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Five grams of methane is placed in a bomb calorimeter that contains 315 grams of water at 23.17 °C. After the combustion of methane, the temperature of the water is measured to be 28.33 °C. The heat capacity of the calorimeter hardware is 130 J/?C. How much heat was released per gram of fuel burned? Please answer in J/g.
You take 306.5 g of a solid at 30.0 C and let it melt in 400. g of water. The water temperature decreases from 85.1 C to 30.0 C. Calculate the heat of fusion of this solid.
ninickel can be extracted from nickel sulfide concentrates at 1200 c via the following reaction4nios ni3s2s -gt 7nis
From a consideration of the Lewis structure of the thiocyanate ion, SCN- in which carbon has double bond with both the sulfur and nitrogen atoms, what are the formal charges on the sulfur, carbon, and nitrogen atoms respectively
5ml of solution A was added to enough water to make 100ml of solution B. Finally 5ml of solution B was added to enough water to make 100ml of solution C. What was the concentration of Erythrosin B in solution A,B, C
Hydrogenation of carbon double bonds C=C (i.e. adding a hydrogen on each carbon atom and thus reducing the double bond into a single bond: H-C-C-H) is a very common process in organic and polymer chemistry
Problem- Water flows over a waterfall 125m in height. For a system of 3.25 kg H2O that does not exchange energy with its surroundings a) What is Ep at the top of the falls with respect to the base of the falls
To obtain the formation constant of a 1:1 complex, absorbance data in a 10.0 cm pathlength cell at various ligand concentrations (in M) and a metal concentration of 1.67e-03 M were obtained.
Write a balanced equation for the reaction of NaCH3COO and HCl. Express your answer as a chemical equation. Identify all of the phases in your answer. Enter no reaction if no precipitate is formed.
when a metal was exposed to light at a frequency of 4.00times 1015 s-1 electrons were emitted with a kinetic energy of
A sample of oxygen gas has a volume of 150 mL when its pressure is 0.947 atm. What will the volume of the gas be at a pressure if 0.987 atm if the temputure remains constant
when a .28 gram sample of limestone was decomposed by heating 75 millileters of CO2 at 750 mm Hg and 20 degrees celcius were evolved. How many grams of CO2 were produced?
What is the element symbol?
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