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A test tube containing CaCo3 is heated until the entire compound decomposes into an oxide and carbon dioxide gas. If the test tube plus contain calcium carbonate originally weighed 30.08g and the loss of mass during the experiment is 4.40g. What was the mass of the empty test tube?
if a temperature increase from 20.0deg.c to 36.0deg.ctriples the rate constant for a reaction what is the value of the
1- explain all aspects of insulin regulation of metabolic pathways in the body.may cover regulation carbohydrate
meteorological balloon contains 375 L of helium at 29°C and 0.928 atm. If the volume of the balloon can vary according to external conditions, what volume would it occupy at an altitude at which the temperature is -40°C and the pressure is 0.031 a..
How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction. The molar mass of KNO3 is 101.11 g/mol. 4 KNO3(s) 2 K2O(s) + 2 N2(g) + 5 O2(g)
Write and balance the molecular equation and then give the ionic and net ionic equations for the neutralization reaction between NH3(aq) and H2SO4(aq).
Integrate the form of the Clausius Clapeyron equation dp/dT = pHvap/RT2 and then use that to compute the triple point temperature of a substance whose enthalpy of vaporization at the normal boiling point of 8.4 ° C is 21.84 kJ/mol, and whose tripl..
For the reaction N2(g)+O2(g) >>> 2NO2(g), Kc=8.3X10^-10 AT 25*C. What is the concentration of N2 gas at equilibrium when the concentration of NO2 is five times the concentration of O2 gas
Nitrogen gas when combined with hydrogen gas forms ammonia gas according to the following equation N2(g) + 3H2(g) = 2NH3(g). Delta H(rxn)=-56 kJ. The delta H(rxn) was determined using Hess's Law and the following three related reactions:
Separate the following four compounds using extraction and isolate them in their neutral (as shown) form. Follow the flow chart in Padias (but draw the compounds instead of using the generic "HA," "B," or "N" notation).
where r is the radius. Compute the volume of a sphere with a radius of 593 pm. State your answer in units of m3.
Suppose a steel ball bearing (density 7.8 ? 103kg/m3, diameter 3.2 mm) is dropped in a container of motor oil. It takes 15 s to fall a distance of 0.45 m. Calculate the viscosity of the oil.
A fishing boat accidentally spills 6.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 102 nm thick, how many square meters will the oil slick cover?
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