When you are doing addition and subtraction, my chemistry text tells me to round to the least number of decimal places. It also tells me when rounding to use the rule that if its 5 or more, to round up.I have a problem that tells me to solve 0.881+132.1-12.02. The full answer I get is 120.961.Since I need at least one decimal place, should I keep it as 120.9 or round up to 121.0?

Using the data below (included for context), what is the equation for the trendline for the data points that fall in the linear range  (linear range was found to be timepoints 1 min to 4 min,)? Your answer should be in the form of y = mx + b. Make sure that your trendline only includes the data points that fall in the linear range. In order to determine the trendline using Excel, you may need to create a new graph that only includes the earlier data points. With your new trendline, what is the initial velocity when 1 nM OXA-M290 is mixed with 60 μM nitrocefin? Make sure to include units in your answer. Context: DO NOT ANSWER Concentration of hydrolyzed nitrocefin at 20 time points. Graph attached below Time (min)  Concentration (μM)  0.5  6.01  1  11.78  1.5  17.6  2  23.51  2.5  29.58  3  35.31  3.5  39.73  4  44.5  4.5  48.18  5  50.05  5.5  52.72  6  54.01  6.5  55.06  7  55.65  7.5…

11.004g + 3.08g x 112.96g= I don't understand how to start this problem when there is not parantheses and how the significant figures rules apply when there is addition and multiplication in the same problem. I got 1591.03 as a final answer but I think that is incorrect.

what is x = ? 2. How many significant figures are there in the experimental number:  33.7

a students was measuring the ratio of a circles circumference qnd diameter they found the circumference to be 6.28cm and the diameter to be 1.8cm. the actual ratio (circumference divided by diamter) was 3.14 what was their percent error?

Please answer question number 2  correctly with the correct answer. there is a picture of an example of a ''Dimensional analysis Format' below. please write out all work showing the math in dimensional analysis format. (please show all work)   question 2: What is the mass of 1.00 mol of Oxygen (O2)?

Which area is greater than 100 ft?? (yes, that means converting all of them to feet in order to know which answer is correct.) A) an 8 ft. × 8 ft. square B) a rectangle with an area of 1.02 × 106 mm2 C) a circle with a radius of 156.7 cm D) a circle with an area of 2.54 × 10-5 km²

Which of the following are CORRECT regarding significant figures? In your answer, please list the numbers designating statements that are CORRECT. 1) when multiplying or dividing numbers, the result only has as many significant figures as the factor with the fewest significant figures- the purpose of significant figures is to indicate accuracy of a measured quantity 2) when adding or subtracting numbers, the result only has as many significant figures as the factor with the fewest significant figures 3) when adding or subtracting numbers, the result only has as many decimal places as that of the factor with the fewest decimal places 4) the purpose of significant figures is to indicate the precision of a measured quantity 5) countable quantities impact the number of significant figures in a calculation 6) when multiplying or dividing numbers, the result only has as many decimal places as that of the factor with the fewest decimal places

Make the following calculation and report your answer to the correct number of significant figures running to the result, if necessary.  (4.566+ 6.2192)/ 88.92

Compute 3.5 x 4.48697. Round the answer appropriately. Express your answer numerically using the proper number of significant figures. • View Available Hint(s) 3.5 x 4.48697 =