Answer:
It will feel hot.
Explanation:
The part of the metal that has been sitting in the sun will heat up, and because metal is a good conductor,<em> the part sitting in the sun will heat up the part sitting in the dark</em>.
We say metal is a good conductor because it has<em> high thermal conductivity</em>, which mean heat will flow from the hot section of the bar to the cold section of the bat.
Answer:
Soil is heterogeneous mixture of sand particles of different sizes, shape and of different compositions.
Explanation:
Homogeneous mixtures are defined as the mixtures in which components are evenly spread throughout the solution. The size and shape of the particles are similar in these mixtures.
For example : alloys, salt solution.
Heterogeneous mixtures are defined as the mixtures in which component are unevenly spread throughout the solution. The size and shape of the particles differ in these mixtures.
For example : sand in a water, soil etc.
Brass is an alloy homogeneous mixture of metals.
Air is a homogeneous mixture of gases.
Coffee with sugar stirred in is also homogeneous mixture.
Soil is a heterogeneous mixture of sand particles of different sizes, shape and of different compositions.
Answer:
45 minutes about
Explanation:
i think because i have 7 periods with 45 minutes each
The enthalpy of the solution is <u>positive </u>and the entropy is <u>positive</u>.
Potassium trioxonitrate (V) KNO₃(s) is a strong oxidizing solid substance that when dissolved in water changes to aqueous solution.
In its aqueous solution state, the randomness of molecules increases as a result of that the entropy will also increase leading to the positive state of the entropy.
Similarly, provided that the solution becomes quite cold to the touch, the enthalpy is also in it positive state.
Therefore, we can conclude that the enthalpy of the solution is <u>positive </u>and the entropy is <u>positive</u>.
Learn more about Potassium trioxonitrate (V) KNO₃(s) here:
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