Search & Filtering
Cell is......unit of living organism
1. Coal gasification converts coal into a combustible mixture of carbon monoxide and hydrogen, called coal gas, in a gasifier: H2Oq) + C(s) –→ CO(g)+ H2(g) AHo = ? Calculate the standard enthalpy change for this reaction from the following chemical equations: 2 C(s) + O2(g)→ 2 CO(g) AHo = -222 kJ 2 H2(g) + O2(g) → H2O1) → 2H2O(g) AHo = -484 kJ H2O(g) AHo = +44 kJ This coal gas can be used a fuel: CO(g) + H2(g) + O2(g) CO2(g) + H2O(g) 2. Predict the change in enthalpy for this combustion reaction from the following equations: 2 C(s) + O2(g) → 2 CO(g) AHo = -222 kJ C(s) + O2(g) 2 Н(9) + Ог(g) → CO2(g) AHo = -394 kJ 2H2O(g) AHo = -484 kJ 3. Use the following calorimetrically determined enthalpy changes to predict the standard enthalpy change for the reaction of ethene with chlorine gas. C2H4(g) + Cl2(g) → C2H3C1(g) + HCl(g) AHo = ? H2(g) + Cl2(g) → 2HCI(g) AHo = -185 kJ C2H4(g) + HCl(g) → C2H5C11) AHo = -65 kJ C2H3C1(g) + H2(g) → C2H5C14) AH. = -140 kJ
Sodium carbonate reacts with Sulphuric Acid. What is the balance chemical equation for the reaction?
If the population size is equal to 5 and the sample size is equal to 3. How many possible sample can be drawn using the formula of without replacement?
If the population size is equal to 3 and the sample size is equal to 5. How many possible samples can be drawn using the formula of with replacement?
A group of students got the following scores in an achievement test:9,12,15,18,21 and 24 . consider the sample of size 3 that can be drawn from this population. Construct a sampling distribution of the resulting means and find the probability
A group of students got the following scores in an achievement test: 9,12,15,18, 21, and 24. Consider samples of size 3 that can be drawn from this population.
B.Construct a sampling distribution of the resulting sample means
SAMPLE MEANS FREQUENCY
PROBABILITY
int x = 32 % 4;
int y= 21 / 15;
cout << x < y;
1. Given A = {2, 4, 6, 8} and B = {3, 4, 5, 6}, determine:
a. A U B
b. A ∩ B
2. Given A = {3, 5, 7, 9} and B = {4, 5, 6, 7}, determine:
a. A - B
b. B - A
c. A ∩ B
1. Express the following statements using quantifiers.
A. All cats have fleas.
B. No one in this class knows how to speak Mandarin.
2.Form the negation of each statement without applying negation to the left of any quantifier.
3. Express each negation in simple English.
Part 2
1. Given A = {4, 8, 12, 16} and B = {6, 12, 18, 24}, determine the following:
a. A U B
b. A ∩ B
c. A - B
d. B - A
#340153 on Dec 2023