How many grams of ch4 must be burned to release heat
How many grams of CH4 must be burned to release 490 kJ of heat based on this thermochemical equation:CH4 + 2 O2 --> CO2 + 2 H2O Delta H rxn = -802.3 kJ.
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Calculate the theoretical mass of Ca^2+ ion in one tablet in grams if there is 750 mg CaCO3 and 320mg Calcium per tablet. The tablet weight 1.801 grams.
An 85.0g sample of iron requires 954 J of heat to raise its temperature 25.0C. What is the specific heat of the iron?
How many molecules of carbon dioxide are produced when 134 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
If 69.5 kJ of heat is applied to a 1040. g block of metal, the temperature of the metal increases by 11.4°C. Calculate the specific heat capacity of the metal in J/g°C.
How many grams of barium ion are in a 487-mg sample of the barium compound if a solution of the sample gave 499 mg BaSO4 precipitate? What is the mass percentage of barium in the compound?
The concentration of Mg2+ in a sample of water is 262 mmol/L At what pH will 99% of the Mg2+ be precipitated as Mg(OH)2? Ksp = 8.9 x 10-12
Coefficient of friction between the dam and foundation is 0.55. determine the factors of safety against sliding and against overturning, and also the soil pressure at the heel and toe.
How many liters of gas would be formed at 510 degrees C and 1.00 atm pressure by explosion of 405g of NH4NO3 ? Given the formula: 2NH4NO3(s)--> 2N2(g) + 4H20(g) + O2(g)
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In nursing education, classroom testing plays a crucial role in assessing student comprehension, critical thinking skills, and clinical knowledge.