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How much energy is released when 5.0 g of N2 and 5.0 g of H2 react in a sealed flask at 298 K?
How many joules are required to raise the temperature of 450 mL of water from 30° C to 100 °C?
If 5 J of energy is added to a system that does no external work, how much will the internal energy of that system be raised?
A container with a volume of 14 L filled with gas at 2.00 atm at 283k. What will be the new pressure temperature increase to 321k?
molar mass of KCI
4. Consider the following reaction: C12H22O11(s) -----------> HH2O(g) + 12C(s). The rate of decomposition of C12H22O11 is 0.75 mol/min. What mass of C is produced in 10 seconds?
3. Write the reaction rate equation and identify the order of reaction for the following equations:
a. A + 2B 3C
b. 2N2O5 4NO2 + O2
c. Zn(s) + 2HCl(aq) H2(g) + ZnCl2(aq)
which of the following bonds is the most polar? a.H-C1 b.C-C1 c.H-H d.N-F
In the reaction Mg(OH)2 + 2HCl → MgCl2 + 2H2 O, you were given 15
grams of Mg(OH)2 and 25 grams of HCl. Which of the two reactants is the
limiting reagent? How much MgCl2 will be produced in the reaction? (Mg(OH)2
= 58.32 g/mol, HCl = 36.46 g/mol, MgCl2
= 95.32 g/mol)
Observation x x-μ (x-μ2)
1 5 ? ?
2 8 ? ?
3 7 ? ?
4 12 ? ?
∑x= ? ∑(x-μ)2= ?
Solve for population Mean=?
Population Variance=?
Population Standard Deviation=?
Mean of the Sampling Distribution of the Means=?
Means of Samples Drawn without Replacement from the Population (5,8,7,13) and n=?. Round off answers to the second decimal point.
_
Observation Sample x
1 (5,7,8) ?
2 (5,7,12) ?
3 (5,8,12) ?
4 (7,8,12) ?
_
∑x=?
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