24 has 2 sig figs.
To determine the number of significant figures in the product of 2.8 and 10.5, we look at the number of significant figures in each number. The number 2.8 has 2 significant figures, and 10.5 has 3 significant figures. When multiplying, the result should be reported with the same number of significant figures as the factor with the least significant figures, which is 2. Therefore, the product of 2.8 x 10.5 should be expressed with 2 significant figures.
The number 1.84 x 103 has three significant figures, 1.84. The 103 part of the number does not count when determining significant figures.
There are 2 significant figures in 7.8x109^?
In both cases, there are 2 significant figures.
Significant figures are very important when it comes to calculations. If the mass of an electron is 9.10939 x 10-31 then its significant figures are: 9 x 10^-31( correct 1 significant figure), 9.1 x 10^-31 kg ( correct to 2 significant figures), 9.11 x 10^-31 (correct to 3 significant figures), and 9.109 x 10^-31 (correct to 4 significant figures).
5.0 x 10^2
The product is 67.30879 which contains 7 significant figures
The number 4.0 X 10^-2 has two significant figures. The "4" is a non-zero digit and is always significant, while the "0" after the decimal point is significant because it indicates precision in the measurement. The scientific notation does not affect the count of significant figures.
5.2 x 10^4
The significant figures for 0.054 are 2. In a decimal number, leading zeros are not considered significant. Therefore, the significant figures in 0.054 are the digits 5 and 4. The zeros after the decimal point are considered significant.
350, or 3.5 x 10^2.
300 only has one significant digit.