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A) When 54.9 g calcium as well as 34.0 g nitrogen gas undergo a reaction that has a yield of 98.0%, explain what mass of calcium nitride forms?
B) Compute the final volume of a 0.0746 M solution prepared by diluting 20.2mL of 0.155 M lithium carbonate with water.
which compartment (A or B) will increase in volume for each of the following pairs of solutions separated by a semipermiable membranes: a) A.20%(m/v) starch B.10%(m/v) starch. b) A.10%(m/v) albumin B.2%(m/v) albumin. c) A. .5%(m/v) sucrose B. 5%(m..
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 414 units was obtained for the intensity of the 671 nm red emission line. Then 1.00 mL of a 11.9 mM Lithium sta..
What flow rate of air must be entering the hood so that the hydrogen gas does not pose a flammability hazard
If the solubility of phthalic acid in nearly boiling water is 180 g/L, how much water is required to recrystallize 2.0 g of phthalic acid?
Although the aluminum cylinder is a solid (and, therefore, is quite in-compressible), it actually contains quite a bit of empty space.
a rectangular block of plastic, measuring 1.50 cm by 2.29 cm by 1.84 cm, floats in the middle of the Pacific Ocean. The volume of sea water displaced by the plastic block is 5.46 cm3. Assuming the density of the sea water is 1.025 g/mL, what is th..
assume that you piper twenty milliliters of 0.350m cacl2 into a fifty milliliter volumetric flask and add di water to
How many moles of S8 are needed to make 0.600 moles of SF4? S8 + 8 Cl2 = 8 SCl2 ; 3 SCl2 + 4 NaF = SF4 + S2Cl2 + 4 NaCl
What is the millimolar (mM) concentration of ethanol in the blood at this limit. The density of ethanol is 0.789 g/ml.
Give two reasons why the product is concentrated in the distillation flask during a continuous solid-liquid extraction. 2) what difficulties may be encounter during the determination of the melting point of caffeine?
A buffer solution contains 0.219 M CH3NH3Cl and 0.428 M CH3NH2 (methylamine). Determine the pH change when 0.097 mol HI is added to 1.00 L of the buffer.
Why must we know both in order to explain the physical properties of the molecule. physical properties to be considered are solubility and the points when the molecule changes states
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