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What happened to the phenolphthalein indicator during the production of gas? Explain 2. What products may have formed during the combustian of the gas? Support your answers with experimental evidence. Note: Limewater reacts with carbon dioxide to produce a milky white solid 3. The air that we breathe is approximately 20% oxygen. Think about the reaction you just wrote for the complete combustian of acetylene. Which ratio in this investigation (1/2, 1/3, 1/5, or 1/10) allowed the closest amount of oxygen needed for complete combustion? support answer with calculations
calculate the heat change at 100c in each of the following problems. indicate whether heat was absorbed or released.a.
Calculate the pH of a solution that results from mixing 19.5 mL of 0.145 M HCN(aq) with 22.1 mL of 0.108 M NaCN. The Ka value for HCN is 4.9 x 10-10.
How did I get a greater than 100% recovery of benzoic acid?, To quickly summarize, the lab dealt with isolating benzoic acid from a mixture via chemically active extraction.
What is the magnitude of the net gravitational force on the mass at the origin due to the other two masses Take the gravitational constant to be = 6.67×10?11 .
The temperature of a gas is inversely proportional to its pressure. 2. The volume of a gas is directly proportional to the pressure in torr
Conclude the range of pressures that this system can exists as 2 phases By imagine Raoult's law is applied to the system
to calculate the number of molecules of a gas using ideal gas law and avogadros number.ozone molecules in the
what are the metabolic and physiological processes that increase the concentration of protons and carbon dioxide in the
Which of these are isoelectronic to Argon. Mn+7, S-2, Ca+2, Br-, Cr+3, Na+, Ga+3, Ti+4
Chlorine can be generated by heating together calcium hypochlorite and hydrochloric acid. Calcium chloride and water are also formed.
What are the half-reactions for the following reference electrodes? Include physical states. 1) The silver-silver chloride electrode. 2)The saturated calomel electrode.
An object has a mass of 50.0g. When it is dropped into a graduated cylinder containing 15mL of water, the water level in the cylinder rises to 32mL.
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