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how many joules are required to heat 69g of water(liquid) from 69c to 96 c
1. Define heat
of formation/standard heat of formation ΔHfo.
2. Discuss
standard state and give examples (Padolina et al., 1995).
3. State that
values of standard states of formation are important because these are
conveniently used to calculate changes in enthalpy, ΔH of many
reactions.
4. Give
examples that illustrate the use of standard heats of formation in
calculating changes in enthalpy or ΔH of reactions.
DEADLINE : 03/25/2022
A cache of Hebrew manuscripts known as the Dead Sea Scroll was found in 1947. The
specific activity of Carbon-14 in the linen wrappings of the book of Isaiah was about
0.200 disintegration per second per gram (dps g-1.). Carbon-14 in living materials has
a specific activity of 0.255 dps g-1. The half-life of Carbon-14 is
5.73 x103 years. Carbon-14 decay by First order rate law. Calculate the approximate
age of the linen
Calculate vapor pressure lowering of a solution of 2.00g of asperin(molar mass=180.15g/mol) in 50.0g of methanol (CH3OH) at 21.2°C. Pure methanol has a vapor pressure of 101 torr at this temperature.
how many moles of sodium sulfate will be produced from 25.5 g
of sodium hydroxide?
Balance a reaction between sodium trioxocarbonate and hydrochloric acid
What is the volume, in liters, of the anesthetic given to a patient at a pressure of 1.2 atm
atm with no change in temperature and amount of gas?
Density is a physical property of a molecule that’s measured as mass per unit volume. Given that density is usually expressed in the units of g/cm3, calculate the density of a cube of plastic that has a mass of 2.331 g and an edge length of 1.500 cm (volume of a cube is V = l3). Be sure to show all steps in the process and include units throughout the problem.
At what temperature will 0.731 moles of neon gas occupy 10.30 L at 2.50 atm? Use the equation: MM= ρRTP
Determine the volume occupied by 4.26 g of CO2 gas at STP. Use the equation: V= nRTP
