A lab assistant is reading the scientist's notes and reads 2.7 × 10 - 4 grams.

Question

How many grams is this?

2,700 grams
0.00027 grams
27,000 grams
0.0027 grams

Answer 1

To convert the scientific notation \(2.7 \times 10^{-4}\) grams to standard notation, you move the decimal point 4 places to the left (because of the negative exponent).

Starting with 2.7:

• Move the decimal left 1 place: 0.27
• Move the decimal left 2 places: 0.027
• Move the decimal left 3 places: 0.0027
• Move the decimal left 4 places: 0.00027

So, \(2.7 \times 10^{-4}\) grams is equal to 0.00027 grams.

The correct answer is 0.00027 grams.