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A #5 L# container holds #9 # mol and #12 # mol of gasses A and B, respectively. Every three of molecules of gas B bind to two molecule of gas A and the reaction changes the temperature from #320^oK# to #210 ^oK#. By how much does the pressure change?

Calculate #E_("cell")# for this reaction when [#H^+#] = 4.5 M and [#HSO_4^#] = 4.5 M, if #E°_("cell")# = 2.04 V?

Consider the equilibrium system #CO(g) + Fe_3O_4(s) ⇌ CO_2(g) + 3FeO(s)#
How does the equilibrium position shift as a result of each of the following disturbances?

Calculate the % w/v NaOCl in the sample of bleach ??

A first order reaction take 100 minutes for completion of 60 Decomposition of 60% of reaction find the time when 90% of reaction complete?

Calculate the mole of carbon dioxide when 11.2L of methane atSTP is ignited in excess of air?please explain?

Why does oxygen form an #O^(2)# ion and not an #O^(3)# ion?

What is the weight in grams of silver displaced by 0.1 mole of magnesium?

Question #b451c

The rate constant of a reaction at 32°C is measured to be #"0.055 s"^(1)#. If the frequency factor is #1.2xx10^13s^1#, what is the activation barrier?

How would you balance #"H"_3"BO"_3"##rarr##"H"_4"B"_6"O"_11" +H"_2"O"#?

An oxygen tank kept at 20oC contains 28.0 moles of oxygen and the gauge reads 31.0 atm. After two weeks, the gauge reads 10.5 atm. How many moles of oxygen were used during the twoweek period?

The minimum energy needed to dissociate iodine molecules, I2, is 151 kJ/mol. What is the wavelength of photons (in nm) that supplies this energy, assuming each bond dissociated by absorbing one photon?

What is the final equilibrium temperature when 20.00 grams of ice at 15.0°C is mixed with 5.000 grams of steam at 120.0°C?

Fill The ICE table, calculate the concentration of each gas, write Kc expression..?

What is the energy released by 20 grams of 100°C steam that condenses and then cools to 0°C?

Question #2eafd

A solution contains #[OH^] = 4.0 times 10^5# #M#, what is the concentration of #[H_3O^+]#?

An object travels North at # 8 m/s# for #3 s# and then travels South at # 7 m/s# for # 8 s#. What are the object's average speed and velocity?

What is the average atomic mass of an element if, out of 100 atoms, 5 have a mass of 176 amu, 19 have a mass of 177 amu, 27 have a mass of 178 amu, 14 have a mass of 179 amu, and 35 have a mass of 180 amu?

If #"0.50 M"# of #"NH"_4"OH"# were to dissociate in water, and #K_b = 1.773 xx 10^(5)#, what is the resultant #"pH"# at equilibrium?

What is the number of pi bonds in the molecule below?

A yoyo is made of 3 disks (same material) and the inner one is 3times smaller than the two outer ones (R/r=3). A string (small thickness) is wrapped around the center disk. What will its acceleration be equal to?

Calculate the potential E for the Fe3+/Fe2+ electrode when the concentration of Fe2+ is exactly five times that of Fe3+?

Complete the following reaction?
#"C"_2"H"_5"COOH"+"C"_2"H"_5"OH">#

How do you graph and list the amplitude, period, phase shift for #y=sin((2pi)/3(x1/2))#?

Five books of different heights are arranged in a row. Find the probability that
(a) the tallest book is at the right end.
(b) the tallest and shortest books occupy the end position
(c) the tallest and shortest books are together
?

The halflife of a radioactive isotope is 20.0 minutes. How much of a 1.00 gram sample of this isotope remains after 1.00 hour?

Find the ionization energy of #"C"^(5+)#?

How would the equilibrium concentration of #H_2O# be affected by removing #H_2# from the mixture?

How do you calculate the equilibrium concentration of #H_3O+# in a 0.20 M solution of oxalic acid?

How do you find the inverse of #f(x)=sqrt(x3)#?

The formula for the oxalate ion is #C_2O_4^(2)#. What would you predict the formula for oxalic acid to be?

Identify the equation for which #K_c = ["Ni"^(3+)]["Cl"^]^3#.?

If the EPA allowable limit is 30 micrograms per liter how many atoms of uranium are present in 1 L?

A 100.0 mL sample of a solution that is 0.125 M in HClO and 0.130 M in NaClO has added to it 2.00 mL of 0.100 M HCl. The Ka for HClO is 2.9 x 108.
What is the pH of the resulting solution?

Question #48f53

What is the pH if 50.0 mL of 0.100 M HCN is mixed with 100.0 mL of 0.100 M NaOH?

Titration problem?

How do you write an equation of a circle that passes through the points (3,6), (1,2), and (6,5)?

3H2 + N2≥ NH3. All of the following will lead in this reaction to the production of more NH3 except? Correct answer is a decrease in the volume of the container, but by decreasing volume pressure increase(Boyle's law) so reaction should proceed in f

Why does CS2 have higher boiling point than OCS (C as central atom)?

Can anyone help?

Total electrons with quantum number n=4 l=1 s=1/2?

Balance the chemical equation
FeSO4  Fe2O3+SO2+SO3
?

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A wire has a resistance of 100 ohms. It is compressed to half of its original length keeping volume same then what will be its new resistance in ohm?

If you drop a 200 gram piece of metal with a temperature of 110 degrees Celsius into 1000 grams of water at 25° Celsius, what best describes what would occur?
The water will quickly reach the boiling point.
The water's temperature will stay the same, b

Define auto redox reaction. Balance the following equation by ionelectron or oxidation number method:
#"K"_2"Cr"_2"O"_7(aq) + "FeSO"_4(aq) + "H"_2"SO"_4(aq) > "K"_2"SO"_4(aq) + "Cr"_2("SO"_4)_3(s) + "Fe"_2("SO"_4)_3(s) + "H"_2"O"(l)#?

11. An electron jumps from 3rd orbit to 1st orbit in Hatom. Find out the wavelength of emitted
radiations?

A chemical reaction has #\ \ DeltaH^{circ}=5.8\ text{kJmol}^{1]\ \ # and an equilibrium constant of #\ \ 2.1\ \ # at #\ \ T=298\ K.\ \ #...?

What is the standard form of #y= (2x+4)^2(x7)^2 #?

A cone has a height of #12 cm# and its base has a radius of #8 cm#. If the cone is horizontally cut into two segments #4 cm# from the base, what would the surface area of the bottom segment be?

One of the compound below is called a refractory material? A. CaO B. CuO C. ZnO D. PbO

How many liters of a .500M #H_2SO_4# must react with excess #Cu# to produce 15.0 g #CuSO_4#?

Phenylbutazone can be synthesised, in a multistep process, starting
from compound A.
Elemental microanalysis showed that compound A has a composition, by
mass, of
50∙0% C; 5∙60% H; 44∙4% O
Calculate the empirical formula of compound A?

A 1.0 kW heater supplies energy to a liquid of mass 0.50 kg. The temperature of the liquid changes
by 80 K in a time of 200 s. The specific heat capacity of the liquid is 4.0 kJ kg–1K–1. What is the
average power lost by the liquid?

Even if i keep on increasing the frequency,why does the no of photoelectrons emitted from a metal surface reach a maximum and remain constant at that value?

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You deposit $200 in a savings account.for each year thereafter , you plan to deposit 15% more than the previous year . About how much money will you have deposited in all after 20 years?

How many moles of oxygen are produced by the decompositon of 6.0 moles of potassium chlorate, KCLO3?

When 168 joules of heat is added 4 grams of water at 283 K, what is the resulting temperature?

The method of bleaching paper pulp with chlorine is replaced by a green chemical method using non toxic chemicals. Chlorine is highly oxidizing, producing toxic by products such as furans and dioxins in organic chemicals. find a), b) and c)?

0.1 mole of #N_2O_4(g)# was sealed in a tube under oneatmosphere conditions at #25^o#C. Calculate the number of moles of #NO_2(g)# present, if the equilibrium #N_2O_4(g) > 2NO_2(g)# #(K_p = 0.16)# is reached after some time?

How do you calculate the standard cell potential of a cell constructed from #Mg^(2+)#/#Mg# and#Ni^(2+)#/#Ni#. Which halfcell is the anode and which halfcell is the cathode?

What are the asymptotes of #y=1/(x2)+1# and how do you graph the function?