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The ionic structure of NH4Cl follows the radius-ratio rule. The ionic radii of NH4+ and Cl are 143 pm and 181 pm, respectively. Use the radius-ratio rule to predict the ionic structure. Describe the properties of the unit cell.
Some sugar substitutes are made from derivatives of sucrose. SucraloseTM is a sweetener found in soft drinks and low-calorie foods such as yogurt.
what is the mole fraction of each componet in solution? ethanol, methanol, water.
A 0.456 gram sample of an unknown mono protic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
The pressure in a sealed plastic container is 108 kPa at 41C. What is the pressure when the temperature drops to 22C? Assume that the volume has not changed.
You have been provided with a 0.1M aqueous solution of glycine at pH 9.0. Calculate how much (in ml) of 5M NaOH solution that you must add to 1 L of this 0.1M glycine solution in order to bring its pH to exactly 9.80
Calculate the number or calories of heat energy required for warming 34.6g of water from 18.9 celsius to 29.9 celsius
when 157 mg. of dipentylamine was added to 122 mg. of benzoic acid and 2 mL of water, a completely homogenous solution was formed. Draw the structure of the species present into the water.
At 25°C, K = 0.090 for the following reaction. H2O(g) + Cl2O(g) reverse reaction arrow 2 HOCl(g) Calculate the concentrations of all species at equilibrium for each of the following cases.
A 60.0 g sample of an alloy was heated to 96.0 °C and then dropped into a beaker containing 87.0 g of water at 24.1 °C. The temperature of the water rose to a final 27.63 °C.
How should a professional emergency responder be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
One metric ton (1000 kg) of coal is required to produce 7.3 MW-hr of electrical energy. In 1993, the Thomas Hill power plant (a small, coal-fired plant supplying rural electric cooperatives) produced 7100000.0 MW-hr.
A graduated cylinder contain s 23.0 mL water. what is the new water level after 35.6 g of silver metal is submerged in the water?
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