Answer:
The four primary functions of managers are planning, organizing, leading, and controlling. By using the four functions, managers work to increase the efficiency and effectiveness of their employees, processes, projects, and organizations as a whole.
Answer:
Q = -14322.77 J
Explanation:
Given data:
Mass of water = 55.0 g
Initial temperature = 87.3°C
Final temperature = 25.0 °C
Heat given off = ?
Solution:
Specific heat capacity:
It is the amount of heat required to raise the temperature of one gram of substance by one degree.
Specific heat capacity of water is 4.18 J/g.°C
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 25.0 °C - 87.3°C
ΔT = - 62.3 °C
Q = 55.0 g×4.18 J/g.°C × - 62.3 °C
Q = -14322.77 J
Answer:
a b c are correct and rest of other are incorrect
Answer:
Heat released =811.68kcal
Explanation:
2 CO(g) + O2(g) → 2 CO2(g) ΔH=-135.28kcal
for this type of question 1st balance the chemical reaction and use unitry method.
From the above balanced equaion it is clearly that,
2 mole of CO reacts with 1 mole of O2 and we have sufficient amount of oxygen means excess amount.
and also for complete consumption of 2 mole of CO, ΔH=-135.28 kcal
for complete consumption of 12 moles of CO2 ΔH=
Heat released =811.68kcal
