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What is the overall structure of a DNA molecule
What is chemistry
Question- From its electronic configuration, predict which of the first 10 elements would be most similar in chemical behavior to the as yet undiscovered element 165.
If you have 340.0 mL of water at 25.00 °C and add 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture. Use 1.00 g/mL as the density of water.
Phenol, C6H5OH, is a weak organic acid. Suppose 0.515 g of the compound is dissolved in exactly 125 ml of water. The resulting solution is titrated with 0.123 M NaOH.
Determine the percent yield for the reaction between 82.4g of Rb and 13.49g of O2 if 39.7g ofRbO2 is produced
Assume a solution of acetic acid (pKa 4.7) has been partially neutralized with a base to a pH of 6.0. Determine the percent of acid present.
Problem- Calculate the pH at the equivalence point in titrating 0.100M solutions of each of the following with 9.0x10-2. M NaOH.
How do you write structural formulas for all the constitutionally isomeric compounds having the given molecular formula C3H9N,
When X rays of wavelength 0.096 nm are diffracted by a metallic crystal, the angle of first-order diffraction (n = 1) is measured to be 15.2°. What is the distance between the layers of atoms responsible for the diffraction?
Problem- Calculate the heat vaporization of diethyl ether if the vapor pressure of diethyl ether is 400 mmhg at 18 C. And is 760 mmhg at 35 C.
Identify the chiral centers with asterisks and label each center as R or S.
Question- What is the pH of the resulting solution if 40.0mL of 0.10M CH3CO2H is titrated with 10.0mL of 0.10M NAOH. Assume that the volumes of the solutions are additive. Ka = 1.8 x 10^-5 for CH3CO2H.
What is the mass of the test tube
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