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An electron, initially at rest, is placed in a region of space with a potential difference of 1250 V. What is the electron's final velocity as it exits this space?
Calculate the pH of a solution that is formed when 25.0 mL of 0.24 M ammonia (Kb = 1.8 x 10-5) is mixed with 25.0 mL of 0.20 M ammonium chloride.
a. What is the value of infix expression 5 + (4 - 2 * 3 ) * 5 + 6 ? b. Show step by step (draw it out) to change the above infix expression to postfix expression using a Stack, you need to show the contents of stack and Output
Some bacteria are able to harvest infrared light of ? ~ 1000 nm. What is the maximum number of 1000 nm photons needed to form one ATP from ADP and Pi
A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36mg.
How much work is done in kilojoules when the volume of a cylinder goes from 2L to 3L and stays at 2.5 atm? Are the surroundings doing work on the system or system doing work
Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00 M solutions of their ions.
25.00 mL of a solution containing 0.1263 M Br- is titrated with 0.1000 M Ag(NO3). Determine pAg and pBr (a) 5.00 ml prior to the equivalence point (b) at the equivalence point (c) 5.00 mL past the equivalence point.
Magnesium hydroxide is 54.87% oxygen by mass. How much oxygen is in 114 g of the compound?
if a student have a soil with buffer ph of 6.7 and ph of 5.8 then determine how much dolomitic limeis an anhydrous
Calculate the OH concentration of a solution of Na2CrO4 0.225M. (the sodium salt of chromic acid). (Chromic acid is H2CrO4, a diprotic acid, Ka1= 1.80x10^-1, Ka2=3.20x10^-7 & Kw=1.00x10^-14).
a sample of hfrac12o with a mass of 46.0 grams has a temperature of -58.0 agravec. how many joules of energy are
The density of air at ordinary atmospheric pressure and 25 degrees C is 1.19 g/L. What is the mass, in kilograms, of the air in a room that measures 10.0 X 13.5 X 10ft
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