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lakkis [162]
3 years ago
6

Why does ice float?

Chemistry
2 answers:
Misha Larkins [42]3 years ago
4 0
D water expands when it freezes

Stolb23 [73]3 years ago
4 0
D.water expands when it freezes
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aleksandr82 [10.1K]

the second option is best described

Explanation:

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How does concentration affect reaction rate
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A higher concentration of a catalyst will speed up the reaction rate.

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How many grams of NaCl are needed to make 0.800 liter of a 5.00 M solution?
ziro4ka [17]

Answer:

             0.324 g is required to make 5.00 M solution of NaCl in 0.800 L.

Given data:

                 Molarity = 5.00 M

                 Formula Mass = 58.5 g/mol

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To Find;

               Mass in gram = ?

Solution:

              Formula for calculating mass in gram is given as,

              Mass in gram = Molarity × Formula mass × Volume required / 1000 putting values

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6 0
3 years ago
A chemist who studies water samples did a demonstration of how to test for lead in water. She added a clear solution of potassiu
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Answer:

The swirling yellow solid formed is lead iodide (PbI₂).

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2KI + Pb(NO₃)₂ → PbI₂↓ + 2KNO₃

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How do we observe in experiments?
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by watching and writing down the information that is provided

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