Answer:
Explanation:
1. Rounding
2 0<u>83 193</u> cm
You want to round to two significant figures.
You replace all the underlined digits (all those after the first two digits) with zeroes.
The rule is: If the first figure dropped (8) is greater than 5, increase the last figure kept (0) by 1.
Then, 2 0<u>83 193</u> cm becomes 2 100 000 cm
2. Converting to scientific notation
A number in scientific notation has the form
N × 10ⁿ
where N is a decimal number called the mantissa and n is an integer called the exponent.
We must have 1 ≤ N < 10
(a) Determine the mantissa
Move the decimal place to the left to create a new number between 1 and 10.
2 1<u>00 000</u> ⟶ 2.1<u>00 000</u>; N = 2.1
(b). Determine the exponent.
The exponent is the number of times you moved the decimal to get the mantissa.
You moved the decimal six places to the left, so the exponent n = 6.
(c). Write the number in scientific notation
Answer:
<h3>
<em>Water's extensive capability to dissolve a variety of molecules has earned it the designation of “universal solvent,” and it is this ability that makes water such an invaluable life-sustaining force. On a biological level, water's role as a solvent helps cells transport and use substances like oxygen or nutrients.</em></h3>
Explanation:
Stay safe, stay healthy and happy
Answer:
Substances 1 and 2
Explanation:
an element only has 1 kind of atoms :3
Argon is perticularly important for the metal industry, being used as an inert gas shield in arc