How do I solve the following problem with the proper number of significant figures? Mainly parts E and

1222.5+6.24+3.88 Express your answer to the appropriate number of significant figures.

Please answer this question as fast as you can please and tahnk you. I will afterwards write an wonderful review on solving the question. Thank you. For each piece of glassware measure the density of water in triplicate (three times). Why repeat the procedure multiple times for each piece of glassware? Running the measurement in triplicate increases the precision of our results and reduces the impact of a single outlier result. The experiment would be too short if you only ran each trial once The first two trials act as practice, and the final trial will give you the true result. Running the measurement in triplicate increases the accuracy of our results and reduces the impact of a single outlier result.

An electric current of 22.90 A flows for 20.0 minutes. Calculate the amount of electric charge transported. Be sure your answer has the correct unit symbol and the correct number of significant digits.

For the image attached make a graph of the average mass vs year. Make sure axes are labeled