geometry
im still not sure on how to do this
geometry
Shalonda notices that when she stands next to the flagpole, she casts a shadow that is 8 feet long and that the flagpole casts a shadow that is 28 feet long. Little Shalonda is 4 feet tall. How tall, to the nearest foot, is the flagpole?
reading
Renee has a research paper due in three days. She has set aside two hours to complete this task. What is wrong with this study goal? A. It is not significant and can’t be rewarded. B. The goal is not concrete and specific. C. The time she has allotted is not realistic. D....
Chemistry
One reaction of iron with hydrochloric acid is represented by the following thermochemical equation. Fe(s) + 2HCl(aq) ? FeCl2(aq) + H2(g); (Delta)H°= –87.9 kJ How much heat is liberated at constant pressure if 0.215 g of iron reacts with 40.4 mL of 0.579 M HCl? How mu...
Chemistry
2M +6HCl–>2MCl+3H2 Delta H= -638.0 Kj HClg—>HCl aq= Delta H -74.8 Kj H2+Cl2–>2HCl Delta H -1845.0 Kj MCl3s–> MCl3 aq Delta H -249.0 Kj Use the information above to determine the enthalpy of the following reaction. 2M +3Cl2–>2MCl3 Delta H...
Chemistry
kj/C not cal/g that's another question I'm working on
Chemistry
At constant volume the heat of combustion of a particular compound is -3378.0 kj/mol.When 1.563 g of this compound ( molar mass of 126.88 g/mol )was burned temp rose 6.991 C. What's the heat capacity of the calorimeter(calorimeter is constant)? Sorry the answer needs to be...
Chemistry
At constant volume the heat of combustion of a particular compound is -3378.0 kj/mol.When 1.563 g of this compound ( molar mass of 126.88 g/mol )was burned temp rose 6.991 C. What's the heat capacity of the calorimeter(calorimeter is constant)?
Chemistry
A 0.464 gram sample of a metal, M, reacts completely with sulfuric acid according to: M(s) +H2SO4(aq)=MSO4(aq)+H2(g) A volume of 211 mL of hydrogen is collected over water; the water level in the collecting vessel is the same as the outside level. Atmospheric pressure is 756.0...
Calculus
At what value of x does the graph of y=9x^(1/3)+x^2 have a point of inflection?
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