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How much concentrated solution would you take to prepare 2.85 of 0.570 by mixing with water? HCl is purchased in 37% mass and has a density of 1.20 g/mL.
What is the pseudoformula of ascorbic acid, given that ascorbic acid contains 3.41 mol of carbon, 4.53 mol of hydrogen, and 3.41 mol of oxygen
The element antimony has an atomic weight of 121.757 amu and only two naturally occuring isotopes. one isotope has an abundance of 57.3 % and an isotopic mass of 120.904 amu based on these data what is the mass of the other isotope.
Determine which flask has the smallest amount of water vapour and which one has greater vapor pressure of H 2 O?
Analysis of an unknown substance showed that it has a moderate melting point and is a good conductor of heat and electricity in the solid phase. Which of the following substance would have those characteristics
Why does tellurium have an endothermic electron affinity. In other words, why would it take energy to add an electron to it
A buffer contains 0.15 mol of propionic acid C2H5COOH and 0.13 mol of sodium propionate C_2 H_5 COONa in 1.20 L.
Calculate the pH of a solution made from 10.0mL of 0.10M HCL, 20.0mL of 0.050M NaOH, and 30.0 mL of 0.20 M NaCl. Ka for HAc (if needed)=1.8x10^-5
a student prepares benzoic acid by hydrolying 6.47g of methyle benzoate (FW 136.15g/mol) using excess sodium hydroxide. If the student recovers 3.71g
For the gas N2O calculate the number of grams are present in 1.05E4 mL under a pressure of 801 mm Hg at 56.3 oC.
Use the octet rule to predict the formula of the simplest compound formed from hydrogen and silicon.
what is the minimum number of kilojoules needed to change 40 grams of water 100 c to stem at the same temperature and
Diamonds are measured in carats, where 1 carat=0.200 g. The density of diamond is 3.51 g/cm^3. What is the volume of a 2.50-carat diamond
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