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?
At that point its engines fail, and the rocket goes into free fall, with an acceleration of -9.80 m/s2. (You will need to consider the motion while the engine is operating separate from the free-fall motion.) (a) How long is the rocket in motion a
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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.
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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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