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Calculate the energy required to heat 0.156g of ice at -10.0 degree Celsius to liquid water at temperature of 100 degrees Celsius
Problem- The sensitivity of a spectrophotometer allows detection of 1 percent of one colored form of an indicator (for example HIn) in the presence of 99 percent of the other colored form (In-).
A technician is plating a faucet with 0.86 grams of chromium from an electrolytic bath containing aqueous Cr2(SO4)3. If 12.5 minutes is allowed for the operation, what current is needed
What is the molarity of a phosphoric acid stock used to make 750ml of a dilute 4M solution if 52ml of the stock was used?
A colored solution gives a reading of 39.2% transmittance while determined in a calibrated spectrophotometer. Compute the absorbance of the solution. Define the steps with the solution please
Balanced chemical equation and the net ionic equation for the reaction between aqueous solutions of AgNO3 and CaBr2 and then identify the spectator ions
A buffer that is 0.210 M in acid, HA, and 0.172 M in the potassium salt of its conjugate base, KA, has a pH of 4.66. What is the pH of the buffer after 150. mL of 0.359 M LiOH is added to 0.950 L of this buffer? Assume that the volumes are additiv..
A formula for anti-fungal shampoo contains 2.0% W/V ketoconazole. How many litres of shampoo could be made with 42 g of ketoconazole?
a jet of water with a velocity v1 striking a vane45 degrees that is moving with a velocity vo. determine the forces
In the titration, 34.67 mL of the sodium hydroxide solution was required to react with 0.1082 g KHP. Calculate the molarity of the sodium hydroxide.
ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. from 164.5degc to
The salt during the heating process
a 20-g mass of argon occupies 15.0 l at a pressure of 25 kpa . find the volume of the argon when the pressure is
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