Answer:
Explanation: A yellow precipitate o lead iodide is formed. see equation of reaction below: →
Th PbI2 is the insoluble yellow precipitate
Melt chocolate and measure the temperature and then melt wax and measure the temperature and compare his results.
Answer:
166 torr
Explanation:
Let’s call ethane Component 1 and propane Component 2.
According to Raoult’s Law,
where
p₁ and p₂ are the vapour pressures of the components above the solution
χ₁ and χ₂ are the mole fractions of the components
p₁° and p₂° are the vapour pressures of the pure components.
Data:
p₁° = 304 torr
p₂° = 27 torr
n₁ = n₂
1. Calculate the mole fraction of each component
χ₁ = n₁/(n₁ + n₂)
χ₁ = n₁/n₁ + n₁)
χ₁ = n₁/(2n₁)
χ₁ = ½
χ₁ = 0.0.5
χ₂ = 1- χ₁ = 1- 0.5 = 0.5
2. Calculate the vapour pressure of the mixture
B = 0.075 N/amp*m
V = 4.20 m/s
EMF = 0.88 Volts
L = ?
Formula = EMF = L x B x V
Since we have EMF and we’re looking for L, the formula will
now be:
L = EMF x B x V
Solution:
= 0.88 x 0.075 x 4.2
= 2.8
The length of the wire in the magnetic field is 2.8m
The answer is letter B.
The volume of the balloon is 77.0 L<span>.</span><span />