chemistry
A 100 g sample of a liquid with a specific heat of 2 J/g · C absorbs 4000 J of heat energy. If the sample started at 30 ◦ C , what is the final temperature? No phase change took place.
chemistry
Step 1: (0.5*8180.0 - 8180.0)/ (390.5 - 8180.0)= erf(ξ) Step 2: erf(ξ < 0.6), use the approximation erf ξ = ξ Step 3: t= d^2/4*D*ξ^2 d=96.5 x 10-2 cm D=3.091 x 10-7 cm2/s Step 4: t in sec -> hours Conversion seconds to hours is total/(60x60)
chemistry
I got the right answer :)
chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 390.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.53 kg m-3. Under these conditions the total surface area of the balloon is 0.2 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of he...
Chemistry
IV)Wrong !Neither will work, UV light will be able to pass through both of them if visible light is able to pass through as well.
I really need help in science please anyone thanks
Since fermentation occurs in the cytoplasm of yeast cells explain the role of mitochondria in yeast cells ? If anyone can help me this I will truly be graceful
science
1.75 cm that is the correct one
Physics--please please i need help!
A Ladder of length L and mass m leans against wall at angle theta from the vertical. The wall is smooth so that only horizontal force N is exerted on the top of the ladder. A fireman of mass M climbs a distance d upward as measured along the ladder. (a): Assuming the ladder st...
Physics
A Ladder of length L and mass m leans against wall at angle theta from the vertical. The wall is smooth so that only horizontal force N is exerted on the top of the ladder. A fireman of mass M climbs a distance d upward as measured along the ladder. (a): Assuming the ladder st...
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