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A flask is charged with 2.00 atm of nitrogen dioxide and 1.00 atm of dinitrogen tetroxide at 25 °C and allowed to reach equilibrium. When equilibrium is established, the partial pressure of NO2 has decreased by 1.24 atm.
(a) What are the partial pressures of NO2 and N2O4 at equilibrium?
(b) Calculate and for Kp and Kc following reaction at 25 °C.
2NO2 (g) ↔ N2O2 (g)
(Answer: K p = 2.80; K c = 68.6)
How many molecules of hydrochloric acid (HCI) are required to react with 10.0
grams of zinc (Zn)?
7. Carbon absorbs energy at a wavelength of 150.0 nm. The total amount of energy emitted by a carbon sample is 1.98 x 105 J. Calculate the number of carbon atoms present in the sample, assuming that each atom emits one photon.
The specific heat capacity for silver is 0.24 J/goC. Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 298 K.
Hello,
I've oxidated lead using electrolysis. I think it should be lead (iv) oxide ( I use 10 V power source and the color of the product is like color of Fe2O3). now I want to make lead (ii,iv) of it.
I've tryed heating it in a plate but it doesn't work. what should I do?
The first order rate of constant for the decomposition of a certain insecticide in water at 12degrees is 1.45/yr. A quantity of this is washed into the pond leading to a concentration of 5.0*10^-7M.calculate the halflife.
Human colour vision is “produced” by the nervous system based on how three different cone receptors interact with photons of light in the eye. These three different types of cones interact with photons of different frequency light, as indicated in the following chart:
Cone Type Range of Light Frequency Detected
S 6.00-7.49 x 1014 s-1
M 4.76-6.62 x 1014 s-1
L 4.28-6.00 x 1014 s-1
What wavelength ranges (and corresponding colours) do the three types of cones
detect?
How many grams are in 0.2 moles of beryllium iodide, BeI2?
2C2H6 + 7O2 = 4CO2 + 6H2O
1. How many moles of CO2 will be produced with 2 moles of C2H6?
2. How many moles of H2O will be produced with 14 moles of O2?
3. How many grams of H2O will be produced with 2 moles of C2H6?
4. How many grams of CO2 will be produced with 7 moles of O2?
5. If 105.68 grams of C2H6 reacts 89.35 grams O2
A. What is the limiting reagent?
B. What is the excess reagent?
C. How many grams of CO2 will be produced?
D. How many grams of H2O will be produced?
E. How many grams will be left from our excess reagent?
An oxide is a compound that contains at least one oxygen atom and only one other element in its chemical formula. Using your knowledge of chemistry comment on the chemistry of oxides.
