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JulijaS [17]
3 years ago
8

Suppose that, from measurements in a microscope, you determine that a certain layer of graphene covers an area of 1.50μm2. Conve

rt this to square meters
Chemistry
2 answers:
dlinn [17]3 years ago
5 0

1.50 μm² = 1.50 x 10⁻¹²

<h3>Further explanation</h3>

<u>Given</u>

Area's cover is  1.50 μm²

Convert this area into m²

1 μm = 10⁻⁶  m²

to get the value of the conversion:

(1 μm)² = (10⁻⁶)² = 10⁻¹²

<h3>so 1.50  μm² = 1.50 x  10⁻¹²</h3>

<h3>Learn more</h3>

Unit conversion brainly.com/question/12571583

Conversion brainly.com/question/4771743

Keywords: unit conversion, micrometer, square, length, meter square

irga5000 [103]3 years ago
4 0
One \mu mis 10^{-6}m , hence one \mu m^2 is 10^{-12}m^2, thus 1.50\mu m^2 is 1.50\cdot10^{-12}\mu m^2
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Answer:-3463 kJ and -3452kJ

Explanation:

ΔU is the change in internal energy of a system and its formula is;

ΔU = q + w

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W represents the work done on or by the system. Its value is positive when work is done on the system and negative when it is done by the system.

For the system in this question, we see that it produces heat which means heat is transferred out of the system, therefore the value of q is negative, it can also be seen that work is done by the system which means that w is also negative.

Therefore,

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ΔU = -3452 kJ – 11kJ

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By product rule Δ(PV) becomes ΔPV + PΔV

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At 25 °c, what is the hydroxide ion concentration, [oh–], in an aqueous solution with a hydrogen ion concentration of [h ] = 3.0
chubhunter [2.5K]

As,

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