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
A 1.67-g sample of solid silver reacted in excess chlorine gas to give a2.21-g sample of pure solid Agcl.The heat given off in t
kotegsom [21]

<u>Given:</u>

Mass of Ag = 1.67 g

Mass of Cl = 2.21 g

Heat evolved = 1.96 kJ

<u>To determine:</u>

The enthalpy of formation of AgCl(s)

<u>Explanation:</u>

The reaction is:

2Ag(s) + Cl2(g) → 2AgCl(s)

Calculate the moles of Ag and Cl from the given masses

Atomic mass of Ag = 108 g/mol

# moles of Ag = 1.67/108 = 0.0155 moles

Atomic mass of Cl = 35 g/mol

# moles of Cl = 2.21/35 = 0.0631 moles

Since moles of Ag << moles of Cl, silver is the limiting reagent.

Based on reaction stoichiometry: # moles of AgCl formed = 0.0155 moles

Enthalpy of formation of AgCl = 1.96 kJ/0.0155 moles = 126.5 kJ/mol

Ans: Formation enthalpy = 126.5 kJ/mol


6 0
3 years ago
Read 2 more answers
A box experiences a force of 2 N to the left and 3 N to the right. Which is true of the box's motion?
denis23 [38]
The box is expected to go to the right since the 3N is stronger than the 2N and the rightward force will over come the leftward force.
5 0
4 years ago
Read 2 more answers
1. Balance the following equations:<br> (photo attached, just 1 a,b,&amp;c)
koban [17]

Here are the answers

\\ \tt\hookrightarrow HCl+NaOH\longrightarrow NaCl+H_2O

  • Already balanced

\\ \tt\hookrightarrow H_2SO_4+2NaOH\longrightarrow Na_2SO_4+2H_2O

\\ \tt\hookrightarrow 2HCl+Ba (OH)_2\longrightarrow BaCl_2+2H_2O

7 0
2 years ago
If 1.2 moles of ideal gas occupy a volume of 18.2 L at a pressure of 1.8 ATM what is the temperature of gas in degrees Celsius.
Novosadov [1.4K]

Answer: A 59.5 degree celcius

The equation that we will use to solve this problem is :

PV = nRT where:

P is the pressure of gas = 1.8 atm

V is the volume of gas = 18.2 liters

n is the number of moles of gas = 1.2 moles

R is the gas constant =  0.0821

T is the temperature required (calculated in kelvin)

Using these values to substitute in the equation, we find that:

(1.8)(18.2) = (1.2)(0.0821)(T)

T = 332.5 degree kelvin

The last step is to convert the degree kelvin into degree celcius:

T = 332.5 - 273 = 59.5 degree celcius

8 0
4 years ago
Something that can be broken down by living organisms is
Aloiza [94]
The answer is A: biodegradable.
5 0
3 years ago
Other questions:
  • Which of the following types of molecular representations can be used to show differences between isomers? Explain why each can
    14·1 answer
  • Red wavelengths are ____ theb blue wavelengths​
    10·2 answers
  • How many grams of H are in 1.52 grams acetic acid
    6·1 answer
  • Urea (CH4N2O) is a common fertilizer that can be synthesized by the reaction of ammonia (NH3) with carbon dioxide as follows: 2N
    8·1 answer
  • COMPARE: Identify three ways that a biologist's research is similar to an astronomer's. Both scientists always perform experimen
    14·1 answer
  • Calculate the number of oxygen atoms in 29.34 g of sodium sulfate, na2so4 .
    8·2 answers
  • What is the difference between an imprint and an impression?
    13·1 answer
  • g A student determines the number of moles of water in a hydrated metal oxide by weighing a clean, dry crucible and lid while th
    6·1 answer
  • If the abundance of ​ 85​ Rb is 72.2% and the abundance of 87​ Rb is 27.8%, what is the average atomic mass of rubidium?
    7·1 answer
  • write a balanced chemical reaction when heated aluminium metal react with solid copper oxide produce copper metal and aluminium
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!