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- An electric current of 21.50 A flows for 21.0 minutes. Calculate the amount of electric charge transported.. Be sure your answer has the correct unit symbol and 3 significant digits. 7 x10 •O U 89 SAn electric current of 481.0 mA transports 530. uC of charge. Calculate the time this took. Be sure your answer has the correct unit symbol and 3 significant digits. 0 x10 X H 8 SAn electric current of 155.0 mA flows for 42.0 minutes. Calculate the amount of electric charge transported.. Be sure your answer has the correct unit symbol and 3 significant digits. 0 x10 μ 0 9 X
- An electric current of 485.0 mA transports 760. uC of charge. Calculate the time this took. Be sure your answer has the correct unit symbol and 3 significant digits. x10 ロ・ロ X μ 3 5An electric current of 22.90 A flows for 20.0 minutes. Calculate the amount of electric charge transported. Be sure your answer has the correct unit symbol and the correct number of significant digits.How many grams F in 650.1 g Br,F,? Put the answer in the box in regular (non-scientific) notation. Use one figure past the decimal.
- I am told that when determining the number of significant figures, if the decimal place is absent, then you start counting from the first nonzero number on the right side and continue counting to the left until you reach the last digit. However, if the decimal place is present, start counting the first nonzero number from the left and continue counting to the right until the final digit has been reached. For example, the number 50 only has two significant figures, while the number 50.00 has four significant figures. However, how does the number 50 have two significant figures? If I have to start countingfrom the right because of the absence of a decimal place, and I have to begin with the first non zero number, I would have to start from 5 and there is nowhere to count further to the left. How does the number 50 have two significant figures?An electric current of 132.0 mA transports 80.0 C of charge. Calculate the time this took. Be sure your answer has the correct unit symbol and 3 significant digits. x10 ロ・ロ・ X H 010 ŚCalculate the number of hydrogen atoms in a 150.0 g sample of ammonia (NH,). Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.
- The radius of an atom of gold (Au) is about 1.35 Å. Part A: Express this distance in nanometers (nm). Express your answer using three significant figures. Part B: Express this distance in picometers (pm). Express your answer using three significant figures. Part C: How many gold atoms would have to be lined up to span 9.5 mm? Express your answer using two significant figures. Part D: If the atom is assumed to be a sphere, what is the volume in cm3 of a single Au atom? Express your answer using three significant figures.An electric current of 304.0 mA transports 1.00 kC of charge. Calculate the time this took. Be sure your answer has the correct unit symbol and 3 significant digits. 0 x10 ロ・ロ･ X 3 5An electric current of 52.0 mA flows for 6,0 seconds. Calculate the amount of electric charge transported. Be sure your answer has the correct unit symbol and 2 significant digits. 0 x10 0.0 X 00 S