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Given the mass of chlorine as 26.0g and mass of aluminium as 31.0g. If you had excess chlorine, how many moles of of aluminum chloride could be produced from 26.0 of aluminum?
What volume of 0.50 M sodium hydroxide is needed to titrate 150 mL of 0.33 M hydrocyanic acid (HCN) to the equivalence point?
It says that isothiocyanate(CH3NCS)'s carbon atom actively responses to material that has nonbonding electron(such as OH-). Then, what are proper the resonance structures for CH3NCS?
Calculate the percent yield of C2H5Cl if the reaction produced 180. g of C2H5Cl.
If 28.8g of methane gas CH4 are introduced into an evacuated 2.00-L gas cylinder at a temperature of35c what is the pressure inside the cylinder? note that the volume of the gas cylinder is constant
a gas mixture with a total pressure of 770 mmHg contains each of the following gases at the indicated partial pressures: CO2, 122 mmHg; Ar, 209 mmHg; and O2, 191 mmHg. The mixture also contains heli
Among the elementary subatomic particles of physics is the muon, which decays within a few nanoseconds after formation. The muon has a rest mass 206.8 times that of an electron. Calculate the de Br
If 16.87 grams of nitric acid are reacted with a large amount of aluminum metal, what volume of hydrogen gas would be produced at STP?
Changes in volume affect the value of the reaction quotient, Q, whereas temperature changes affect the value of the equilibrium constant, K.
Hydrazine, N2H4, is used as a rocket fuel. It reacts with oxygen to to form nitrogen and water. How many grams of hydrazine would be needed to react with 100 grams of oxygen?
If the aluminum block is initially at 25^circ C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol co
A solution is prepared by dissolving 2.33g of C60 in 100.0g of toluene. Given that the vapor pressure of pure toluene is 5.00kPa at 30C what is the vapor pressure of toluene in the solution?
How many grams of sodium lactate (NaC3H5O3) should be added to 1.00 L of 0.260 M lactic acid (HC3H5O3) to form a buffer solution with pH 2.90? Assume that no volume change occurs when the NaC3H5O3 i
How efficient is the extraction of tea leaves containing tra1.0g of caffeine with two 30-mL portions of chloroform over that of of a single-step extraction(KD = 8.36 at 25 degrees C)
pka2=6.88, pka3=7.90,pka4=12.10) assume you begin with 10.0mL of a .10M solution. Calculate the pH of the solution and the equilibrium concentrations of all species present.
A student had 1.00 L of a 1.00 M acid solution. Much to the surprise of the student, it took 2.00 L of 1.00 M NaOH solution to react completely with the acid. Explain why it took twice as much NaOH
Calculate the enthalpy change, Delta H, for this reaction per mole of rm X.
Aluminum oxide (Al2O3) is a widely used industrial abrasive (corundum, emery). How is the hardness of an ionic material related to its lattice energy?
How many moles of Na3C6H5O7 can be produced if one tablet containing 0.0119 mol of NaHCO3 is dissolved?
Find the mass of sodium required to profuce 5.68 L of hydrogen gas at STP from the reaction described bu the following equation: 2Na + 2H2O → 2NaOH + H2.
Calculate the pH of a solution made by adding 18 g of sodium acetate, NaCH3COO, to 20. g of acetic acid, CH3COOH, and dissolving in water to make 100. mL of solution.
At a particular temperature and [A]0 = 2.00 x 10-2 concentration versus time data were collected for this reaction. Calculate the half-life for this reaction.
Explain the main concept behind the VSEPR theory of molecular shape. How do both number and type of electron pairs influence the shape of a molecule?