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zvonat [6]
3 years ago
13

Need help with this question

Chemistry
1 answer:
olya-2409 [2.1K]3 years ago
8 0
Your answer would be A!
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Indicate whether the following represents a Chemical or Physical change: Milk sours
marusya05 [52]

Answer:

Chemical Change

Explanation:

Physical change normally mean that the change can revert back to its orginal state, which in this case that is not possible therfore it is a chemical change.

4 0
3 years ago
Any process that results in the formation of an ion
Nonamiya [84]

Answer:

Ionization is the process by which ions are formed by gain or loss of an electron from an atom or molecule.

7 0
2 years ago
This means that the steel bar lost 14900 J of thermal energy. What is the change in temperature of the steel bar? Recall that th
stiv31 [10]

Answer:

ΔT=-747,13°C

Explanation:

Sensible heat is<em> the amount of thermal energy that is required to change the temperature of an object</em>, the equation for calculating the heat change is  given by:

Q=msΔT

where:

  • Q, heat that has been absorbed or realeased by the substance [J]
  • m, mass of the substance [g]
  • s, specific heat capacity [J/g°C] (
  • ΔT, changes in the substance temperature [°C]

To solve the problem, we clear ΔT of the equation and then replace our data:

Q=msΔT

ΔT=Q/ms

ΔT=\frac{-14900 J}{40,7g*0,49\frac{J}{gC} }=-747,13°C

<em>(Note that Q=-14900 J because there is a </em><u><em>LOST</em></u><em> of thermal energy)</em>

Thus, the change in temperature of the steel bar is -747,13°C, meaning that the temperature of the bar decreases.

5 0
3 years ago
Read 2 more answers
Can someone answer this question? It's not that long
Kitty [74]

Answer:

sections 2 and 3

Explanation:

logic

6 0
2 years ago
If the Earth had no tilt, how would that affect our seasons? I will give branliest to first comment
Aleks [24]

Answer:

in my opinion it wouldn't be regular seasons like what we have now it would be equal in every poles .. there would not be ice in North. [its my opinion though] sorry if I am wrong

6 0
3 years ago
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