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
katrin [286]
3 years ago
7

A chemist analyze an unknown liquid .the chemist takes samples from the top ,middle and bottom of the samples .what observations

would allow the chemist to reach the conclusion that the liquid could be a pure substance ?
Chemistry
1 answer:
Annette [7]3 years ago
5 0

Explanation:

The observation that can make the chemist conclude that the liquid is a pure substance is if the unknown liquid composition is the same at every point of sampling.

  • Pure substances are distinct substances.
  • They have a definite composition.
  • All the parts are the same throughout.
  • They cannot easily be separated or broken down into simpler substances by physical means.
  • They have a unique set of physical properties.

Therefore, if his analysis meets any of the criteria for defining a pure substance above, he can conclude that it is one.

Pure substances are elements and compounds.

Learn more:

Pure substances brainly.com/question/1832352

#learnwithBrainly

You might be interested in
How does the concentration of a gas in solution change when the partial pressure of the gas above the solution increases?
irakobra [83]
Because the concentration of molecules in the gas phase increases with increasing pressure, the concentration of dissolved gas molecules in the solution at equilibrium is also higher at higher pressures
5 0
2 years ago
1. A dry, empty bottle is placed in an ice bath. After the air inside the bottle is cooled off, a balloon is placed
Alex777 [14]

Answer:

hot air rises and expanded the balloon

Explanation:

thats it.

8 0
2 years ago
Read 2 more answers
A 45-g aluminium spoon(specific heat 0.80 / J/gdegree Celsius) at 24 degree celsius is placed in 180 ml(180 grams) of coffee at
Vlad [161]

Explanation:

a) The amount of heat released by coffee will be absorbed by aluminium spoon.

Thus, heat_{absorbed}=heat_{released}

To calculate the amount of heat released or absorbed, we use the equation:  

Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})

Also,

m_1\times c_1\times (T_{final}-T_1)=-[m_2\times c_2\times (T_{final}-T_2)]    ..........(1)

where,

q = heat absorbed or released

m_1 = mass of aluminium = 45 g

m_2 = mass of coffee = 180 g

T_{final} = final temperature = ?

T_1 = temperature of aluminium = 24^oC

T_2 = temperature of coffee = 85^oC

c_1 = specific heat of aluminium = 0.80J/g^oC

c_2 = specific heat of coffee= 4.186 J/g^oC

Putting all the values in equation 1, we get:

45 g\times 0.80J/g^oC\times (T_{final}-24^oC)=-[180 g\times 4.186J/g^oC\times (T_{final}-83^oC)]

T_{final}=80.30^oC

80.30 °C is the final temperature.

b) Energy flows from higher temperature to lower temperature.Whenever two bodies with different energies and temperature come in contact. And the resulting temperature of both bodies will less then the body with high temperature and will be more then the body with lower temperature.

So, is our final temperature of both aluminium and coffee that is 80°C less than initial temperature of coffee and more than the initial temperature of the aluminum.

8 0
3 years ago
Sucrose, a major product of photosynthesis in green leaves, is synthesized by a battery of enzymes. The substrates for sucrose s
Gwar [14]

Answer:

Sucrose is a disaccharide composed of alpha D gluose and beta D fructose linked together by beta 2,alpha1 glycosidic linkage.

Explanation:

The specificity of glycosidic linkage very much essential to choose the substrate for the synthesis of specific disaccharide.

 For example sucrose contain beta 2,alpha1 glycosidic linkage that means the hydroxyl group of anomeric carbon of one monosaccharide(fructose) should remain in beta conformation and the hydroxyl group of other monosaccharide(glucose) should remain in alpha conformation.

   

5 0
3 years ago
9
marishachu [46]

Answer:

B. as a food preservative in the manufacture of detergents

.........

8 0
3 years ago
Other questions:
  • Is cinnamon ionic or covalent ?
    13·2 answers
  • A beaker contains 30 milliliters acetone that boils at 56 °C. What is the boiling point of half of this acetone? Half of 56 °C s
    9·2 answers
  • What kind of melocule is water?A:nonpolarB:ionicC:polarD:charged
    14·1 answer
  • How does an increase in temperature at which a reaction takes place cause an increase in reaction rate
    12·1 answer
  • A chemical or physical change that takes in heat from its surroundings is an exothermic process an explosion an endothermic proc
    14·2 answers
  • What mass of glucose (C6H1206) can form from
    8·1 answer
  • What does it mean to be an exothermic chemical reaction? a) Energy is released when no new substances are made. b) Energy is rel
    12·1 answer
  • Which of these substances contributes to soap's slippery texture?
    12·1 answer
  • Why must oxidation be accompanied by a reduction?
    14·2 answers
  • Plz, Help! Read the instructions and answer the question! First one to answer will get brainliest!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!