A 126.1-gram block of granite at 92.6°C is dropped into a tub of water at 24.7°C in an isolated system. The final temperature of
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Answer:
Al (s) + AgClO3 (aq) will result in a chemical reaction.
Al(s) + 3AgClO₃(aq) -----> Al(ClO₃)₃(aq) + 3Ag(s)
Cd(s) + CuNO3(aq) will also result in a chemical reaction.
Cd(s) + 2CuNO₃ -----> Cd(NO₃)₂ + 2Cu
Explanation:
For chemical reactions, metals lower on the activity series cannot normally displace ions of metals higher than them in the activity series.
Metals at the lower end of the activity series are not easily oxidized.
The activity series is attached to this solution. (Note: Cadmium is not on the attached chart, but Cadmium is between Iron (Fe) & Cobalt (Co) on the activity series)
- Pb is way lower Mg in the activity series, hence, it cannot become oxidized by displacing Mg2+ ion in solution.
- Al is way higher than Ag in the activity series. Hence it will easily be oxidized and displace displace Ag from it's solution easily.
- Cadmium will displace Copper in solution too because Cd is higher than Cu on the activity series.
- Platinum cannot displace Cobalt from solution as Pt is lower than Co on the activity series.
Answer:
$4375.64 is the cost for making one ton of the brass sample of mass 1 Tonn.
Explanation:
Mass of the brass = 1 ton = 907185 g
Mass of copper = x
Mass of zinc = y
x + y = 907185, ....[1]
Volume of the brass = V
Density of the brass = D =
Volume of copper = v
Volume of zinc = v'
Density of copper = d =
Density of zinc = d' =
v + v' = V
...[2]
On solving [1] and [2]:
x = 633,419 g
y = 273,766 g
1 g = 0.001 kg
x = 633,419 g = 633.419 kg
y = 273,766 g = 273.766 kg
The price of zinc = $1.80/kg
Price of 273.766 kg of zinc = $1.80/kg × 273.766 kg = $492.78
The price of copper = $6.13/kg
Price of 633.419 kg of zinc = $6.13/kg × 633.419 kg = $3882.86
Cost for making one ton of the brass sample :
$492.78 + $3882.86 = $4375.64
<u>Answer:</u> The increase in temperature is 7.14°C
<u>Explanation:</u>
To calculate the change in temperature, we use the equation:
where,
q = heat absorbed = 14.5 kJ = 14500 J (Conversion factor: 1 kJ = 1000 J)
m = mass of water = 485 g g
c = specific heat capacity of water = 4.184 J/g.°C
= change in temperature = ?
Putting values in above equation, we get:
Hence, the increase in temperature is 7.14°C