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
Please answer both questions.
Deffense [45]

Answer:

1)Krypton

2)11H

Explanation:

electrons=protons

protons=atomic number

mass number=protons+neutrons

mass number is the superscript

atomic number is the subscript.

1)The answer is Krypton because its atomic number= number of protons=number of electrons is 36.

mass number is 46+36=82.

2)subscript=atomic number=number of protons=number of electrons

i. H = electrons=1

=neutrons=0

ii. Cl=electrons=17

=neutrons=35-17=18

iii. Na=electrons=11

=neutrons=23-11= 12

so the answer is Hydrogen because it has 1 electron and 0 neutron.

I hope this helps.

6 0
3 years ago
Each liter of air has a mass of 1.80 grams. How many liters of air are contained in
natita [175]

Question:

Each liter of air has a mass of 1.80 grams. How many liters of air are contained in 2.5 x103) kg of air?

Answer:

11.48106 L

5 0
3 years ago
How fast did the universe expand?​
Sidana [21]

Answer:

Actually there is no answer but there is so much theories but people mostly says Bug Bang

7 0
3 years ago
Read 2 more answers
If you mix 4.5 g of hcl in enough water to make 0.9 l (900 ml of solution, what is the molarity of the solution?
Elina [12.6K]
We first need to convert grams of hydrogen chloride to moles.

molarity = moles of solute/liters of solution

To convert from grams to moles, we need to divide by it's molecular mass.

4.5 g HCl * (1 mole HCl/ 36.46 g HCl) = 0.123 moles HCl

0.12 moles/0.9 L = 0.13 M HCl

If they gave you the volume as 900 mL, then that would be 3 sig figs. And the sig figs would be limited to 2 because the mass.If, however, they gave you the volume as 0.9 L, then that would be 1 sig fig. And the final answer would be limited to to 1 sig fig.
4 0
3 years ago
How many mL of 0.100 M NaOH are needed to neutralize 50.00 mL of a 0.150 M solution of CH3CO2H, a monoprotic acid? How many mL o
Rama09 [41]

Answer:

We need 75 mL of 0.1 M NaOH ( Option C)

Explanation:

<u>Step 1: </u>Data given

Molarity of NaOH solution = 0.100 M

volume of 0.150 M CH3COOH = 50.00 mL = 0.05 L

<u>Step 2:</u> The balanced equation

CH3COOH + NaOH → CH3COONa + H2O

<u>Step 3:</u> Calculate moles of CH3COOH

Moles CH3COOH = Molarity * volume

Moles CH3COOH = 0.150 M * 0.05 L

Moles CH3COOH =  0.0075 moles

<u>Step 4</u>: Calculate moles of NaOH

For 1 mol of CH3COOH we need 1 mol of NaOH

For 0.0075 mol CH3COOH we need 0.0075 mole of NaOH

<u>Step 5:</u> Calculate volume of NaOH

volume = moles / molarity

volume = 0.0075 moles / 0.100 M

Volume = 0.075 L = 75 mL

We need 75 mL of 0.1 M NaOH

7 0
3 years ago
Other questions:
  • What’s the formula equation for
    14·2 answers
  • Which of the following would be used to measure the amount of matter in an object?
    10·1 answer
  • Which of the following is the flow of electrons through a wire or a conductor
    10·2 answers
  • 6. The concentration of a solution is : a)The amount of solvent needed to fully dissolve a solute b)The measurement of how large
    15·1 answer
  • Which one is the answer... a, b, or c?
    15·1 answer
  • The ksp of lead iodide is 7.1 × 10-9. a chemical engineer adds 0.0025 mol of ki to a solution of 0.00004 mol pb(no3)2 in 500 ml
    12·1 answer
  • What other substance containing sodium would be needed to make the buffer?
    6·2 answers
  • Which reaction has the highest atom economy for the production of C02?​
    11·1 answer
  • A student has a test tube that contains 50 mL of water. She wants to add a substance to the water that will cause the test tube
    9·1 answer
  • A cubic meter is equal to the volume of _____.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!