Answer: The quantity of heat required is 358.644 J.
Explanation:
Given: Specific heat capacity =
Mass = 1.50 g
Formula used to calculate heat energy is as follows.
where,
q = heat energy
m = mass
C = specific heat capacity
= initial temperature
= final temperature
Substitute the values into above formula as follows.
Thus, we can conclude that quantity of heat required is 358.644 J.
Answer:
Explanation:
The equation of above line , y = 0.0005x+ 0.458
This can be compared with y = mx+c
Hence slope, m = 0.0005 and Y-intercept, c = 0.458
Or it can be plotted manually where straight line has to be drawn touching maximum number of data points. After drawing a straight linear line, we need to take any two points from the straight line and slope is calculated
Slope,
and y -intercept is calculated using extraplotting backwards such that it touches the Y-axis. the point where straight line touches Y-axis is Y-intercept (c).
Plot the average cell potentials E (y-axis) vs T (x-axis). image attached
Answer:
D. As water flows through the channels toward the turbines, it has kinetic energy. This is changed to mechanical energy as the water turns the turbines. Then the mechanical energy of the turbines is changed to electrical energy by the generator.
Explanation:
I hope this helps. :)
Answer:
D. 6.3 x 10-5 mol/L NaOH
Explanation:
Alizarin yellow is an indicator that is yellow when pH < 10.1. In the same way, thymol blue is blue when pH > 9
That means the pH of the solution is between 9 - 10.1
Any acid as HCl could have a pH of these.
The solution of 3.2x10⁻⁴M NaOH has a pH of:
pOH = -log[OH-] = 3.49
pH = 14-pOH = 10.51. The pH of the solution is not 10.5
Now, the solution of 6.3x10⁻⁵M NaOH has a pH:
pOH = -log[OH-] = 4.2
pH = 14-pOH = 9.8
The pH of the solution could be 9.8. Right option is:
<h3>D. 6.3 x 10-5 mol/L NaOH</h3>
Answer:
Pressure of neon = 1.17 atm
Pressure of hydrogen = 0.63 atm
Explanation:
Given data:
Number of moles of H₂ = 2.5 mol
Number of moles of Ne = 4.6 mol
Total pressure = 1400 mmHg (1400/760 = 1.8 atm)
Solution:
We will solve this problem through mole fraction method.
Total number of moles = 2.5 + 4.6 = 7.1
Mole fraction of H₂ Mole fraction of Ne
2.5 mol/7.1 mol= 0.35 4.6mol/7.1mol = 0.65
Pressure of hydrogen = 0.35 × 1.8 atm
Pressure of hydrogen = 0.63 atm
Pressure of neon = 0.65 × 1.8 atm
Pressure of neon = 1.17 atm
Total pressure which is already given is sum of partial pressure of hydrogen and neon gas.
0.63 atm + 1.17 atm = 1.8 atm