Low friction between you/the ski vs the snow.
if you think about it its kinda like you and a slip and slide...water helps decrease friction so you slide (snow does the same for the skiing) but without it you just flop and don't go anywhere (very easily anyway).
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Natural: Land mounds, Rivers
Human made: Country borders, cities
Answer:
MgSO₄(aq) + CaCl₂(aq) → CaSO₄(s) + MgCl₂(aq).
Explanation:
- It is a double replacement reaction.
- A double displacement reaction, also known as a double replacement reaction or metathesis, is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.
- The reaction between Magnesium Sulfate and Calcium Chloride is represented as:
<em>MgSO₄(aq) + CaCl₂(aq) → CaSO₄(s) + MgCl₂(aq).</em>
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<em>The products are calcium sulfate and magnesium chloride.</em>
