Answer:
composting scraps
recycling is the action or process of converting waste into reusable material.
If the substance mixes with water it's polar. If it doesn't it ms non polar.
Solubility is the ability of a substance to dissolve in another substance.
Answer:
<u>The temperature difference is</u> 
Explanation:
The formula that is to used is :
Δ
Δ
<em>where ,</em>
- <em>Δ
is the heat supplied in calories = 300cal</em> - <em>
is the mass of water taken = m (assumed)</em> - <em>Δ
is the change in temperature</em> - <em>
is the specific heat of water =
</em>
ΔT :

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