Describe how you would make the same solution
How much a 6M Na2CO3 stock solution do you need to make 100 ml of a 10% Na2CO3 working solution? Describe how you would make the same solution given a bottle of anhydrous soduim carbonate (MW=105.99g/mole). Show calculations.
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A 0.15g sample of pure ZnCl2*xH2O was placed on an ion exchange column in the H+ form. The H+ released in the eluate required 16.98mL of 0.1024M NaOH to reach a phenolphtalein end point.
The cylinder and hub have a total mass of 30 kg and a radius of gyration of 0.5 m. Assume no slippage. Determine the acceleration of the mass center of the cylinder and hub when P= 90 N.
A motorist driving a 1000-kg car wishes to increase her speed from 20 m/s to 30 m/s in 5 s. Determine the horsepower required to accomplish this increase. Neglect friction.
The solution is weakly conducting compared with a solution of of the same concentration.Which of the following substances could the unknown be: KOH,NH3,HNO3,KClO2,H3PO3,CH3COCH3 (acetone)?
An automobile tire is pumped up to a gauge pressure of 2.0 x 10^5 Pa when the temperature is 27 °C. What is its gauge pressure after the car has been running on a hot day so that the tire temperature is 77 °C? Assume that the volume remain
What are the mole and mass fraction of water at the air side of the interface? At the water side of the interface?
What mass in grams of nitric acid is required to react with 454g of C7H8 and what mass in grams TNT can be made from 829g of C7H8?
A compound of iodine and cesium contains 63.05 g of metal and 67.75 g of nonmetal. How many grams of cesium are in 32.56 g of compound? How many grams of iodine?
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