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Why is the mass of CO2 released into the atmosphere not the same as the 1 kg of butane burned? Equation given is the combustion of butane.
What ions and/or molecules are present in relatively large proportions in a solution of a strong acid HNO3 (aq)
An optical fiber for something is made SiO2 glass (density = 2.2 Mg/m^3). How many Si atoms and how many O atoms are present per millimeter of length of a fiber 10 µm in diameter
Find the mass of S8 required to produce 8.37L of Sulphur Dioxide gas at STP from the reaction described by the following equation:S8 + 8O2 yields 8SO2
When 0.100g of graphite is burned completely in a bomb calorimeter(heat capacity =3.344kJ/?C), containing 3000 g of water, a temperature rise of 0.21?C is observed.
Suppose NaHCO 3 is a dominating constituent - How to find the production rate of NaHCO 3
The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln k versus 1/T (in K) is linear and has a slope of -6542 K. Calculate the activation energy for the reaction.
Determine how much silver ion(Ag+) is left in solution if you mix 0.10 mole of silver nitrate AgNO3 with 0.20 mole of sodium hydroxide NaOH to make a one litre solution.
A mixture of benzene and styrene is fed at a rate of 100 mol/min to a flash tank operating at 25'C. The flash produces equal flows of gas and liquid, with the liquid phase being 95% pure.
calculate the ph at each point indicated when 100 ml of .100 m hf is titrated with .200 m koh a before addition of koh
How many neutrons are there in an atom of lead whose mass number is 208? A) 82 C) 208 E) none of them B) 126 D) 290 8. Atoms of the same element with different mass numbers are called A) ions. C) allotropes. E) isotopes. B) neutrons. D) chemical f..
Which of the following statements best describes the charges on amino acids at neutral pH. Each amino acid contains a positively charged amine and a negatively charged carboxylic acid at neutral pH.
The nuclide 241Am decays with a half life of 458 yrs. If the activity of 241Am in the detector is 3*10^4 Bq, calculate the mass of 241Am present.
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