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Slav-nsk [51]
3 years ago
7

why does ice float on water? the temperature of ice is lower than the temperature of water. the temperature of water and ice are

the same. the density of ice is less than the density of water. the density of ice is greater than the density of water.
Chemistry
2 answers:
dalvyx [7]3 years ago
5 0

Answer:

its density is less than water

Explanation:

Andrew [12]3 years ago
4 0
The density of ice is less than the density of water.

Fun fact: Water is the only known liquid that has this change it density.
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8. What volume (ml) of a 5.45 M lead nitrate solution must be diluted to 820.7 ml to make a
Ganezh [65]

212 ml of lead nitrate is required to prepare a dilute solution of 820.7 ml of lead nitrate.

Answer:

Option A.

Explanation:

Similar to Avagadro's law, there is another law termed as dilution law. As the product of volume and normality of the reactant is equal to the product of volume and normality of the product from the Avagadro's law. In dilution law, it will be as product of volume and concentration of the solute of the reactant is equal to the product of volume and concentration of solution.

C_{1} V_{1} =C_{2} V_{2}

So, as per the given question C1 = 5.45 M of lead nitrate and V1 has to be found. While C2 is 1.41 M of lead nitrate and V2 is 820.7 ml.

Then, (5.45*V_{1} ) = (820.7*1.41)

V_{1}=\frac{820.7*1.41}{5.45}=  212.33 ml

So nearly 212 ml of lead nitrate is required to prepare a dilute solution of 820.7 ml of lead nitrate.

3 0
2 years ago
harry potter flips a coin (not magical ) 8 times. He gets heads 1 time. What are the odds that his next flip will be heads? A 10
rodikova [14]
C. 50%
Unless the question is saying he only gets heads once, in which case it would be 0%. Or the coin could have 2 heads. Then it would be 100%.
But I'm pretty sure it's 50%.
7 0
2 years ago
LINKING IN<br> TECHNICAL OBJECTS<br> 1 a) What is linking?
d1i1m1o1n [39]

Answer:

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Different types of links have different characteristics

4 0
2 years ago
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A wind turbine generating electricity involves
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Answer:

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B. thermal energy.

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3 years ago
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