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Draw the Lewis structure and shape for the ammonia, NH3. Which of the following statements are correct. VSEPR Choose at least one answer. a. There are 8 valence electrons. b. There are 10 valence electrons. c. The steric number is 3 d. The steric number is 4. e. The steric number is 5. f. The shape of ammonia is trigonal pyramidal. g. The shape of ammonia is tetrahedral. h. The shape of ammonia is trigonal planar.
A gas occupies a volume of 1.0 L at a temperature of 27°C and 500 torr pressure. calculate the volume of the gas if the temperature is changed to 60°C and the pressure to 700 torr
What values are quoted in handbooks for common hydrates of your cation?
we use 1 g of unknown acid added with 120 mL of distilled water ,the solution filtered , then we took 25 mL of this unknown acid for titration. we use NaOH base for titration
Given stock solutions of glucose (1M), aparagine (100 mM) and NaH2PO4 (50 mM), how much of each solution do you need to prepare 500 mL of a reagent that contains 0.05 M glucose
When electrical current of unknown magnitude is run through the device for 3.50 min, 16.1 mL of water-saturated H_2(g) is collected. The temperature and pressure of the system are 25 degreesCelsius and 715 torr.
Give explanation why it is not practical to evaluate the solubility of the two salts AX and BY2, by simply comparing the solubility product constants?
What is the number of moles of iron produced if only 4 moles of NaN3 are consumed. b)Determine the mass of Na2O produced if only 25g of iron
Which of the following describes what happens to the solubility of a slightly soluble ionic compound when a common ion is added to the solution
1. A corrosion technologist pipetted a 100.00 mL hard water sample and titrated it with 37.64 mL of 0.01 M EDTA solution for a total hardness endpoint, and 29.32 mL of 0.01 M EDTA solution for a calcium endpoint.
Write a procedure that would follow to demonstrate the effect of increasingly higher concentrations of hydrochloric acid on its rate of reaction with antacid tablets. Can only use materials listed:
The ionic structure of NH4Cl follows the radius-ratio rule. The ionic radii of NH4+ and Cl are 143 pm and 181 pm, respectively. Use the radius-ratio rule to predict the ionic structure. Describe the properties of the unit cell.
The sulfide content in a pulp plant effluent is determined with a sulfide ion-slective electrode using the method of standard additions for calibration.
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