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A solution is to be prepared with a sodium ion concentration of 0.487 mol/L. What mass of sodium phosphate (g) is needed to prepare 1.30 liters of such a solution?
Calculate the molar concentration of a solution if the absorbance (A) is 0.355, the molar absortivity (a) is 4.29 x10 to the neg 4 L/mol*cm and the path length (b) is 3.00 cm
Calculate the osmotic pressure at 20C of the solution 0.050M C12H22O11; assume complete dissociation for an ionic solutes.
Write a series of nuclear equations to represent the bombardment of -27 with a neutron to form a product that then undergoes an alpha decay followed by a beta decay.
Working with triple point, The sublimation pressures of solid chlorine are 352 Pa at -112 C and 35 Pa at -126.5 C. The vapor pressures of liquid Chlorine are 1590 Pa at -100 C and 7830 Pa at -80C
The solution is filtered, and a 60.00mL sample titrated with HCl requires 11.13mL of 9.78×10?2 M HCl to reach the end point. Calculate Ksp for Ca(OH)2
An unknown volume of water at 18.2°C is added to 28.7 mL of water at 32.5°C. If the final temperature is 23.5°C, what was the unknown volume. (Assume that no heat is lost to the surroundings; d of water is 1.00 g/mL.)
what is an element with seven electrons in the outer orbit called: metal, halogen, metalloid, noble gas, none of the above
The thermochemical equation representing one process used for the synthesis of ammonia involves the equilibrium shown, N2(g) + 3 H2(g) 2 NH3(g) For this reaction, DH° = -92.2 kJ, DG° = -33.4 kJ. All things considered, one concludes that Question 1..
a wave in the ocean has amplitude of 3m. winds pick up suddenly increasing the waves amplitude to 6m. how does the
A brick consisting of pure metal measures 4.00 inches x 5.00 inches x 3.00 inches and weighs 7.020 kg. Using density, identify the metal in the brick.
What is the rate constant for the reaction at 85°C?
Describe the experiment(s) (as necessary), observations (as necessary), and results (as necessary) which would allow you to distinguish between
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