Cell wall might be the answer
Answer:
200.87 g
Explanation:
In order to calculate the mass of ice that could be melted by using 67,000 J of energy, we will use the following expression.
Q = ΔH°f × m
where,
- Q: heat required (67,000 J)
- ΔH°f: enthalpy of fusion of water (333.55 J/g)
67,000 J of energy can be used to melt 200.87 grams of ice.
Answer:
0.54g of Cr
Explanation:
Current (I) = 10A
Time (t) = 100s
Molecular mass of Cr = 51.996 amu
Faraday's first law of electrolysis states that
The mass of the substance (m) of a given substance deposited at an electrode is directly proportional to the quantity of electricity or charge (Q) passed
m = nQ
M = mass of the substance
n = electrochemical constant
Q = charge passed through it
Q = IT
Q = (10 * 100) = 1000C
1 moles = molarmass = Faraday's constant (96500C)
Molar mass = Faraday's constant (96500C)
51.996 g = 96500C
How many grams will be liberated with 1000C
51.996g = 96500C
Xg = 1000C
X = (1000 * 51.996) / 96500
X = 51996 / 96500
X = 0.5388g = 0.54 g of Cr will be deposited