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(a) A solution containing 3.23 grams of an unknown compound dissolved in 100.0 grams of water freezes at -0.97degrees Celsius. The solution doesn't conduct electricity. Compute the molar weight of the compound. The molal freezing point depression constant for water is 1.86 degrees C kg mole -1.
(b) Elemental analysis of this unknown compound yields the following percentages by weight H= 9.74 %; C= 38.70 %; O= 51.56%.Find out the molecular formula for the compound.
in the reaction between potassium carbonate and calcium nitrate balanced eq k2co3 cano32--gt k2no32 caco3 why wouldnt
A 300.0-mL saturated solution of copper(II) peroidate (Cu(IO4)2) contains 0.44 grams of dissolved salt. Determine the Ksp.
What is the formula for the principle molecular or ionic species present in a aqueous solution of hydrogen bromide
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The Ksp of HgS is around 10^-54. How many liters of water should it take to dissolve one molecule of this compound
What is the value of Kc for the reaction 2A(g) + 3B(g) 2C(g) + D(g) if at equilibrium [A] = 0.60 M, [B] = 0.30 M, [C] = 0.10 M and [D] = 0.50 M? A) 0.088 B) 0.51 C) 2.4 D) 0.15
a 5.96-g sample of homogentisic acid a weak organic acid having ka4.0 x 10-5 is dissolved in 35.0 ml of water and its
The mass percent of an element in a compound is the mass of the element (total mass of the element's atoms in the compound) divided by the mass of the compound (total mass of all atoms in the compound) times 100%. What is the mass percent of each ..
Describe how you would prepare 500mL of a single solution containing 250mM Tris, 50mM glucose, and 5mM NaCl.
A 125.0g sample of copper is initially at 25.0oC. It absorbs 12.50 kJ heat from its surroundings. What is the final temperature to the nearest tenth degree? Specific heat copper = 0.3874 J/goC.
The boiling point of a liquid increases as the pressure above the liquid increases. In contrast to boiling food in an open pot, pressure cookers trap the steam, which raises the internal pressure, which raises the boiling point of water, causing a..
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