Determine the empirical and molecular formula of the compoud
a compound is determine to contain 4.36g phosphorus and 5.64g oxygen and a molar mass of 284 g/mol. Determine the empirical and molecular formula of this compound.
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A 115 mL sample of a 11.0 M ethylene glycol (rm C_2H_6O_2) solution is diluted to 1.40 L. What is the freezing point of the final solution? (Assume a density of 1.06 g/mL for the final solution.)
What is the magnitude of the change in momentum of the ball while in contact with the bat if the ball leaves with a velocity of (a) 18 m/s, vertically downward, and (b) 18 m/s, horizontally back toward the pitcher?
What are possible sources of error and their possible effect on the equilibrium constant value in determination of equilibrium constant experiment.
The polystyrene coffee cup calorimeter is very good insulator.However, it still absorbs a small amount of heat if the system is above room temperature.How does this affect the specific heat of the metal sample?
A falling stone takes 0.28 s to travel past a window 2.2 m tall as shown in the figure on the right. From what height above the top of the window did the stone fall?
The first and second ionization constants of H2CO3 are 4.2×10-7 and 4.8×10-11. Calculate the concentrations of H+ ion, HCO3-, CO32- and undissociated H2CO3 in a 0.080 M H2CO3 solution.
New materials often lead to new technologies that change society. Describe how silicon-based semiconductors revolutionized computing.
The majority of cholesterol use in the body is for
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Following current events related to immigration reform, a group of students came to school wearing t-shirts representing national flags
A student notifies you that she has been subjected to bullying through a classmate's Facebook page. Write of 500 words in which you address the following:
Assignment Task: Technological advances have significantly enhanced the ability to efficiently collect and analyze evaluation data.
As you come to the close of your study of World Religions, it has become evident over the past two weeks that religions will continue to have a place
What do you believe about the purpose of classroom management? How will these beliefs influence the rules and expectations you set?
As educators, we are always trying to improve ourselves as well as our professional approach. One needs to reflect on our personal needs and areas of profession
What is the purpose of the flyer? What all services does your program offer for infants and toddlers? Who is your audience?