To estimate the number of human cells in a newborn baby, we need to divide the mass of a newborn baby by the mass of a single human cell.
Given that the mass of a human cell is approximately 2.7 × 10^(-11) grams, we'll need to know the mass of a newborn baby. However, without that information, it's challenging to provide an accurate estimate. The number of cells in a newborn baby can vary significantly based on factors such as birth weight and individual variability.
If we assume an average newborn weight of around 3.5 kilograms (3500 grams), we can set up the following calculation:
Number of cells = Mass of newborn baby / Mass of a single cell
Number of cells ≈ 3500 grams / (2.7 × 10^(-11) grams)
Calculating this, we get:
Number of cells ≈ 1.296 × 10^14
Therefore, an estimate of the number of human cells in a newborn baby would be approximately 1.3 × 10^14, expressed in standard form with two significant figures.