Answer:
0.385 J/g°C
Explanation:
Using the following formula, the specific heat of an elemental substance can be calculated:
Q = m × c × ∆T
Where;
Q = quantity of heat (J)
m = mass (g)
c = specific heat capacity (J/g°C)
∆T = change in temperature (°C)
Based on the given information, Q = 1375J, m = 50g, initial temperature = 22.8°C, final temperature = 94.2°C, c =?
Q = m × c × ∆T
1375 = 50 × c × (94.2 - 22.8°C)
1375 = 50 × c × 71.4
1375 = 3570c
c = 1375/3570
c = 0.3851
c = 0.385 J/g°C
Ignition transformer
1.
Weight of the transformer is more.
2.
Voltage output of the transformer is from 10,000 volts
to 14,000 volts.
3.
Due to lower voltage output, fuel vaporization and
ignition will be slow.
4.
When there is a drop in voltage supply, the transformer
gets affected.
5.
Consumption of electricity is more.
Solid state igniter.
1.
Igniter weighs very light
2.
Igniter giver voltage output in the range of 14,000
volts to 20,000 volts
3.
Higher voltage output leads to faster vaporization of
fuel and ignition
4.
Very small affect is observed when there is a voltage
drop.
5.
Less electricity is consumed.
it should be True unless if I’m wrong
Answer:
12.044 ×10²³ molecules of HCl
Explanation:
Given data:
Number of moles of MgO = 1 mol
Number of molecules of HCl react = ?
Solution:
Chemical equation:
MgO + 2HCl → MgCl₂ + H₂O
with 1 mole of MgO 2 moles of HCl are react.
Number of molecules of HCl react:
1 mole contain 6.022×10²³ molecules
2 mol × 6.022×10²³ molecules / 1 mol
12.044 ×10²³ molecules
