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Explain the heat of combustion of propane is 2220 kj/ mol. the specific heat of copper is 0.385 j/g *c. Explain how many grams of propane must be burned to increase the temperature of a 10.0kg block of copper from 25.0 c to 65.0c, presuming that none of the heat is lost to the surrounding
Na2CO3 + CaSO4 --> CaCO3 + Na2SO4 Assuming that this reaction is complete and that there is 153mg/l of CaSO4 initially present, what is the mass load of the soda ash taht must be added to complete the reaction in:
What is the percent yield of a reaction in which 145.5 g phosphorus trichloride reacts with excess water to form 69.4 g HCl and aqueous phosphorous acid (H3PO3)
The SMA compont of an element that cannot be sub-divided and still retain the chemical properiets of that element is defined as what
chlorine has two naturally occurring isotopes35cl isotopic mass 34.9689 amu and 37cl isotopic mass 36.9659 amu. if
A solution is made by mixing 52.1 grams of propul chloride, C3H7Cl, and 38.4 grams of propyl bromide, C3H7Br. what is the vapor pressure of propyl chloride in the solution at 25 celsius
Estimate the absolute error in the measurement assuming the absolute error of the balance and thermometer are +/- 0.01g and +/- 0.1 °C respectively.
Calculate the concentration of cadium chloride contaminant in the original groundwater sample. Round your answer to 2 important digits.
15.0 mL of 0.50 M NaOH is added to a 100.-mL sample of 0.376 M NH3 (Kb for NH3 = 1.8 x 10^-5. What is the equilibrium concentration of NH4^+ ions? The answer is 9.0 x 10^-5 M.
The stable allotropic form of phosphorus is P4, in which each P atom is bonded to three other P atoms. Draw a Lewis structure of this molecule and describe its geometry.
Compaire soltuions 2 and 4. how does the common-ion effect influence the ph of solution 4? explain fully, and calculate the expected ph of each of these soltuions.
at tire depot a pair of new tires sells for 216 . the managers special advertise the same tires selling at a rate of
n photosynthesis plants use energy from the sun in combination with carbon dioxide and water to form glucose c6h12o6
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