Friday
April 18, 2014

Posts by Jarred


Total # Posts: 17

Chemistry
Water does not easily remove grease from dirty hands because grease is nonpolar and water is polar; therefore they are immiscible. The addition of soap, however, results in the removal of the grease. Examine the following structure of soap and explain why soap works. O || CH3(...

Chemistry
Lakes that have been acidified by acid rain can be neutralized by the addition of limestone how much limestone in kilograms would be required to completely neutralize a 5.2 x 10^7 -L lake containing 5.0 x 10^(-3) g of H2SO4 per liter.

Chemistry
To balance the oxygen and hydrogen for a redox reaction that takes place in acidic solution, it is necessary to use which of the following?A. H2O and H+ B. H2O only C. H2O and OH- D. OH- only

Chemistry
When an ionic compound dissolves in water, splitting into its respective ions, the positive ions will be attracted to the _________ end of the water molecule. A. neutral B. partially positive C. partially negative

Chemistry
total ionic equation for the reaction between hydrochloric acid and potassium hydroxide?KI(aq)A. K+ + I- B. K2+ + I2- C. K+(aq) + I-(aq) D. K2+(aq) + I2-(aq)

Chemistry
When given the pressure and force of a system, how should the pressure formula be rearranged to solve for area?

Chemistry
Gas particles are not found in which layer of Earth's atmosphere? A. exosphere B. mesosphere C. thermosphere D. magnetosphere I know it's not A.

Chemistry
Calculate the number of grams of water produced from 30 g of oxygen gas. List only the number of grams of water. First, you will need to balance the equation above. Round to the nearest hundredth. And, as always, don't forget the units.C6H10+O2---->CO2+H2O

Chemistry
What are the coefficent balance of this chemical equation H2SO4+NaNO2---->NHO2+Na2SO4?

Chemistry
If you start with ten grams of lithium hydroxide, how many grams of lithium bromide will be produced? Round to the nearest tenth. Don't forget the units.LiOH+HBr--->LiBr+H2O

Chemistry
C3H8+5O2---->3CO2+4H2O

Chemistry
If 5.0 moles of propane react, how many molecules of water will be formed? A.3.0x10.24 B.4.8x10.24 c.1.2x10.25

Chemistry
It should be 2HCl+Na2SO4--->2NaCl+H2SO4

Chemistry
2HCl+Na2SO4--->2NaCl+H2O, If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced? Round to the nearest tenth. Don't forget the units

Calculus
This is my first calculus class and I am lost on how to answer these. The book isn't giving me a clear explanation for help. Any help someone could provide would be great! 1. Use a reference triangle to find the given angle. cos -1 (1/2) give an exact answer in terms of pi...

Calculus
There is 1 error in the above answer. 11dy/dt = 6 dx/dt is true dx/dt = 6 is also true but dy/dt is not 6/11 ft/sec the 6 must be multiplied by the 6 from dx/dt giving dy/dt = 36/11

Geomertry
A = 1/2 h (b1 + b2) A = 201km square h = 17km b2 = 16km what is b1? My answer paper gives it as 7.65km but I cannot see how you get there

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