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If the water vapor had not been present with more water or less water have enter the test you when it was opened underwater explain your answer
a chemist weighed out 5.25 g of a mixture containing unknown amounts of baos and caos and placed the sample in a 1.50-l
calculate the uncertainty in nm in the position of an electron with the velocity of 2.00x103 ms the velocity is the
Vinegar is 5% acetic acid and its molarity is 0.833M. Is the concentration of the hydronium ion in vinegar greater than, less than, or equal to 0.833 M--why or why not. Explain why it is incorrect to directly calculate the pH of vinegar from the m..
Calculate the maximum concentration in M of silver ions in a solution that contains 0.025 M CO3^2-. The ksp of AG2CO3 is 8.1 x 10^-12
Dentists might use a mixture of 40% N2O and 60% O2 as an initial anesthetic of nitrous oxide(although exact proprtions may vary). Determine the entropy of mixing for 1 mole of such a mixture. Assume ideal gas conditions.
How do you calculate the concentration % of a unknown solution with the equation y=30.662x-0.2147 with a known absorbtion of 0.330
The rate constant for a certain chemical reaction is. 0.0125 L mol^-1 s^-1 at 25 degree Celsius and 0.0125 L mol^-1 s^-1 at 50.0 Celsius. What is the activation energy for the reaction, expressed in kJ mol^-1
How man protons,neutrons, and electrons are there in the neutral atom of the isotope of silver named silver-109
Calculate the amount of energy present in the following photons and find the region of electromagnetic spectrum for each.
Determine the freezing point (°C) of a 0.015 molal aqueous solution of MgSO4. Assume i = 2.0 for MgSO4. The molal freezing-point-depression constant of water is 1.86 °C/m..
Calculate the number of molecules in 7.00 moles H2S, Using Avogadros number calculate the number of molecules in 7.00 moles H2S
Calculate the standard reaction enthalpy for the following reaction. N2H4(l) + H2(g) -----> 2NH3(g) Given: N2H4(l) + O2(g) -------> N2 (g) + 2H2O(g)
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