[.. الظل ..]

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الشابتر الأول ..~

The diameter of an atom is approximately 1 × 10^-7 mm. What is this diameter when expressed in nanometers?

A.1 × 10^-18 nm
B.1 × 10^-15 nm
C.1 ×10^-9 nm
D.1 × 10^-1 nm

شلون طلعتْ هالأجابة :""(

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6.0km is how many micrometers

A.6.0 × 10^6 µm
B.1.7 × 10^-7 µm
C.6.0 × 10^9 µm
D.1.7 × 10^-4 µm

حليتها و طلعت الأولى .. ليه طلعت الإجابة c

*/

Which of these quantities represents the largest mass?

A.2.0 ×10^2 mg
B.0.0010 kg
C.1.0 × 10^5 g
D.2.0 × 10^2 cg

ما عرفتْ لها ... ^__^

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آخذ نفس و راجعة :")