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
alisha [4.7K]
3 years ago
9

What is the meaning of a polymer?​

Chemistry
2 answers:
ira [324]3 years ago
8 0
A substance that has a molecular structure consisting entirely of a large number of similar units bonded together
solong [7]3 years ago
8 0

Answer:

A polymer is any class of natural or synthetic substances composed of very large molecules called macromolecules that are multiples of chemical units called monomers.

You might be interested in
Does Mg or Ne have a higher electronegativity value
elena55 [62]

Answer:

Ne

Explanation:

3 0
3 years ago
Read 2 more answers
Determine the energy change in the following reaction. This reaction is considered ...
Juliette [100K]

Answer:isothermic

Explanation:

8 0
2 years ago
Read 2 more answers
During a combustion reaction, 9.00 grams of oxygen reacted with 3.00 grams of CH4.
Monica [59]

Answer:

0.74 grams of methane

Explanation:

The balanced equation of the combustion reaction of methane with oxygen is:

  • CH₄ + 2 O₂ → CO₂ + 2 H₂O

it is clear that 1 mol of CH₄ reacts with 2 mol of O₂.

firstly, we need to calculate the number of moles of both

for CH₄:

number of moles = mass / molar mass = (3.00 g) /  (16.00 g/mol) = 0.1875 mol.

for O₂:

number of moles = mass / molar mass = (9.00 g) /  (32.00 g/mol) = 0.2812 mol.

  • it is clear that O₂ is the limiting reactant and methane will leftover.

using cross multiplication

1 mol of  CH₄ needs → 2 mol of O₂

???  mol of  CH₄  needs → 0.2812 mol of O₂

∴ the number of mol of CH₄ needed = (0.2812 * 1) / 2 = 0.1406 mol

so 0.14 mol will react and the remaining CH₄

mol of CH₄ left over = 0.1875 -0.1406 = 0.0469 mol

now we convert moles into grams

mass of CH₄ left over = no. of mol of CH₄ left over *  molar mass

                                    = 0.0469 mol * 16 g/mol = 0.7504 g

So, the right choice is 0.74 grams of methane

3 0
3 years ago
In which way does a na1+ ion differ from a neutral na atom?
DochEvi [55]
Na 1+ misses 1 electron
8 0
3 years ago
How many times more basic is a solution with a pH of 10 than a solution with a pH of 8 
lina2011 [118]
You may want to ask the questions seperatly more likely for someone to answer
4 0
3 years ago
Other questions:
  • How does earth maintain its energy balance
    11·1 answer
  • What is physical chemistry?
    5·1 answer
  • A container with a fixed volume, filled with hydrogen gas at -104c and 71.8 kPa is heated until the pressure reaches 225.9 kPa.
    7·1 answer
  • Would it ever be possible for the temperature in Celsius to have a greater value than the temperature in Fahrenheit?
    7·1 answer
  • What do people mean when they say everything is connected
    7·1 answer
  • 4) A 4.00 L balloon is filled with 0.297 moles of helium gas with a pressure
    6·1 answer
  • - A 300g sample of CaCO3 was heated until 10 L of CO2 was collected
    7·1 answer
  • HURRY PLS IT'S TIMED
    14·2 answers
  • How did Ptolemy's model of the solar system explain the apparent changes in speed and direction of the planets?
    13·1 answer
  • The primary role of the nervous system is to:
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!