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Suppose that 24 of each of the following substances is initially at 29.0. What is the final temperature of gold upon absorbing 2.30 of heat?
a solution is prepared by dissolving 396 grams of sucrose in 624 grams of water. what is the vapor pressure of this solution at 30 degrees celsius.
Calculate the pH of a buffer made with 0.50 M phosphoric acid and 0.75 M sodium dihydrogen phosphate. Ka = 7.5 x 10^-3
A hot air balloon is filled with air to a volume of 4.00x10^3 meters cubed at 745 degrees celcius. the air in the ablloon is then heated to 62 degrees celcius, causing the balloon to expand to a volume of 4.20x10^3 meters cubed.
What is the second step in the scientific method? 1-to analyze the data, and create a theory to confirm the experimental observations 2- to analyze the data, and propose a tentative hypothesis to explain the experimental observations.
Draw the LUMO Huckel MO for the cation 1, 3, 5-heptatriene (carbocation is carbon 7). Also, please state the number of pi electrons in this conjugate system
What mass of CaCl2, when dissolved in 100.00g of water, gives an expected freezing point of -5.0 degrees celcius; CaCl2 is ionic?
A buffer that contains 0.55 M base, B, and 0.30 M of its conjugate acid, BH+, has a pH of 8.94. What is the pH after 0.0020 mol HCl is added to 0.25 L of this solution.
Calculate the standard reaction enthalpy for the reaction above (as written) using the following data: N2(g) + O2(g) -→ 2 NO(g)
Calculate the Pickering series wavelength associated with the excited state ni = 9.What region of the electromagnetic spectrum does this transition fall in?
Explain why cis dichloroethene has a boiling point of 60 degrees C while trans - dichloroethen has a boiling point of 48 degrees C.
When numbers are very small or very large, it is convenient to either express the value in scientific notation and/or by using a prefix with the unit.
The decomposition of NO2 (shown below) has a KP = 4.8 × 10-6 at a certain temperature. If 1.36 atm of NO2 is placed in a flask at this temperature
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