Wednesday
August 20, 2014

Posts by teagan


Total # Posts: 12

Science - chemistry
The osmotic pressure of a solution of MgCl2 is 5.43 atm at 25 oC. How much of the salt is dissolved in 250.0 ml of water?
June 8, 2014

Science - chemistry
The SO2 present in air is mainly responsible for the phenomenon of acid rain. The concentration of SO2 can be determined by titration against a permanganate solution of known concentration as follows: SO2 + MnO4^-1 -> SO4^-2 + Mn2+ (unbalanced) Balance the equation showing ...
June 8, 2014

Science - chemistry
Calculate the volume of 0.05 M NaOH which must be added to 100 cm3 of 0.05 M methanoic acid to obtain a buffer of pH 4.23. (Ka for methanoic acid = 1.77 x 10-4)
June 6, 2014

Science - chemistry
Calculate the pH of a solution prepared by adding 36 cm3 of 0.15 M methanoic acid to 27 cm3 of 0.20 M NaOH. (Ka for methanoic acid = 1.77 x 10-4)
June 6, 2014

Physics
An 80 kg man is put into a tank of water. When completely submerged he displaces 75 L of water. If fatty body tissue has an average density of 0.9 kg/L and non-fatty body tissue has an average density of 1.1 kg/L, what percentage of the man is composed of fat?
May 28, 2014

Physics
A jet engine produces a sound level of 150 dB from a distance of 30 m (assuming spherical dissipation). The average human ear has an effective area of 12.0 cm2. What is the sound level at 60 m from a jet engine is? What would the power intercepted by an unprotected ear at 60 m...
May 27, 2014

Precal
find the minor axis 1x^2+36y^2=1
November 29, 2013

Precal
Find all values of x such that x-6, x+6, and 10 x -6 form a geometric sequence. Give your answers in increasing order
November 29, 2013

Precal
Find x such that -8 x - 3, 3 x - 1, and 2 x + 49 are consecutive terms of an arithmetic sequence. x=?
November 29, 2013

science
what can an element's osition in the periodic tabletell you about it's relationship to other elements in the periodic table?
November 2, 2010

trig
Yea, but it isn't the entire circle so a circle area formula won't work. The equation for this area will be A= (1/2)r*Given Angle...
March 3, 2010

Analogy
Funnel: Tunnel :: (a. bridge b. sack c. ring d. framer) : Cave
January 30, 2008

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