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How many calories are needed to raise the temperature of a 45.0 g sample of iron from 15 degree celisus to 25 degree celsius? iron has a specific hear of 0.108 cal/c
What is the relationship between the atomic numbers and the ionic radius of the elements in a group.
Describe the Bohr effect in oxygen binding by hemoglobin, including all structural
Table salt (NaCl) and sugar (C12H22O11) are accidentally mixed A 5.00g sample is burned and 2.20-g of CO2 are produced. What is the mass percentage of the table salt in the mixture.
Calculate the partial pressure of water at 23.6 Celsius by interpolation from the vapor pressure table.
A gamma ray has a frequency of 3.5 x 1019Hz. Determine the wavelength of this radiation in nm and the energy of a photon of this radiation.
explain the anomalous behavior of water when it freezes. That is, why is there water axpansion upon solidification
NaOH + CO2 - >Na2CO3 + H2O. If the average human body discharges 716 g of CO2 per day, how much NaOH is needed each day for each person in the spacecraft? Answer in units of mol.
A catalyst decreases the activation energy of a particular exothermic reaction by 59 kJ/mol, to 51 kJ/mol. Assuming that the mechanism has only one step, and that the products are 94 kJ lower in energy than the reactants
What is the term for an attraction between two molecules with temporary dipoles
substance a and b are the same mass and at the same initial temperature. When the same amount of heat is added to each the final temperature of a is 75 degrees celsius
Description of Chemical Reactions, Why when heating and cooling three different separate substances in open containers does the mass change in two of them (one loss mass; the other gained mass) but stays the same in the third when it is known that..
Compound Y contains only carbon, hydrogen, and oxygen. When a 1.000-gram sample of Compound Y is subjected to combustion analysis, 2.432 grams of CO2 and 0.574 grams of H2O are produced. Determine the empirical formula of Compound Y.
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