Ask a New Question
Search
Questions and answers by
Mahnoor
Questions (18)
Solve for x: x – 4(2x – 1) ≥ 2(x – 1)
1 answer
335 views
in todays experiment what length of magnesium ribbon would be required to generate 42.00 ml's of H2?
2 answers
635 views
A 1.0 x 10-2 M solution of a weak acid is found to be 3.7% dissociated. Calculate Ka of this acid.
I found the amount dissociated
2 answers
1,157 views
The rate constant for the decomposition of gaseous azomethane,
C2 H6 N2 (g) > N2 (g) + C2 H6 (g) Is 40.8 min-1 at 425OC. Find the
2 answers
1,062 views
Find inverse of f if f(x)= x^2-4x+3, (for x is smaller than and equal to 2).
First prove that f(x) is one to one in the defined
3 answers
763 views
estimate Delta H for the following reaction
C2H4 (g)+3O2(g)→2 CO2(g)+2 H2O(g) So we have (4) C-H bonds and (1) C=C bond or (H =
3 answers
2,516 views
What is the maximum number of orbitals in an atom that can have the following designations?
(a) 5p (b) 2pz (c) n=4
2 answers
643 views
Give the maximum number of electrons in an atom that can have the following set of quantum numbers.
(a) n=4 (b) n = 5, ml = 1,
2 answers
877 views
The ionization energy of Fe is 434 kJ/mol. What is the maximum wavelength of light capable of ionizing Fe? What type of light is
3 answers
616 views
Consider the Li2+ ion.
(a) Calculate the wavelength of light emitted when the electron jumps from the n=4 level to the n=2 level.
1 answer
908 views
While I3- and Br3- are both stable molecules F3- is not a stable molecule. Provide an explanation.
1 answer
836 views
Suppose that 0.205 g of a mixture containing Na2SO4 and K2SO4 is dissolved in water. An excess
of BaCl2 is added and a
3 answers
2,344 views
Suppose that 50.0 mL of a 0.250 M HCl solution is mixed with 50.0 mL of a 0.100 M
Ba(OH)2 solution in a coffee-cup calorimeter.
4 answers
827 views
Consider the following reaction
AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3 (aq) DH = -66 kJ Suppose that 100.0 mL of 0.100M
3 answers
2,965 views
Suppose that 1.048 g of benzene is combusted in a bomb calorimeter which contains 945 g of
water. The temperature of the water
3 answers
1,451 views
In order to calibrate a bomb calorimeter , 3000 g of water is added to the calorimeter. next,
1.08 x 10-2mol of ethanol (C2H6O)
2 answers
818 views
The standard enthalpy of formation of H2O (l) is -285.8 kJ/mol. Calculate ∆E° for the following
reaction. H2O (l) → H2 (g) +
3 answers
1,304 views
The standard enthalpy of formation of H2O (l) is -285.8 kJ/mol. Calculate DEO for the following
reaction. H2O (l) → H2 (g) +
2 answers
698 views
Answers (4)
Agyee ka solution nai hay na upper walay question may
This is wrong
I'm explaining for HI03 First we assign oxidation numbers to Oxygen and Hydrogen then to any other atom. So oxygen is -2*3 and H is +1. So now let I's oxidation number be x. +1+x+(3*-2)=0 (0 because the overall compound has 0 charge) +1+x-6=0 x-5=0 x=5
You mean 9.6*10^7/1.5*10^-2? If yes the answer is 6.4*10^9
