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A.)The density of liquid oxygen at its boiling point is 1.14, and its heat of vaporization is 213. How much energy in joules would be absorbed by 2.0 of liquid oxygen as it vaporized?Express your answer numerically in joules.B.)Water's heat of fusion is 80., and its specific heat is 1.0.Some velomobile seats have been designed to hold ice packs inside their cushions. If you started a ride with ice packs that held 1900 of frozen water at 0,and the temperature of the water at the end of the ride was 32, how many calories of heat energy were absorbed?
Express your answer numerically in calories using two significant figures.
A solution containing HNO2 has pH=3.40 at equilibrium. Calculate the amount of HNO2 present in 575ml of this solution Ka=0.0004 answer is 0.01 g of HNO2
Identify the major type of interactive force of MgF2? how do you find the major type of interactive force?
A stock solution is prepared by adding 20 mL of 1.31 M AlCl3 to enough water to make 74 mL. What is the Al3+ concentration of 45 mL of the stock solution?
A 643 mL gas sample at STP is compressed to a volume of 285 mL, and the temperature is increased to 26C. What is the new pressure of the gas in Pa? Answer in units of Pa.
positron cannot penetrate matter more than a few atomic diameters but positron emission of radiotracers can be
A component of a protein called serine has the following percent composition by mass: 34.95% C, 6.844% H, 46.56% O, and 13.59% N. It also has an approximate molar mass of 100 g/mol.
Hydrogen atoms that are bonded to an sp3 hybridized carbon atom normally appear between 0.9 & 1.8 ppm and are said to be shielded
Calculate the expectation values for a particle in the state n = 5 moving in a one-dimensional box of length 2.48×10^(?10)m If someone can just help me out with the set up of the problem thatd be helpful.
How many moles of O2 are required for the complete reaction of 43.5 g of C2H4 to form CO2 and H2O
Write the Complete Ionic Equation for the reaction between Magnesium Nitrate and Potassium Hydroxide
Analysis of two unknown organic structures, Unknown compound A (C8H12) is reacted with H2 (excess) in the presence of a palladium catalyst forming compound B (C8H16).
if you were to draw all the products of radical bromination of ethane, how many structures would you draw
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