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Explain what is the mass number of a carbon isotope that consists of 6 protons, 6 electrons and 8 neutrons?
If 32.78 mL of NaOH solution is required to neutralize 20.00 mL 0f 0.2500 M of oxalic acid, H2C2O4(aq), what is the concentration of the NaOH solution. The balanced equation is: 2 NaOH(aq) + H2C2O4(aq) ? Na2C2O4(aq) + 2 H2O(l)
The following heats of formation are used to find the change in enthalpy for the formation of tin chloride in the following reaction Sn (s) + 2Cl2(g) --> SnCl4(l).
An equilibrium mixture at 225 degrees C contains 0.10 M NH3 and 0.20 M H2 for the reaction 3H2 (g) + N2 (g) --- 2NH3(g) If the Kc at this temperature is 1.7 X 10 2.
The rate constant for a certain reaction is = 4.60×10-3 s^-1. If the initial reactant concentration was 0.900 M , what will the concentration be after 5.00 minutes
if two atoms of element A react with three atoms of element B, what is the chemical formula for the resulting compound
A complex ion, [ML6]2+, is orange in solution. If the same metal forms a complex with another ligand, Q, that creates a stronger crystal field. What color(s) could [MQ6]2+ be
A 0.003525-mol sample of an organic compound was burned in oxygen in a bomb calorimeter. The temperature of the calorimeter increased from 24.5oC to 26.7oC.
Calcium hydroxide, Ca(OH)2, has a solubitlity of 1.85 g/L at 0.0 C. What is the solubility product constant (Ksp) for a saturated solution of Ca(OH)2 at 0.0 C
3.06 grams of hydrogen is allowed to react with an excess of o2 gas to form 27.35g of h2o. in a second experiment
A hydrated form of copper sulfate (CuSO4·x H2O) is heated to drive off all the water. If we start with 9.47 g of hydrated salt and have 5.29 g of anhydrous CuSO4
In the chlorination of cyclohexane there are two types of termination steps: recombination and disproportionation. 1) give two products of recombination:
sulfur dioxide was allowed to effuse through a small opening under constant pressure conditions. It required 179 s for 1.00 L of this gas to effuse. Calculate the effusion time of arsine (AsH3) under identical experimental conditions
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