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an aqueous solution of NaOH can dissolve an aluminum sheet in the reaction:
2 Al + 2 NaOH + 2H2O → 2 NaAlO2 + 3H2
The decomposition of NO2 is a second order reaction and the rate constant is 0.755 L/mol-s. In an experiment, the initial concentration of NO2 was 0.00650 mol/L. How many seconds will it take for the concentration of NO2 to drop to 0.00100 mol/L?
write c++ code to get following output 0,1,4,9,16,25 (use array)
(8) (b) Balance and classify each of the following reactions according to one or more of the six classes discussed described in your practical manual. (vi) SO3(g) → ……..O2(g) + …….SO2(g)
(8) (b) Balance and classify each of the following reactions according to one or more of the six classes discussed described in your practical manual. (i) Mg(s) + …….HCl(aq) → …….MgCl2 (aq) + ……H2 (g) (ii) P4O10(s) +……..C(s) → ………P4(s) + …..CO2(g) (iii) AgNO3(aq) + ….NaBr(aq) → …….AgBr(s) + ……NaNO3(aq) (iv) Ba(OH)2(aq) + …H2SO4 (aq) → ……BaSO4(s) + …..H2O(l) (v) Cl2(aq) + …….KBr(aq) → ……..Br2(aq) + …….KCl(aq) (vi) SO3(g) → ……..O2(g) + …….SO2(g)
Balance and classify each of the following reactions according to one or more of the six classes discussed described in your practical manual. (i) Mg(s) + …….HCl(aq) → …….MgCl2 (aq) + ……H2 (g)
How many molecules are in 3.5918 g of sulfuric acid, H2SO4? Show full work. Include units beside every number where applicable. Round your final answer to correct significant figures.
- Write the assembly language code fragment that corresponds with the following high level language code fragment. You will need to use the SUB (subtract) instruction.
If (A>B) OR (B<C) then
A = A + C
Else
B = C - A
- Write the assembly fragment to perform the following:
For x = 1 to 10
A = A + x
Next x
- Write the assembly code for the following high-level pseudo code:
if ((a>=b) AND (b==c)) OR (a<=c) then
a = b + c
else
a = b - c
1. A political campaign manager wishes to survey a number of voters to estimate
the proportion of those who are in favor of his candidate. If a previous survey
shows that 55% of registered voters plans to vote for his candidate, what is the
minimum sample size required to make his surveys accurate with a 95%
confidence level and a margin of error of 2.5%?
A piece of steel is in the form of a tetrahedron whose base is a right-angled triangle. The sides forming the right-angle are 5 cm and 6 cm long respectively. If the height of the tetrahedron is 7 cm, calculate its volume. If the tetrahedron is melted down, calculate the length of bar of diameter 20 mm that can be made from it, assuming no waste.
#339914 on Dec 2023