What are empirical and molecular formulas of ethylene glycol
Ethylene glycol is used as automobile antifreeze. 6.38 g of this compound contains 2.47 g of carbon and 0.620 g of hydrogen. The rest is oxygen. The molar mass is 62.0g/mole. What are the empirical and molecular formulas of ethylene glycol?
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An 84-O resistor and a 74-O resistor are connected in series across a battery. The voltage across the 84-O resistor is 34 V. What is the voltage across the 74-O resistor?
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Ethylene glycol is used as automobile antifreeze. 6.38 g of this compound contains 2.47 g of carbon and 0.620 g of hydrogen. The rest is oxygen. The molar mass is 62.0g/mole.
Urn 1 contains 5 red, 4 white, and 6 blue marbles. Urn 2 contains 12, red, 2 white, and 3 blue marbles. One urn is chosen at random and then one marble is drawn at random from that urn. Find the probability that
Assuming all the initial kinetic energy is converted to heat energy and all this energy stays in the block, what is the final temperature?
The common Eastern mole, a mammal, typically has a mass of 69 g, which corresponds to about 6.9 moles of atoms. (A mole of atoms is 6.02 x 1023 atoms. In atomic mass units (u), what is the average mass of atoms in the common Eastern mole?
Only two horizontal forces act on a 3.0 kg body that can move over a frictionless floor. One force is 9.0 N due east, and the other is 8.0 N, acting 62° north of west. What is the magnitude of the body's acceleration?
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