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which of the following is an example of a chemical change?
A)Iron changes when heated
B)Gas bubbles form in boiling water
C) Balls of wax form when melted wax is poured into ice water.
D)A gas forms when vinegar and baking soda are mixed
The standard free energy (?G0') for the hydrolysis of ATP is -30 kJ/mol. The free energy for the hydrolysis of ATP in the cell (?G) is -50 kJ/mol. Which number is closest to the ratio of [ADP][Pi]/[ATP] found in the cell? R=8.314 J/mol*K T=310K An..
Consider 4.70 of a gas at 365 and 20. . If the container is compressed to 2.00 and the temperature is increased to 38 , what is the new pressure, , inside the container? Assume no change in the amount of gas inside the cylinder.
In industrial process, the stoichiometric ratio of CO to H2 is used. If the reaction is carried out at a totl pressure of 30 atm, what partial pressures of CO and H2 are used
Ammonium Chloride and sodium hydroxide. Sodium cyanide and ammonium bromide. Potassium hydrogen sulfate and lithium acetate. Ammonia hypochlorite and ammonia
The heat of vaporization of water is 9.72 Kcal/mol. How much heat (in kilocalories) is required to vaporize 2.70 mol of H2O and how much heat (in kilocalories) is released when 440 grams of steam condenses
If a sample of argon takes place the volume of 208mL at 19 degree C and 755torr at a temperature in degree Celsius would the volume be at 162mL at 675torr
The normal respiratory rate for a human being is 15.0 breaths per minute. The average volume of air for each breath is 0.505 L at 20.0°C and 9.95 x 104 Pa. What is the volume of air at STP that an individual breathes in one day (in cubic meters or..
Does physical or chemical change take place when sugar dissolved in water. Briefly explain. Explain how can you recover sugar from a sugar solution
If 10.00 mL of 0.050M KI solution is mixed with 40.00 mL of other reagents what would be diluted concentration of KI
nitrogen gas enters a 0.110-m diameter pipe at 30.0degc 2.70 atm and 7.20 ms. the pipe then rises 26.0 ft and then
Determine the subunit composition of this protein from the following information: 10 points Molecular mass of the native proteinby gel filtration is 300 kD Molecular mass by SDS-PAGE
Problem- 200 mL of clear saturated PbI2 is added to1800mL of a buffered solution (pH=5) saturated with H2S (0.1M). Will a precipitate from
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