Answer:
The Empirical Formular is given as; Ti₆Al₄V
Explanation:
The percent composition of the material is 64.39% titanium, 24.19% aluminum, and 11.42% vanadium.
Elements Titanium Aluminium Vanadium
Percentage 64.39 24.19 11.42
Divide all through by their molar mass
64.39 / 47.87 24.19 / 27 11.42 / 50.94
= 1.345 = 0.896 = 0.224
Divide all though by the smallest number (0.224)
1.345 / 0.224 0.896 / 0.224 0.224 / 0.224
= 6 = 4 = 1
The Empirical Formular is given as; Ti₆Al₄V
Jacques Cartier is the first explorer to reach North America
Answer:
2.677 J/g°C
Explanation:
Quantity of heat required to raise the temperature of the metal,
Q = mc∆T
where m is the mass of the metal, c is the metal's specific heat capacity, and ∆T is the change in temperature that accompanies the heat transfer process
20.0J = 50.0g × c × 150°C
c = 20.0J/(50.0g × 150°C)
c = 2.677 J/g°C
Answer:
The solution is shown in the attached image to this answer.
Explanation:
The first attached image is the complete question.
The second attached image is the solution to the question.
To calculate ΔH of reaction, let's use the following formula
ΔH of reaction= [ΔH of products] - [ΔH of reactants]
note: keep in mind that you have to multiply each value by its coefficient.
ΔH of reaction= [ ΔH CO2 + ΔH H2O + ΔH Na2CO3] - [ΔH NaHCO3]
ΔH of reaction = [ -393.5 + -241.8 + -1130.9] - [ 2 x -947.7]
ΔH of reaction= 129.2 kJ
since ΔH is positive, the reaction is endothermic
