1. The radius of a hydrogen atom is 2.5 x 10^-11 m. Express this number in standard notation.
=0.000000000025
explanation?
=Since the exponent of the scientific notation is negative, move the decimal point-11 places to the left

2. The speed of light is 186,000 miles per second, or about 671,000,000 miles per hour. How would you express these numbers in scientific notation?
A=186,000 is equal to 1.86 x 10^5 -it reads- one, point, eighty six times ten raised to 5(positive)
B=671,000,000 is equal to 6.71 x 10^8 - it reads as- six point seventy one times ten raised to 8(positive)
explanation for A=Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the
10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive

same lng ng explanation ung sa A and B

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