaction was carried out in a 3.25 L reaction vessel at 1100 K:
kipiarov [429]

Answer : The value of reaction quotient Q is, 0.498

Explanation:

Reaction quotient (Q) : It is defined as the measurement of the relative amounts of products and reactants present during a reaction at a particular time.

The given balanced chemical reaction is,

C(s)+H_2O(g)\rightarrow CO(g)+H_2(g)

The expression for reaction quotient will be :

Q=\frac{[CO][H_2]}{[H_2O]}

In this expression, only gaseous or aqueous states are includes and pure liquid or solid states are omitted.

Now we have to calculate the concentration of H_2O,CO\text{ and }H_2

\text{Concentration of }H_2O=\frac{\text{Moles of }H_2O}{\text{Volume of solution}}=\frac{13.3mol}{3.25L}=4.09M

and,

\text{Concentration of }CO=\frac{\text{Moles of }CO}{\text{Volume of solution}}=\frac{3.40mol}{3.25L}=1.05M

and,

\text{Concentration of }H_2=\frac{\text{Moles of }H_2}{\text{Volume of solution}}=\frac{6.30mol}{3.25L}=1.94M

Now put all the given values in the above expression, we get:

Q=\frac{(1.05)\times (1.94)}{(4.09)}=0.498

Thus, the value of reaction quotient Q is, 0.498

3 0
3 years ago
Hurry i only have till today to finsh this!
Leona [35]

Answer:

do it yourself

Explanation:

5 0
3 years ago
Read 2 more answers
Write the following numbers in standard notation. Use a terminal decimal point when needed.
maw [93]

In this case, when converting scientific notation to standard notation, we simply have to multiply the given number by 10^{x}x.

The answer will be 7.510^{2}  = 7.5100 = 750

A standard notation is a form of writing a given number, an equation, or an expression in a form that follows certain rules. For example, 4.5 billion years is written as 4,500,000,000 years.

Learn more about standard notation here:

brainly.com/question/10253124

#SPJ4

8 0
1 year ago
What did the scientists have to consider before releasing the dragonflies into the wild? Why?
pentagon [3]
Maybe they had to consider the habitat to make sure the habitat they were releasing the dragonflies into would be appropriate for the dragonflies.
3 0
3 years ago
Read 2 more answers
What is the nucleus of an atom split
larisa [96]
In nuclear physics and nuclear chemistry, nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits<span> into smaller parts (lighter </span>nuclei<span>). Hope this helps</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Two atoms bonded together will remain some distance apart, minimizing the Question 1 options: A) potential energy of the bond. B
    10·1 answer
  • How many milliliters are equal to 0.399195L
    13·1 answer
  • Which element has the largest atomic radius
    8·2 answers
  • Salt dissolves in water because salt is held together by:
    12·1 answer
  • Chemicals that help chemical reactions occur at faster rates in living organisms are known as _______.
    10·2 answers
  • Raina is ready to start taking photographs at a crime scene after she secured the crime scene. Which photos should she take firs
    15·1 answer
  • Which of the following is in the correct order of boiling points for NaNO₃, CH₃OH, C₂H₆, and Ne?A) Ne &lt; CH₃OH &lt; C₂H₆ &lt;
    10·1 answer
  • What is the iupac name of CH3-CH2CH(CH3)CH2-COOH​
    9·1 answer
  • Explain the process of fading of a carpet upon repeated exposure to sunlight?
    7·1 answer
  • How does global warming affect sea levels?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!