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How much heat does your body lose when 2.60 of sweat evaporates from your skin at 25 ? (Assume that the sweat is only water.) The heat of vaporization of water at 25 degrees C is 44.0g.
express the velocity of the electron in the Bohr model for fundamental constants, the nuclear charge Z, and the quantum number n. Evaluate the velocity of an electron in the ground states of He+ ion and U91+.
The normal respiratory rate for a human being is 15.0 breaths per minute. The average volume of air for each breath is 0.505 L at 20.0°C and 9.95 x 104 Pa. What is the volume of air at STP that an individual breathes in one day (in cubic meters or..
An open-end manometer containing mercury is connected to a container of gas. The mercury in the arm attached to the gas is 13.6cm higher than the one open to the atmosphere.
Suppose you have two joined metals (Gold and Copper(II)) immersed in 1 M HCl acid, based on the reactants present write possible half cell (anode/cathode) and full cell reaction(s).
6.48 g of NaH2PO4 and 21.96 gm of K2HPO4 are dissolved in sufficient water to make a liter of solution. Calculate the pH of the resulting solution.
When heat is added to a solution of CoCl2 and HCl in water, what happens on the molecular level that causes the reaction to shift. Which way will the equation shift. (Hint: think about bonds forming and breaking.)
How many mL of 3.00 M H2SO4 are required to react with 4.35g of solid containing 23.2 wt% Ba(No3)2
Copper is highly sensitive to oxidation by molecular oxygen. Higher oxidation states of Cu do not catalyze diazocoupling reactions. Define oxidation (loss of electrons) and define a redox half reaction for the oxidation of CuI by O2
Calculate the amount of heat evolved in the complete oxidation of 8.17g of al at 25 degrees celcius and 1 atm pressure. delta H of f for al2O3 id -1676kj/mol
excessive usage of pesticides in the golf field in boryung chungnam province prof hans hometown have let to severe
Give TWO possible reactions you could use in each case and write an equation for each reaction.
A hydrochloric acid solution is standardized using 0.500g of sodium carbonate, Na2CO3. Find the molarity of the acid if 29.50mL are required to reach a phenolphthalein endpoint.
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