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For the reaction, H2O(l)⟶H2O(g), calculate ΔG at a) 20ºC, b) 100ºC and c) 150ºC.
Calculate the standard-free energy changes for the reaction 2MgO(s) + 2Mg(s) + O2(g) at 25ºC .
With solution
If the temperature of a hot reservoir is 400K, what must the exhaust temperature be so that the efficiency of an ideal heat engine is 25%?
If all the energy of a 20-g bullet travelling at 1km/s is converted into heat, how many calories are generated?
Members of the urban poor receive an average of ₱110 per day with a standard deviation of ₱20. If a random sample of 25 people is taken, what is the approximate mean of the sampling distribution?
Members of the urban poor receive an average of ₱110 per day with a standard deviation of ₱20. If a random sample of 25 people is taken, what is the approximate mean of the sampling distribution?
Members of the urban poor receive an average of ₱110 per day with a standard deviation of ₱20. If a random sample of 25 people is taken, what is the approximate mean of the sampling distribution?
Determine the equivalent of one mole of the following substances, given type of reaction they participate in.
1. NaOH Acid-Base Reaction to form NaCl
2. HNO3 Acid-Base reaction to form NaNO3
3. H2SO4 Acid-Base reaction to form Na2SO4
4. Sr(OH)2 Acid-Base reaction to form SrCl2
5. H3PO4 Acid-Base reaction to form Na3PO4
6. CaCl2 precipitation reaction to form CaCO3
7. H3PO4 precipitation reaction to form Mg3(PO2)2
8. AgNO3 precipitation reaction to form Agl
9. Ba(C2H3O2)2 precipitation reaction to form BaSO4
10. AlBr3 precipitation reaction to form Al(OH)3
11. FeCl3 redox reaction to form FeCl3
12. Br2 redox reaction to form KBr
13. Zn redox reaction to form ZnSO4
14. HCl redox reaction to form H2
15. Cu redox reaction to form CuO
What is the concentration of the solutions of the following:
1. 1mol and 1kg
2. 1mol and 1L
3. 5mol and 100g
4. 4mol and 25mL
5. 20mol and 9L
6. 34mol and 1000kg
7. 9mmol and 100mL
8. 4.3 umol and 600g
9. 4mmol and 15mg
10. 11nmol and 20g
a school administrator claims that less than 50% of the students of the school are dissatisfied by the community cafeteria service. Test this claim by using sample data obtained from a survey of 500 students of the school where 54% indicated their dissatisfaction of the community cafeteria service. use a 0.05
Show that the minimum and maximum points of every curve in the family of polynomials f(x)=2x^3+cx^2+2x lie on the curve y=x-x^3 (Show your working)
#340153 on Dec 2023