The total area that could be covered by this roll of tape is 0.1524 m².
<h3>What is the double-sided tape?</h3>
A double-sided tape is a tape that can be stick from both sides. It is used to stick something on a surface. A rectangle is an object that has four sides in which two sides are equal.
If we unroll the tape, we will see that it is a rectangle with dimensions:
length = 6.35 m
width = 1.2 x 10⁻² m
Since the tape has two sides, the total area of the tape is:
A = 2 x (length x width)
A = 2 x 6.35 x 1.2 x 10⁻²
A = 0.1524 m²
Thus, the total area of the tape is 0.1524 m²
To learn more about the area of rectangle, refer to the link:
brainly.com/question/8663941
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c cell wall human cells do not have cell walls but do have cell membranes unlike plants that have both
Answer:
1.07×10²¹ molecules are needed to sound the alarm
Explanation:
Let's convert the mass of CO to moles, to determine the amount of molecules.
0.05 g . 1 mol / 28 g = 1.78×10⁻³ moles
Now we can determine the number of molecules with the NA
1 mol has 6.02×10²³ molecules
1.78×10⁻³ moles may have (1.78×10⁻³ . 6.02×10²³) / 1 = 1.07×10²¹ molecules
Sodium Phosphide has a formula of Na3P . In order to bond ionically the charges must be equal and opposite. It will take one -3 phosphide ion to balance three +1 sodium ions forming a magnesium phosphide molecule of Na3P