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| Questions:
TimeLeft: Posted: |
Chemistry
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1st reaction, rate constant 135 1/s at 25 degree celsius. What is the magnitude of K at 95 degree celsius if Ea=55.5 KJ/mol more... |
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Mar 12th |
25 ml of 0.15 M CH3COOH is titrated with 0.15 M NaOH. Calculate the pH of the solutions when 10 ml of NaOH is added
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Mar 9th |
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Calculate the pH of a solution formed when [Ca3(PO4)2] is slightly dissolved in water (Ksp = 1.2 x 10-26) more... |
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Mar 9th |
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how many grams of lead(II) nitrate are needed to produce 49.35g of sodium nitrate? more... |
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Mar 7th |
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when 98.03g of Mg(OH)2 are decomposed, How many grams of water are produced? more... |
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Mar 7th |
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why density of liquid decreases with the increase in temperature? more... |
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Mar 7th |
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Why food is cooked more quickly in a pressure cooker than in a covered pot? more... |
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Mar 7th |
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why a person feels sense of coolong under the fan after bath? more... |
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Mar 7th |
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why crystalline crystals have sharp melting points? more... |
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Mar 7th |
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Jasmine flatbottom, a secret agent working for Lord Voldermort, stole Harry’s secret plan in a dream and wanted to impress him by creating a weapon ag more... |
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Mar 6th |
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Harry J. Potter, a lab technician from Hogwarts University, is trying to make two particular magic potions to attack Lord Voldermort. One of the main more... |
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Mar 6th |
For each of the following salt solutions, indicate whether the solution will be acidic, basic or neutral.
Then using data given below, calculate [ more... |
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Mar 3rd |
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Copper (II) oxide (CuO) decomposes into copper (Cu) and oxygen (O2) gas. What mass of copper will be produced by the decomposition of 1.25 kg CuO? more... |
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Mar 2nd |
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If I have 45 Liters of Helium in a ballon at 25`C and Increase the temperature of the balloon to 55`C, what will be the new volume? more... |
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Feb 27th |
Compared to the freezing point and boiling point of water at 1 atmosphere, a solution of a salt and water at 1 atmosphere has a:
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Feb 25th |
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