Express each of the following numbers in scientific notation with correct significant figures (5 marks)(a) 711.0(b) 90743(c) 0.05499(d) 10000.0(e) 0.000000738592Answers: 1) a) 7.110 102 b) 9.0743 104 c) 5.499 10-2 d) 1.00000 104 e) 7.38592 10-7 2. Indicate the SI base units or derived units that are appropriate for the following measurements (5 marks)(a) the mass of the moon (b) the speed of sound(c) the density of air(d) the temperature at which alcohol boils (e) the volume of a flu shot or a measles vaccinationAnswer:a) The SI base unit for mass is the kilogram (kg). (b) The SI derived unit for speed is meters per second (m/s). (c) The SI base unit for density is kilogram per cubic meter (kg/m^3). (d) The SI base unit for temperature is the kelvin (K). However, this can also be measured in degrees Celsius (C) or degrees Fahrenheit (F).(e) The SI base unit for volume is cubic meter (m^3). However, typically volume of liquid is measured in milliliters (mL) or microliters (?L)Since the dimensions for the problem in question are so small, we must use lower dimensions like millimetres and micrometres; yet, because the SI base units must be specified, I have already mentioned this.3. Perform the following calculations and report each answer with the correct number of significant figures (5 marks)(a) 628 342 (b) (5.63 102) (7.4 103)(c) 28.0/13.483(d) 8119 0.000023(e) 14.98 + 27,340 + 84.7593Answer:a) 215000 b) 4.2 106c) 2.08 d) 0.19 e) 27440 Please verify if all the answers are correct and if there is anything wrong please the answer to it and as for question 4 let me know if anything is unclear to see and need a resend. Thank you so much for helping me!

Science: Past, Present, and Future 4. An experiment requires you to make several measurements. The true value is 0.2135. Based on the values in the table below, describe the precision and accuracy of each Trial (5 marks). (e.g. Trial F = Accurate but Not precise etc.) Trial A Trial B Trial C Trial D Trial E 0.2139 0.2893 0.2088 0.3214 0.2135 0.2130 0.3210 0.2133 0.3222 0.2134 0.2133 0.2999 0.2136 0.3234 0.3712 0.2135 0.2998 0.2095 0.3232 0.3715 0.2134 0.3025 0.2113 0.32255 0.2924 The last cell is the average for each trial to determine the accuracy. Trial A: Accurate and Precise Trial B: Not Accurate and Less Precise Trial C: Accurate and Less Precise Trial D: Not Accurate and Precise Trial E: Not Accurate but Less Precise The difference between precise and accurate. Volume (ML) of Cough Medicine Delivered by 10-oz (296 ML) Dispensers . A measurement is said to be precise if it yields very similar results when repeated in the Dispenser #1 Dispenser # 2 Dispenser # 3 same manner. 283.3 290.3 296.1 284.1 294.2 295.9 . A measurement is considered 283.9 296.0 296.1 accurate if it yields a 284.0 297.8 296.0 284.1 203.9 296.1 result that is very close to the true or accepted value. . Dispenser #1 is precise, but not accurate. . Dispenser #2 is more accurate, but less precise. Dispenser #3 is both accurate and precise. This is one is an example