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lianna [129]
3 years ago
12

Sugar dissolving in tea is it chemical or physical change?​

Chemistry
1 answer:
coldgirl [10]3 years ago
5 0

Answer:

it is a physical change because when you heat up again a solution of sugar and tea you gonna obtain again sugar

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a chemist produces 460 mL of oxygen gas at -43 C and constant pressure. to what celsius temperature must the oxygen be warmed in
Fudgin [204]

Answer:

27 °C

Explanation:

Applying,

V/T = V'/T'................. Equation 2

Where V = Initial volume of oxygen, T = Initial temperature, V' = Final volume of oxygen, T' = Final temperature.

Make T' the subject of the equation

T' = V'T/V................ Equation 2

Form the question,

Given: V' = 600 mL, V = 460 mL, T = -43°C = (-43+273) = 230K

Substitute these values into equation 2

T' = (600×230)/460

T' = 300 K

T' = (300-273) °C

T' = 27 °C

3 0
3 years ago
Who was Charles Darwin and what theory is he best known for?
Alona [7]

Answer:

Charles Darwin, in full Charles Robert Darwin, (born February 12, 1809, Shrewsbury, Shropshire, England—died April 19, 1882, Downe, Kent), English naturalist whose scientific theory of evolution by natural selection became the foundation of modern evolutionary studies.

Charles Darwin's theory of evolution states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. ... As a consequence those individuals most suited to their environment survive and, given enough time, the species will gradually evolve.

Explanation:

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8 0
3 years ago
What form of energy causes an ice cube to melt
zalisa [80]

Answer:

Thermal

Explanation:

When something heats up its atoms become further apart making it melt when something heats up or gets heat or loses heat that's thermal energy

6 0
3 years ago
In your OWN WORDS, describe what the “Law of Conservation of Energy” is.
agasfer [191]
Energy cannot be destroyed or created, but energy could be transformed or transferred. For example a skiier skiing from the mouth can have potential energy transferred into kinetic energy.
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How do the functions of the two groups of peripheral nerves differ?
gizmo_the_mogwai [7]

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One moves the arm one moves the legs???

Explanation:

8 0
3 years ago
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