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If 10ml of 0.1M zinc nitrate were added to 25mL of 0.1M Ba(OH)2, what would you obersve? write a chemical reaction for this process.
If a sample of the supernatant from the reaction above were used as part of a half cell along with a zinc electrode and the other half-cell was a standard hydrogen electrode, what is the potential of the cell? (Ksp (Zn(OH)2 = 3.0x10^-17
reaction takes place in acidic solution, \rm H_2O{(l)} and \rm H^+{(aq)} will be involved in the reaction. Places for these species are indicated by the blanks in the following restatement of the equation
How long would it take for a radioactive isotope with a half life of 2 weeks to lose at least 70% of its radioactivity? Describe two clinical uses of Radioactivity.
The mass of 158 mL of the gas, measured at 556 mmHg and 310 K is found to be 0.275 g. What is the molecular formula of the compond?
If there is the possibilty that the container may rupture if the pressure exceeds 8.0 atm, at what temperature is rupture likely to occur?
An open-end manometer containing mercury is connected to a container of gas. The mercury in the arm attached to the gas is 13.6cm higher than the one open to the atmosphere.
The first-order rate constant for the decomposition of a certain hormone in water at 25 degrees C is 3.42*10^-4 day^-1. If a 0.0200 M solution of the hormone is stored at 25 degrees C for 10 months
Write out the additional equations you would need to consider. d. Confirm that the number of equations is equal to the number of unknowns.
This strontium isotope is radioactive, with a half-life of 28.1 yr. Calculate how long it will take for 0.890 g of the isotope to be reduced to 0.250 g by decay.
What is the pH of a buffer that consists of 0.45 M CH3COOH and 0.35 M CH3COONa? Ka = 1.8 × 10-5
A mixture of 6.0 mol of H2(g) and 3.0 mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 27 C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
when ethane (C2H6) is burned, how many grams of oxygen are needed to react with 477 grams of ethane?
The decomposition of N2O5 (g) to NO2 (g) and O2 (g) obeys first-order kinetics where k = 3.4 x 10-5 s-1 at 25 C, what is the initial rate of reaction
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