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Use a diagram with 5 water molecules to illustrate hydrogen bonding between water molecules (start with one molecule in the middle). How many water molecules can hydrogen bond with a single water molecule?
Calculate the molarity of a solution that contains 0.500 mol of AgNO3 dissolved in 250 mL of solution.
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 77. Include any hydrogen atoms and the charge.
how many liters of h2 gas at stp can be produced by the reaction of 4.60g of na and excess water accoring to the
Basically I did a lab on excel with given data from the instructor. Explain which part of the curve changes as Ksp is varied and why
No desiccator is available. The sodium carbonate is cooled to room temperature, but the humidity in the room is high. how will this affect the reported molar concentration of the hydrochloric acid
what is the oxidation number of the specified element in each compound or polyatomic ion: a)C in ZnCO3 b)Fe i Fe(NO3)2 c)Cl in ClF4^- d)S in S2O3^2-
What is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number n=5
Complete the following reactions drawing structural formulas. Write the name of the compounds under them.a. trans-hept-2-ene + Br2 (H2O) --? 2 compounds are possible
Problem- In lab one day, you mix together 300 Ml of 2M Na2HPO4 and 150 grams of NaH2Po4. The resulting solution is then adjusted to the desired Ph with 6M NaOH a) Calculate the initial PH of the buffer soln before the addition of NaOh
A sample of CH3OH contains 3.35 x 10^22 atoms. How many moles of CH3OH are present in the sample?
two gases are contained in gas bulbs connected by a valve. gas a ispresent in a 44 l bulb at a pressure of 381 torr.
Question- A motor vehicle maintenance center wants to improve its services by using database management systems (DBMS) and data mining. What tables are needed in such a database and how can it help improve their services
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