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
sergij07 [2.7K]
3 years ago
15

What characteristics identify a substance?

Chemistry
1 answer:
Nataliya [291]3 years ago
4 0

Answer:

All substances can be characterized by their unique sets of physical and chemical properties.

You might be interested in
What kind of air mass will bring cold, dry weather as it moves toward an area
sergij07 [2.7K]

Answer:

i think the answer is Continental polar air masses

Explanation:

4 0
2 years ago
Which chemical change ? A.boiling B.freezing C.burning D.melting
fredd [130]

ANSWER:

the answer is burning as it is a chemical change emaning that the substance changes chemically, the other choices are exp of physical changing meaning they stay the same substance but change physically

~batmans wife dun dun dun...aka ~serenitybella

5 0
3 years ago
Read 2 more answers
The molar heat of vaporization of water is 40.7kJ/mol. How much heat must be absorbed to convert 50.0 grams of liquid water at 1
EleoNora [17]
During a phase change the temperature does not change since all of the heat is being absorbed in order to break the intermolecular forces.  Due to that, the formula will not need to have T in it and is actually q=nΔH(v).
n=the number of moles (in this case 2.778mol of water since you divide 50g by 18g/mol).
ΔH(v)=the molar heat of vaporization (in this case 40.7kJ/mol).
q=the heat that must be absorbed
q=2.778mol×40.7kJ/mol
q=113.1kJ
Therefore the water needs to absorb 1.13×10²kJ.

I hope this helps.  Let me know if anything is unclear.

4 0
3 years ago
A student used standard solutions of aspirin in a FeCl3-KCl-HCl mixture to plot a graph of molarity versus absorbance for dilute
kvasek [131]

Answer:

is any thing which has mass volume and empty space

8 0
2 years ago
SI units are based on multiples of what number?
Alinara [238K]
SI unites are based on multiplying or dividing by 10, 100, 1,000, 10,000 (and so on...) depending on the unit you're solving for.
3 0
3 years ago
Other questions:
  • 4. A. What is the percent by mass of water present in CoCl2.6H20?<br> B. Name the hydrate.
    10·1 answer
  • What is the effect of tap water, sea water, and rainwater on the rusting rate of iron?
    9·1 answer
  • Which one is not a sedimentery rock a.)sandstone b.)limestone c.)quartz d.(coal​
    10·2 answers
  • What is the mass of 4.00 moles of helium
    7·2 answers
  • The atomic number of nitrogen is 7. The mass is 14.01. This means that a) All nitrogen atoms have exactly 7 neutrons b) A small
    15·2 answers
  • 2. How many moles are in 2.43 x 1024 particles of Carbon Monoxide<br><br> (CO)?
    10·1 answer
  • If the elements W, X, Y, and Z have electronegativity values of 1.0, 2.0, 2.5, and 3.5, respectively, which bond is the least po
    5·1 answer
  • What is the noble gas electron configuration of bismuth (Bİ)?
    12·2 answers
  • These steps are followed when using the half-life of carbon-14 to determine
    15·2 answers
  • I need a chemistry questions about separating method
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!