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
Vladimir79 [104]
2 years ago
8

Which substance can not be decomposed by a chemical change? (1) AlCl3 (3) HI (2) H2O (4) Cu

Chemistry
2 answers:
user100 [1]2 years ago
5 0
Cooper is the substance that can't be decomposed by a chemical chAnge. So 4)
adoni [48]2 years ago
3 0
<span>The answer I choose is option (4) Copper</span>
You might be interested in
Why is unit of pressure called a derived unit ?? 2) how do you measure the volume of milk?<br>​
trasher [3.6K]

1. Unit of pressure called a derived unit because it is a combination of base units (kg·m^-1·s^·2).

2. We measure the volume of milk by a instrument called Milk Lactometer.

4 0
2 years ago
Explain how mary would conduct a science experiment to test wheather plants need soil to grow.
Elis [28]
Try to grow a plant with and without soil
6 0
2 years ago
Read 2 more answers
Caffeine is one of many naturally occurring chemicals in tea plants that plays two important roles: protecting the plant from pr
AnnyKZ [126]

Caffeine is more soluble in dichloromethane and the both are separated by evaporating the solvent.

Caffeine is an organic plant material which is more soluble in non-polar solvents than in polar solvents. As such, caffeine is more soluble in dichloromethane than in pure water.

In order to carry out a liquid-liquid exaction of dichloromethane from a commercial teabag, the dichloromethane is mixed with water. The caffeine is found to be more soluble in the organic dichloromethane layer than in water.

The two solvents can now be separated using a separating funnel and the solution is evaporated to obtain the caffeine.

Learn more: brainly.com/question/967776

6 0
2 years ago
Can some tell me plz
valentina_108 [34]

Answer: stay the same because it's a solid.

Explanation:

5 0
3 years ago
Read 2 more answers
When chemists convert ethene (C2H2) to ethanol (CH3CH2OH), they have a mixture of the two gaseous substances. Why do chemists th
emmainna [20.7K]

Answer:

to collect liquid ethanol and leave ethene as a gas because ethanol has hydrogen bonds    

Explanation:

The chemist would be lesser than the temperature of the mixture as to collect the liquid ethanol and then leave ethene as a gas since the ethanol is a bond that should be hydrogen. Also -OH that available in the ethanol would be responsible for the hydrogen bonds also it is the main and significant molecular forice

So as per the given situation the above represent the answer

3 0
2 years ago
Other questions:
  • How many moles of Al2O3 will be formed when 27 grams of Al reacts completely with O2?
    8·1 answer
  • If a weak acid is 25% deprotonated at ph 4, what is the pka?if a weak acid is 25% deprotonated at ph 4, what is the pka?
    11·2 answers
  • 7. Which statement about scientific consensus is true?
    13·1 answer
  • What characteristic of an epic hero does this passage
    15·1 answer
  • In a certain experiment 10.0g of magnesium nitride is allowed to react with 5.00 g of water. Calculate the final mass of ammonia
    8·1 answer
  • Which of the following allosterically activates mammalian isocitrate dehydrogenase?a. ADPb. NADHc. ATPd. MalateCitrate
    7·1 answer
  • 13. Why do you think the observed trend for atomic radii exists across a period? Down a<br>​
    8·1 answer
  • 6. Below is a table comparing atoms of different elements. Write your
    5·1 answer
  • Octasilicon nonanitride --- Covalent compound<br><br> What is the chemical formula?
    14·1 answer
  • 7. H3PO4 →<br> H4P207+<br> H20<br> Balance the equation
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!