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Tell what type of chemical reaction is represented by the following chemical equation.
C3H8(g) + 5O2(g) 3CO2(g) + 4H2O(l)
What is the final temperature in a squeezed cold pack that contains 41.0 g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18J/g*C for the solution, an initial temperature of 26.5C.
Construct a reaction table for the process, and use it to calculate Kc at this temperature.
You dissolve 650.0 g of sugar (C12H22O11) in 726 mL of water. The density of wat is 1.00 g/mL.
A student has sample of HNO3 of 340 ml at 25 degrees celsius and add water of 110 ml at 95 degrees celsius then determine the final temperature of the mixture
Determine the percent yield for the reaction between 45.9g of NaBr and excess chlorine gas to produce 12.8g of NaCl and an unknown quantity of bromine gas.
what amount of heat is produced? The specific heat of aluminum is 0.90J/g C?
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.5 cm. Its mass is 1.2 kg. Calculate the density of the metal.
how many grams of the compind potassium chloride must be dissolved in 200 grams of water to make a saturated solution at 60 C.
An unknown metal sample is subjected to a beam of monochromatic light with a wavelength of 322 nm. Electrons are ejected from the metal surface with a velocity of 5.20 x 105 m/s. What is the threshold frequency of the metal?
How many moles of chloride ions are there?
Determine the equilibrium concentrations - what are the new equilibrium concentrations of all species.
What is the atomic mass of unknown element X if it has the following isotopic composition.
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