A solution in which 50 grams of solute is dissolved in 250 grams of solution has a concentration of blank percent.

How is compound different from a mixture? A. it is made of one substance B. it cannot be made of organic materials C. it cannot be broken down D. it cannot be separated by a physical change

Why can a cell not survive conditions of unlimited growth

How many moles of isooctane must be burned to produce 100 kJ of heat under standard state conditions? Show all of your work.

What is the correcr sum of Cl2+KBr=Br2+KCl

Diamonds are measured in carats, and 1 carat=0.200g. The density of diamond is 3.51g/cm^3. What is the volume of a 5.0-carat diamond?

A Gran plot for a potentiometric titration resulted in a slope of 5.56 x 105. Measurements were made using SCE as the reference electrode and the analyte Eo was determined to be 0.354 V.

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In which choice is the ellipsis used correctly to select from this sentence from The Scarlet Letter? A throng of bearded men, in sad-coloured garments and grey steeple-crowned hats, inter-mixed with women, some wearing hoods, and others bareheaded,

Explain the difference between the greenhouse effect and global warming.

How does adding salt affect the surface tension of water? if it increases surface tension, will it always increase it?