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Nutka1998 [239]
3 years ago
11

Some properties of liquid water are very different from those of solid water (ice). Explain why freezing is considered a physica

l change, even though the properties of water change when it freezes.
Chemistry
1 answer:
drek231 [11]3 years ago
8 0

Answer:

A chemical change is a change in the chemical makeup of a substance and results in a new substance. Ice and water both have the same chemical makeup - ice is just a different state and has the same atoms but in an expanded form.

Explanation:

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<u>-TheUnknownScientist</u><u> 72</u>

4 0
2 years ago
How many moles of BaSO4 are formed if 0.5 moles of Na2 SO4 react with 60 g of BaCl2? Na2 SO4 + BaCl2 → BaSO4 + 2NaCl
faust18 [17]
<span>the balanced equation for the reaction is as follows
Na</span>₂<span>SO</span>₄<span> + BaCl</span>₂<span> ----> 2NaCl + BaSO</span>₄ 
<span>stoichiometry of Na</span>₂<span>SO</span>₄<span> to BaCl</span>₂<span> is 1:1
first we need to find out which the limiting reactant is
limiting reactant is fully used up in the reaction.
                                                                           
number of Na2So4 moles - 0.5 mol number of BaCl2 moles - 60 g / 208 g/mol = 0.288 mol
since molar ratio is 1:1 equal number of moles of both reactants should react with each other
                                                                         
therefore BaCl2 is the limiting reactant and Na2SO4 is in excess. amount of product formed depends on number of limiting reactant present.
stoichiometry of BaCl</span>₂<span> to BaSO</span>₄<span> is 1:1.
                                                                           
therefore number of BaSO4 moles formed - 0.288 mol</span>
6 0
3 years ago
Read 2 more answers
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I have attached the answer. hopefully, i read the problems correctly. let me know if I did not.

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Aleksandr-060686 [28]

Answer:

it will float back up because it's not dense enough to go down

7 0
3 years ago
2. I need to find the angle of corner of a room, what tool could I use?
Pavlova-9 [17]
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