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Answer:</h2>
- Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s).
<u>Moles Cu present</u> = 100g Cu x 1 mol Cu/63.55g
= 1.574moles Cu
<u>Mass of Ag produced</u> = 1.574mol Cu x 2mol Ag / 1mol Cu x 107.9g Ag/mol Ag
= 340.g Ag
Answer : The specific heat of metal is 
.
Explanation :
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.
where,
= specific heat of metal = ?
= specific heat of water = 
= mass of metal = 129.00 g
= mass of water = 45.00 g
= final temperature = 
= initial temperature of metal = 
= initial temperature of water = 
Now put all the given values in the above formula, we get
Therefore, the specific heat of metal is .
Answer:
most liquids do expand when they freeze
Explanation:
water is actually one that expands and there are probably many more too
i hope this helps you
Answer:
Option C. 200mL
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
2NaOH + H2SO4 –> Na2SO4 + 2H2O
From the balanced equation above,
The mole ratio of the acid (nA) = 1
The mole ratio of the base (nB) = 2
The following data were obtained from the question:
Molarity of the base (Mb) = 1M
Volume of the base (Vb) =..?
Molarity of the acid (Ma) = 1M
Volume of the acid (Va) = 100mL
The volume of the base needed can be obtained as follow:
MaVa/MbVb = nA/nB
1 x 100 /1 xVb = 1/2
Cross multiply to express in linear form
Vb = 1 x 100 x 2
Vb = 200mL
Therefore, the volume of the base needed for the reaction is 200mL
