Like, the first one is
Na ->1
O ->1
H-> 1
Total->3
And so on
Answer:
95.7 cal
Explanation:
The heat required can be calculated as follows:
heat = m x Cp x ΔT
Where:
m = mass of iron = 87 g
Cp = specific heat of iron = 0.110 cal/g.°C
ΔT = change in temperature = final T - initial T = 40°C - 30°C = 10°C
Thus, we introduce the data in the mathematical equation to calculate the heat in calories:
heat = 87 g x 0.110 cal/g.°C x 10°C = 95.7 cal
A change of 1 Kelvin is exactly the same as a change of 1 degree Celsius.
Answer:
3.25 L
Explanation:
A 2.0M solution of HCl will have 2 moles of HCl for each liter of solution. 1.5 liters of 5.0M NaOH has a total of 5*1.5=7.5 moles of NaOH. Therefore, you would need 7.5/2=3.25 liters of HCl. Hope this helps!