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
mel-nik [20]
3 years ago
6

Three samples, each of a different substance, are weighed and their volume is measured. The results are tabulated. List the subs

tances in order of decreasing density. Mass volume substance i 12.0 g 10.0 ml substance ii 10.0 kg 10.0 l substance iii 10.0 mg 12.0 μl
Chemistry
1 answer:
barxatty [35]3 years ago
8 0
<h3>Answer;</h3>

                                 Substance i > Substance ii > Substance iii

<h3>Explanation:</h3><h3><em><u>Substance i</u></em><em> :</em></h3>

Data Given;

                   Density  =  ?

                   Mass  =  12 g  

                   Volume  =  10 mL

Formula Used;

                   Density  =  Mass ÷ Volume

Putting Values,

                   Density  =  12 g ÷ 10 mL

                   Density  =  1.2 g.mL⁻¹

<h3><em><u>Substance ii</u></em><em> :</em></h3>

Data Given;

                   Density  =  ?

                   Mass  =  10 Kg  =  10000 g

                   Volume  =  10 L  =  10000 mL

Formula Used;

                   Density  =  Mass ÷ Volume

Putting Values,

                   Density  =  10000 g ÷ 10000 mL

                   Density  =  1 g.mL⁻¹

<h3><em><u>Substance iii</u></em><em> :</em></h3>

Data Given;

                   Density  =  ?

                   Mass  =  10 mg  =  0.01 g

                   Volume  =  12.0 μl  =  0.012 mL

Formula Used;

                   Density  =  Mass ÷ Volume

Putting Values,

                   Density  =  0.01 g ÷ 0.012 mL

                   Density  =  0.833 g.mL⁻¹

You might be interested in
The combustion reaction of magnesium results in what compound?
Tasya [4]
C. MgO because mg+o= MgO
7 0
3 years ago
Read 2 more answers
Find the mass of 4.5 moles of H3PO4
Contact [7]

Hey there!

H₃PO₄

Find molar mass.

H: 3 x 1.008 = 3.024

P: 1 x 30.97 = 30.97

O: 4 x 16 = 64

---------------------------------

                  97.994 grams

The mass of 1 mole of H₃PO₄ is 97.994 grams.

We have 4.5 moles.

97.994 x 4.5 = 440

The mass of 4.5 moles of H₃PO₄ is 440 grams.

Hope this helps!

6 0
3 years ago
Which of the following is the best hypothesis?
DerKrebs [107]

Answer:

B.) If sodium carbonate is added to vinegar, the reaction will absorb heat.

Explanation:

A.) is incorrect because this is not testable. Rather, it is just an opinion that cannot be proven correct or incorrect.

B.) is correct because this statement is testable. Tests need to be run to determine the accuracy of the statement.

C.) is incorrect because this statement explains something that does not need to be tested. It is an example of a physical change when one tears a piece of paper.

D.) is incorrect because this is already a true statement. It is obvious that not all reactions absorb/release heat. While tests could be run to further prove this statement true, it is already considered accurate.

4 0
2 years ago
Read 2 more answers
What is the noble gas electron configuration of aluminum (Al)? A. [Ne] 3s2 3p1 B. [Ne] 2s2 2p1 C. [Ar] 3s2 3p1 D. [Ar] 1s2 2s2 2
Gekata [30.6K]

[Ne] 3s2 3p1  So its A

6 0
3 years ago
Read 2 more answers
37)
liberstina [14]

Answer:

The answer is D.

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Who described atoms as small spheres that could not be divided into anything smaller?
    9·1 answer
  • Sodium hydroxide is a substance that causes severe burns. It is used in many educational laboratory activities but, because of i
    6·1 answer
  • What is the formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide if all products and reactants
    14·2 answers
  • _______ is the current condition in the troposphere. (2 points)
    14·1 answer
  • Which molecule is least likely to be able to travel via the macula communicans pathway
    7·1 answer
  • Which element has chemical properties that are most similar to potassium?
    11·1 answer
  • At 40km up in the atmosphere the pressure is 3.8 kPa. I release a balloon with a volume of 30.0
    15·1 answer
  • Please help I will mark brainliest
    8·1 answer
  • Li2SO4 _____ an electrolyte in solution.<br> A. Is <br> B. Is not
    13·2 answers
  • a rock is found to have a small amount of copper would you call the rock an ore of copper explain in 5-6 sentences
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!