Mathematics for Chemistry - II

How many ng are there in 5.2 mg?

• 5.2 x 10^-6 ng

• 5.2 x 10⁶ ng

• 52 x 10⁶ ng

• 0.52 x 10⁶ ng

How many millimeters are there in 4.3 kilometers?

• 4.3 x 10^-6 mm

• 43 x 10⁶ mm

• 4.3 x 10⁶ mm

• 4.3 x 10⁵ mm

4.18 x 10⁶ centimeters to kilometers

• 4.18 x 10² Km

• 4.18 x 10^-5 Km

• 4.18 x 10^-1 Km

• 4.18 x 10¹ Km

45.0 micrograms to nanograms

• 4.5 x 10³ ng

• 4.5 x 10⁴ ng

• 45 x 10⁴ ng

• 4.5 x 10^-4 ng

5000 cm³ to ml

• 500 ml

• 0.005 ml

• 0.0005 ml

• 5000 ml

5000 cm³ to dm³

• 50 dm³

• 0.5 dm³

• 500 dm³

• 5.0 dm³

4 m³ to cm³

• 4.0 x 10^-6 cm³

• 4.0 x 10⁶ cm³

• 40 x 10⁶ cm³

• 0.4 x 10⁶ cm³

4 m³ to dm³

• 4000 dm³

• 40 dm³

• 400 dm³

• 4 dm³

0.125 dm³ to cm³

• 12.5 cm³

• 1.25 cm³

• 125 cm³

• 1250 cm³

What is the answer when (2.1 x 10⁴) (4.0 x 10^-2)?

• 8.4 x 10²

• 8.4 x 10^-2

• 8.4

• 84 x 10^-2