Answer: When water freezes it gets larger and becomes a solid but it still weighs the same as when it was a liquid form. When it becomes larger it takes up space but makes it less dense. Ok so getting to the point- oil unlike water becomes more dense when frozen so this is why oil sinks in water. Sorry if this was confusing but I hope it helped have a great day and god bless you :3
Answer:
they have a fixed pair of magnets and a rolling coil they convert motion into electric energy they are powered by fosile fuels they use reletive motion of a magnet and coil of a wire
Explanation:
Vacuoles are storage bubbles found in cells. They are found in both animal and plant cells but are much larger in plant cells. Vacuoles might store food or any variety of nutrients a cell might need to survive. They can even store waste products so the rest of the cell is protected from contamination.
Answer:-
0.633 moles
Explanation:-
The first step to solving this problem is to write the balanced chemical equation.
The balanced chemical equation for this reaction is
3 CaCO3 + 2 FePO4 = Ca3(PO4)2 + Fe2(CO3)3
From the balanced chemical equation, we can see
3 moles of CaCO3 react with 2 moles of FePO4.
In the question we are told there are 1.9 moles of CaCO3.
So 1.9 moles of CaCO3 react with (2 moles x 1.9 moles )/ 3 moles= 1.267 moles of FePO4.
The question tells us there are 2.7 moles of FePO4.
So there is excess FePO4.
Thus our limiting reagent is CaCO3. It will determine how much Ca3(PO4)2 is formed.
From the balanced chemical equation, we can see
3 moles of CaCO3 gives 1 mole of Ca3(PO4)2
1.9 moles of CaCO3 gives (1 moles x 1.9 moles ) / 3 moles= 0.633 moles of Ca3(PO4)2.
0.633 moles of Ca3 (PO4)2 can be formed when 1.9 moles of CaCO3 react with 2.7 moles of FePO4
Answer:
The freezing point will be -2.046°C.
Explanation:
The freezing point depression equation is 
Where;
= The temperature depression of the freezing point
= The constant of freezing point depression which is solvent dependent = 1.86°C/m
i = The number of particles the substance decomposes into in solution = 1 for sugar (a covalent compound)
m = The molality of the solution = 1.1
Therefore, we have;
Therefore the freezing point will be 0 - 2.046°C = -2.046°C.
