38.2 °C is the temperature on the beach.
<u>Explanation:</u>
As per the pressure law, as the pressure of the gas increases which is directly proportional to the absolute temperature measured in Kelvin(K).
So
Now we have,
Pressure P1 =4.50 atm and
P2 = 4.78 atm
Temperature T1 = 20° C + 273 K = 293 K
So we need to find T2 as,
To convert the temperature in degree Celsius, we have to subtract 273 from the Kelvin temperature.
311.2 K - 273 K = 38.2 °C
Thus 38.2 °C is the temperature on the beach.
In order to compute the y-component of a vector, we simply use the formula:
Fy = F*sin(∅)
Where ∅ is the angle of the vector measured from the positive x-axis and F is the magnitude of the vector.
Similarly, the x-component is calculated by substituting sin(∅) with cos(∅)
Answer:
sodium fluoride
Explanation:
When we add sodium fluoride to a solution of a given mixture, we get barium fluoride from Ba, which would be an insoluble salt, and silver fluoride from Ag, which would be a soluble salt.
The solubility rule will be used to determine the barium salt that forms as a precipitate and leaves Ag+ salt in the solution.
From the following equations, we will see that the precipitate is formed in Ba but Ag remains dissolved in the solution.
- Standard reduction potential of Ag/Ag⁺ is 0.80 v and that of Cu⁺²(aq)/Cu⁰ is +0.34 V.
- The couple with a greater value of standard reduction potential will oxidize the reduced form of the other couple.
Ag⁺ will be reduced to Ag(s) and Cu⁰ will be oxidized to Cu²⁺
Anode reaction: Cu⁰(s) → Cu²⁺ + 2 e⁻ E⁰ = +0.34 V
Cathode reaction: Ag⁺(aq) + e → Ag(s) E⁰ = +0.80 V
Cell reaction: Cu⁰(s) + 2 Ag⁺(aq) → Cu⁺²(aq) + 2 Ag⁰(s)
E⁰ cell = E⁰ cathode + E⁰ anode
= 0.80 + (-0.34) = + 0.46 V