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how much energy is required to warm 100g of H2O from 20 degrees celcius to 80 degrees celcius if it is initially in a 140g glass flask? the specific heat of water is 4.18 J/g degree celcius and the specific heat of the glass is 0.836 J/g degree celcius
A small cube of aluminum measures 15.6 mm on a side and weighs 10250 mg. what is the volume of this cube in cubic cm? how would I find this out.
Element symbols and Chemical formulas - What is the total number of atoms found in each of the following compounds? What is the total number of elements found in each?
A balloon contains 400cm3 of helium at 25degrees and 1atm pressure. If the balloon bursts when the volume exceeds 800cm3. What would be the maximum temperature it could withstand at constant pressure?
Two compounds have the same empirical formula. One substance is a gas, the other is a viscous liquid. How is it possible for two substances with the same empirical formula to have markedly different properties?
The piece of iron with a mass 102.9g was submerged in a graduated cylinder filled with water. The initial level of water was 20.0 ml. The density of iron is 7.86 g/ml.
An unknown metal X with a mass of 28 grams absorbs 58 J of heat. calculate the heat capacity if Its temperature raises from 31.1 °C to 39.9 °C.
Hydrogen chloride gas can be prepared by the following reaction: 2NaCl(s)+H2SO4(aq) 2HCl(g)+Na2SO4(s) How many grams of HCl can be prepared from 2.00 mol H2SO4 and 150g NaCl.
Calculate how much heat is released when 4.5 g of methane is burned in a constant pressure system. (CH4(g) + 2 O2(g> --> CO2(g) + H2O (l) ,delta H = -890 kJ.
An equilibrium mixture of this reaction(NH4HS(s)?NH3(g)+H2S(g)) at a certain temperature was found to have [H2S]= 0.350M and [NH3]= 0.276M .What is the value of the equilibrium constant (Kc) at this temperature.
Suppose that 160 g of ethanol at 30?C is mixed with 230 g of ethanol at 76?C at constant atmospheric pressure in a thermally insulated vessel.
What volume and mass of steam at 100.°C and 1.00 atm would, during condensation, release the same amount of heat as 100. cm3 of liquid water during freezing.
Determine the boiling point of a 1.5m aqueous solution of fructose.
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