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M.r eric castilo purchased alot for PH 1300000 and sold them 2 years later for PH1900000. At what rate did his money earn?
What mass of CaCO3 will produce 8.0 L of CO2, measured at standard temperature and pressure conditions? Molar mass of CaCO3 = 100. g per mole.
The specific internal energy of helium at 300k and 1 atm pressure is 3800j/mol and the specific molar volumeat thesame temp. and pressure is 24.63l/mol.
determine how many grams of CaH 2 are required to generate 145 Litres of hydrogen gas if the pressure of hydrogen is 825 mm Hg at temperature of twenty one degree Celsius? .
A stream of propane is throttled from 20 bar and 518 K to 0.42 bar. This process is irreversible due to frictional losses at the nozzle.
When a ketone is treated with LiAlH4 followed by addition of water, what general class of product results?
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones? i) What is the three dimensional structure of methane? Why?
The half-life for the reaction at 550 C is 81.3 seconds. How long does it take for 78.5% of a phosphine sample to decompose?
calculate how much CaCN2 is required to form 12.6 moles of ammonia? Given that the percent yield is 65.8%?
Choose the stronger of each pair of acids, respectively, and explain why: a) HBrO3 or HBrO b) HBrO2 or HIO2 A. a) HBrO because Br has a lower oxidation state (fewer number of O atoms around it) in HBrO than in HBrO3
At equilibrium, the concentration of [H2]= 0.6 M. What is the EQUILIBRIUM concentration for [H2],[I2]and [HI]? H2(g) + I2(g) 2 HI(g) [HI] =
Solid aluminum reacts with aq H2 SO4 to form H2 gas and aluminum sulfate. when a sample of Al reacts, 425 mL of H2 gas is produced at 24 degree celsius at a press of 744 mmHg. How man grams of Al reacted?
A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the final number of microstates is 0.617 times that of the initial number of microstates?
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