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
(a) What is the frequency of the alternating current? (b) Determine the resistance of the bulb's filament. (c) What is the average power delivered to the light bulb?
In the adjoining bike lane, a cyclist speeds up from rest to 24.0 mi/h with constant acceleration 12.00 mi/h-s. Each vehicle maintains constant velocity after reaching its cruising speed. (a) For what time interval is the bicycle ahead of the car?
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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