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zinc hydroxide is insoluble in water but dissolves when nitric acid solution is added, why? Write a balanced total ionic and net ionic equation for this reaction.
A 49.0 g ball of copper has a net charge of 1.7 µC. What fraction of the copper's electrons have been removed
Heat is now added until the water reaches a saturated vapor state. Find the initial volume, final pressure, work, and heat transfer. Any help would be appreciated, thanks in advance.
A sealed cubical container 22.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 20.0°C
Calculate the final temperature of a mixture of 170.0 g of ice initially at -7.0 degrees C and 318.0 g of water initially at 94.0 degrees C.
What is the isotropic difference (in per mil) at 25 degrees between gas, liquid, and solid phase for the elements carbon and sulfur? Show calculations
A student standing on the ground throws a ball straight up. How long is the ball in the air before it hits the ground
The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, find the cheetah's average acceleration during the short sprint
A car starts from rest and travels for 5.0 s with a uniform acceleration of +1.8 m/s2. How fast is the car going at the end of the braking period
Two cars travel in the same direction along a straight highway, How far must the faster car travel before it has a 15-min lead on the slower car
A speed skater moving across frictionless ice at 8.80 hits a 4.20-m-wide patch of rough ice. What is her acceleration on the rough ice
The t1/2 of a second order reaction is 26.0 hours when the initial concentration of the reactant is 0.256M. How many minutes would it take for the concentration of the reactant to drop from 0.256M t
A color change in the reaction mixture occured after 40 seconds. A. Assuming 25 drops per mililiter for all solutions, determine the inital molar concentration of HIO3
Someday in the future, an astronaut on Mars (where gMars = 3.71 m/s^2) might lean over the edge of 25.0-meter-tall spacecraft , What will be the package's speed when it strikes the ground
Describe: a) its use in medical treatment, b) list a common over the counter medicine that once contained this compound and c) why phenolphthalein is being phased out in over the counter medicine f
Litmus paper is a classic pH indicator. Describe the color change litmus paper undergoes when placed in both acidic and basic solutions
A toy train is pushed forward and released at x0=2.0 m with a speed of 2.0 m/s. What is the magnitude of the train's acceleration after its wheel begins to stick
Phosphate can buffer in three pH ranges. Give the chemical formulas of the buffer pairs and give the range in which each buffers. Start with H3PO4/ H2PO4-1
On a single, light, vertical cable that does not stretch, a crane is lifting a 1,207-kg Ferrari and, below it, a 1,461-kg BMW Z8. Find the tension in the cable above the Ferrari
The first ionization energy of a sodium atom is 0.830 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing sodium atoms
The engine of a motorboat delivers 29.8 kw to the propeller while the boat is moving at 18.0 m/s . What would be the tension in the towline
When considering your own life, which personality theory do you think best describes how your personality developed?
Find the number of moles of water that can be formed if you have 218 of hydrogen gas and 104 of oxygen gas. Express your answer with the appropriate units.
Assuming 100% dissociation, calculate the freezing point and boiling point of 1.83 m AgNO3(aq). Constants may be found here.
When a 8.26-g sample of gaseous hydrogen bromide dissolves in 36.2 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 25.00 oC to 71.53 oC. Calculate H in kJ/mol HB