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
Kruka [31]
3 years ago
11

Please help me with this Science Worksheet

Chemistry
1 answer:
s2008m [1.1K]3 years ago
4 0
I’m not 100% sure on the physical one but this is what I think

Physical
1- sunlight
2- sparks
3- burns
4- wood
5- light

Chemical
6- heat
7- ice
8- water
9- evaporates
10- vaper

Hope this helps :)
You might be interested in
Urea, CO(NH2)2, is manufactured on a large scale for use in producing urea-formaldehyde plastics and as a fertilizer. What is th
Pachacha [2.7K]

Answer:

5.004kg

Explanation:

Combustion of carbon

C+O2=CO2

from the relationship of molar ratio

mass of carbon/molar mass of carbon=volume of CO2 produced\molar vol(22.4 dm3)

mass of carbon =1000kg

atomic mass of carbon =12

volume of CO2 produced=1000×22.4/12

volume of CO2 produced =1866.6dm3

from the combustion reaction equation provided

CO2 (g) + 2NH3 (g) ⟶ CO (NH2 )2 (s) + H2 O(l)

applying the same relationship of molar ratio

no of mole of CO2=no of mole of urea

therefore

vol of CO2\22.4=mass of urea/molar mass of urea

molar mass of urea=60.06g/mol

from the first calculation

vol of CO2=1866.6dm3

mass of urea=1866.6×60.06/22.4

mass of urea=5004.82kg

7 0
3 years ago
Read 2 more answers
Stirring a liquid while you are mixing in another ingredient speeds up the rate of dissolving. Question 13 options: True False
brilliants [131]

Answer:

true

Explanation:

This is because it helps distribute the particles that are being dissolved. 

8 0
3 years ago
Read 2 more answers
How much thermal energy does a cup of coffee have
Fantom [35]

Answer:

a lot that's why it's really hot

6 0
3 years ago
Read 2 more answers
Which of the following statements is not true regarding acids? (3 points)
horsena [70]

Answer:

Lewis acid is a substance that donates a lone-pair of electrons.

Explanation:

What is said in the statement corresponds to a Lewis base, not an acid. For example, NH3 is a Lewis base, since it is capable of donating its pair of electrons. Trimethylborane (Me3B) is a Lewis acid, since it is capable of accepting a solitary pair.

8 0
4 years ago
Read 2 more answers
How is matter described?​
Tju [1.3M]

Answer:Matter is defined as anything that has mass and takes up space (it has volume). ... Volume is the amount of space something occupies. Words such as big, little, long, or short are used to describe volumes.

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • URGENT
    7·2 answers
  • Please help!!!!! Why is a spectrum for a given element unique for that element? A. No element has more than two electrons in the
    6·2 answers
  • What happens if a species is unable to adapt to a changing environment.
    11·1 answer
  • Question # 4 & 5. help CHEMISTRY
    6·1 answer
  • A taxi hurries with a costant speed of 84km/h. How far it travel in 5 hour
    11·1 answer
  • An atom with an equal number of electrons and protons has no _________.
    10·1 answer
  • Consider an acidic chromate-dichromate system at equilibrium in which the color is an orange-yellow. The reaction is represented
    8·1 answer
  • Which best defines a service? a task that is performed in exchange for payment an object that is acquired a plan that is execute
    13·2 answers
  • PLEASE HELP!!!
    11·1 answer
  • Calculate the density of the four solutions. All of the solutions has the volume equal to 25 ml. Red solution has 25.0 g of mass
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!