<u>Answer:</u> The number of moles of nitrogen gas is 0.505 moles.
<u>Explanation:</u>
To calculate the number of moles of nitrogen gas, we use ideal gas equation, which is:
where,
P = pressure of the gas = 4.27 atm
V = Volume of the gas = 2.96 L
T = Temperature of the gas =
R = Gas constant =
n = number of moles of gas = ?
Putting values in above equation, we get:
Hence, the number of moles of nitrogen gas is 0.505 moles.
Answer:
The final volume of the copper (ii) sulfate solution = 93.6 mL
<em>Note: The question is incomplete. The complete question is given below:</em>
<em>A chemist must dilute 37.0 mL of 602. mM aqueous copper(II) sulfate (Cuso4) solution until the concentration falls to 238. mM. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in milliliters. Be sure your answer has the correct number of significant digits.</em>
Explanation:
Using the equation of dilution, C₁V₁ = C₂V₂
where C₁ = initial concentration
V₁ = initial volume
C₂ = final concentration
V₂ = final volume
For the aqueous solution of copper (ii) sulfate
C₁ = 602 mM; V₁ = 37.0 mL; C₂ = 238 mM; V₂ = ?
Making V₂ subject of formula
V₂ = C₁V₁/C₂
V₂ = (602 mM * 37.0 mL)/238 mM
V₂ = 93.6 mL
Therefore, the final volume of the copper (ii) sulfate solution = 93.6 mL
A typical phase diagram has pressure on the y-axis and temperature on the x-axis. As we cross the lines or curves on the phase diagram, a phase change occurs. In addition, two states of the substance coexist in equilibrium on the lines or curves.Jun 6, 2016
Answer:
1. Multimeter
2. Cathode
3. Capacitor
4. Selector switch
5. Short or Shorted
6. Resistors
7. Resistor color coding
8. Open Capacitor
9. Step-up transformer
10. Step-down transformer
Explanation:
The above-described elements are electronic components. Resistors for instance are designed to resist the flow of electric current. They are also standardized such that a deviation from the set resistance level will indicate a problem. The capacitor is another electrical component that stores energy as an electrical charge. Knowledge of these electrical components and the ways they are tested will make a person proficient in electrical electronics.