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Question:
Talc (used in talcum powder) has mass- composition 19.2% Mg, 29.6% Si, 42.2% O, and 9.0% H.
What is the empirical formula of the compound.
Precisely 1.00 x 10-3 mol of CaCl2, 0.100 mol of NaOH and 0.100 mol of Na3T were mixed as well as then diluted to 1.00 L. Explain what was the concentration of Ca(2+) in the resulting mixture
How many Micromoles of A- and HA are present in the solution. If you now add 3mL of 1M NaOH, will you still have a valid buffer.
4500J of heat are absorbed by a calorimeter. The temperature of the calorimeter increases from 14c to 121c. Calculate the heat capacity of the calorimeter.
A compound of elements X and Y has the molecular formula X2Y3. Let Mx be the atomic mass of element X and MY (subscript-y) be the atomic mass of element Y.
To protect your radiator from freezing the mechanic fills it with a solution made by mixing 50kg of water with 12kg of ethylene glycol (HOCH2CH2OH). If the freezing point of pure water is 0 C, explain what is the freezing point of the solution in ..
Draw the enantiomer of proline which would give rise to the absolute stereochemistry and draw a proposed catalytic cycle for the transformation and how does the catalyst activate the substrate
The osmotic pressures required for this process can be as high as 20.1atm . What would the molar concentration of the tree sap have to be to achieve this pressure on a day when the temperature is 32 C
Suppose that 2.00mL of isopently alcohol was reacted with excess acetic acid and that 2.00g of isopentyl acetate was obtained as product. Calculate the percentage yield.
which molecule will undergo only London dipersion forces when interacting with other molecules of the same kind?
What is the molecular arrangement of bonds at every carbon atom of crotononitrile. (ex like trigonal plant, trigonal pyramidal, linear etc.)
The reaction that produces the water gas mixture is as follows: C(s) + H2O(g) ? CO(g) + H2(g) This reaction requires an input of 131 kJ of heat for every mole of carbon that reacts. Is this reaction endothermic or exothermic
Briefly explain why precipitates are usually rinsed with distilled water before they are tested further
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