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algol13
2 years ago
14

What is the connection between physical properties and physical changes

Chemistry
2 answers:
irakobra [83]2 years ago
5 0

Answer: Physical changes are related to physical properties since some measurements require that changes be made. Melting Point: As solid matter is heated it eventually melts or changes into a liquid state at the melting point. Ice (a solid form of water) melts at 0 oC and changes to the liquid state.

Explanation:

Allisa [31]2 years ago
3 0

Answer:

Info from G00gle:Physical changes are related to physical properties since some measurements require that changes be made. Melting Point: As solid matter is heated it eventually melts or changes into a liquid state at the melting point. Ice (a solid form of water) melts at 0 oC and changes to the liquid state.

Explanation:

Mark me brainliest

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Calculate the energy provided by a slice of bread containing 2 g of protein, 1 g of fat, and 20 g of carbohydrate. record your a
vichka [17]
 the energy gained by proteins and carbohydrates differs from the energy gained by fats.
proteins and carbohydrates both give 4 kcal per gram 
fats give 9 kcal per gram
mass of proteins - 2 g
energy given by proteins - 2 g x 4 kcal/g = 8 cal
mass of carbohydrates - 20 g 
energy given by carbohydrates - 20 g x 4 kcal/g = 80 cal
mass of fat - 1 g 
energy given by fat - 1 g x 9 kcal/g = 9 cal
total energy = 8 + 80 + 9 = 97 kcal
energy = 97 kcal
8 0
3 years ago
A current of 5. 68 a is passed through a Fe(NO3)2 solution. How long, in hours, would this current have to be applied to plate o
daser333 [38]

There are  1.2 hr would this current have to be applied to plate out 7. 20 g of iron .

Calculation ,

Given ; Current ( I ) = 5. 68 A

In Fe(NO_{3} )_{2} , the valancy of Fe is +2 .

2 moles of e^{-} are required for the decomposition of 1 mole of Fe .

7. 20 g  of Fe in moles  = 7. 20 g /55.845 g/mol =0.12 mole

x moles of  e^{-} are required for the decomposition of 0.128 mole of Fe .

moles of   e^{-} are required = 0.256 moles

Charge on 1 mole  of   e^{-} = 96500 C

Charge on 0.256  mole  of   e^{-} = 24704 C

Current ( I )= Q/t  

t =Q / I = 24704 C/5. 68 A = 4349 sec = 1.2 hr

Therefore , there are  1.2 hr would this current have to be applied to plate out 7. 20 g of iron .

To learn more about iron

brainly.com/question/18500540

#SPJ4

8 0
1 year ago
Which is the formula for dinitrogen pentoxide?
nadya68 [22]

Answer:

N2O5

Explanation:

IUPAC ID: Dinitrogen pentoxide

Molar mass: 108.01 g/mol

Density: 1.64 g/cm³

5 0
3 years ago
Why do acids and bases have a good conduction of electricity?
omeli [17]
All acids only conduct electric current when they are dissolved in water, because when they are in an aqueous medium, they undergo ionization, i.e. release <span>ions.</span><span>

HCl --> H</span>⁺ + Cl⁻

The bases also conduct electric current in solution, because the Ionic dissociation sufferers (release the existing ions in the formula) and molecular ionization, suffer the reacting with water and releasing ions.

NaOH ---> Na⁺  + OH⁻

hope this helps!

7 0
3 years ago
As defined by Aristotle, which one of the following is an element?
zloy xaker [14]

Answer:

4

Explanation:

none of them

they are compounds and mixtures

8 0
3 years ago
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