Take the least number of decimal places when adding or subtracting, therefore the answer is 17 to no decimal places.
If it was 14 x 3.078 the answer would be 43 to 2 significant figures. The rule for multiplication/division is to use the least number of sig figs in the components: 14 has 2 and 3.078 has 4 so the answer should use 2.
There are 5 significant figures, the six plus the four zeroes. The zeroes are significant figures due to the inclusion of the decimal - with no decimal there would only be one significant figure (the six).
18 + 52.1 is 70.1 there are 3 sig figs
The rules for identifying significant figures when writing or interpreting numbers are as follows: All non-zero digits are considered significant. For example, 91 has two significant figures (9 and 1), while 123.45 has five significant figures (1, 2, 3, 4 and 5). Zeros appearing anywhere between two non-zero digits are significant. Example: 101.1203 has seven significant figures: 1, 0, 1, 1, 2, 0 and 3. Leading zeros are not significant. For example, 0.00052 has two significant figures: 5 and 2. Trailing zeros in a number containing a decimal point are significant. For example, 12.2300 has six significant figures: 1, 2, 2, 3, 0 and 0. The number 0.000122300 still has only six significant figures (the zeros before the 1 are not significant). In addition, 120.00 has five significant figures since it has three trailing zeros.
It depends how many significant figures you are after. 23.1 + 2.06 = 25.16Significant figures is like rounding.If I were to round it to 3 sig. fig. I would have 25.2If I were to round it to 2 sig. fig. I would have 25and so on. You only keep the numbers which keep the number similar to the original yet less accurate with less digits.
4NH3 + 6NO -> 5N2 + 6H2O 145 g N2 x (1 mol/28.0 g) x (6 mol NO/5 mol N2) x (30.0 g NO/1 mol NO) = 186.4285714 g NO rounds to 186 g NO due to significant figures
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
The real answer is 33.443 but since 12 is the number with the least significant figures your answer will be 33
43.3
It has three.
3
2
4 of them.
5 of them.
Three significant figures.
There are 5 significant figures, the six plus the four zeroes. The zeroes are significant figures due to the inclusion of the decimal - with no decimal there would only be one significant figure (the six).
18 + 52.1 is 70.1 there are 3 sig figs
100 has one, 150 has 2, 250 has 2.