Worksheet 1 Intro to Chemical Calculations, Fall 2023, (August 22)

Round to correct amount of significant figures please. Thank you!

(number 15, for the second picture)

A. Type the number 1340000 in scientific notation. B. Type the number 0.000354 in scientific notation. C. Type the number 3.14×103 in standard notation.

8 cm3 = __________ L Group of answer choices .0227 22.7 57800 .0578

A. Rounding Off A.1 Rounding A student rounded off the following calculator displays to three significant figures. Indicate if the rounded number is correct. If it is incorrect, round off the display value properly. Calculator Student's Correct (yes/no). Corrected (if needed) Display Rounded Value 24.4704 24.5 143.63212 144 532 800 530 0.00858345 0.009 8. 8.00 17

Complete the following using significant digits rules. Report your answers using the correct number of significant digits. A.) 0.368 + 12.24 - 6.742 B.) (30.86) x (15.667) x (0.28) C.) (1600 ÷ 2.24) + 1.185 D.) (1260 + 42.35) ÷ 6

Part B.1: Measuring the volume of a sample of water. Measuring Device Beaker Graduated Cylinder Measured Value 41 mL 38.0 mL Number of Significant Figures | Which measuring device is more precise? The beaker or the graduated cylinder? [ans]

File Tools View Document1 Saved to this PC 1. What system do scientists use for making measurements? 2. What is the basic unit of length? 3. The conversion between basic units and derived units in the metric system are based on a factor of 4. In the metric system, what is the meaning of "centi-"? 5. In the metric system, what is the meaning of "kilo-"? 6. a. To convert meters to millimeters b. To convert meters to kilometers 7. What is the basic unit of mass? 8. What is the basic unit of volume? 9. To read the volume of liquid, look at the bottom of the 10. a. What are the basic scales of temperature in the metric system? b. Which is used in climate study and industry? Screens 1-2 of 2 87°F Mostly cloudy by by I Q Search c. Which is used in scientific research? 11. What is the algebraic equation used to convert Celsius to Fahrenheit and vice versa? 12. What are the boiling point and freezing point of water on the Celsius scale? O 13. What are the boiling point and freezing point of…

For the image attached Make a graph of the average mass vs year. Please label y and x axes

Complete the following addition and subtraction problems in scientific notation.a. (6.23 × 1 0 6 kL) + (5.34 × 1 0 6 kL)b. (3.1 × 1 0 4 mm) + (4.87 × 1 0 5 mm)c. (7.21 × 1 0 3 mg) + (43.8 × 1 0 2 mg)d. (9.15 × 1 0 -4 cm) + (3.48 × 1 0 -4 cm)e. (4.68 × 1 0 -5 cg) + (3.5 × 1 0 -6 cg)f. (3.57 × 1 0 2 mL) - (1.43 × 1 0 2 mL)g. (9.87 × 1 0 4 g) - (6.2 × 1 0 3 g)h. (7.52 × 1 0 5 kg) - (5.43 × 1 0 5 kg)i. (6.48 × 1 0 -3 mm) - (2.81 × 1 0 -3 mm)j. (5.72 × 1 0 -4 dg) - (2.3 × 1 0 -5 dg)

Is this calculation correct? See image below. ...

I need help with these question please

That's my question :)

Please help with #5

Calculate density of a metal an unknown metal

8. A student determines the density of a substance to be 1400 g/L. What is the % error if the accepted value of the density is 0.001360 kg/mL 2.9 0.029 -2.9 -0.029

Make a graph of the average mass vs. year. Make sure axes are labeled. Please please answer super fast please answer as fast as possible

Measure the length of the crayon with correct precision and units

Jack measured the mass of an empty evaporating dish and watch glass, and weighed approximately 0.5 g of an unknown solid into the evaporating dish.  He then followed the procedure for Lab Exercise 5, and collected the rest of the data in the table below.  Please note that row letters correspond to those found on the data sheet that you will use in lab.  A Mass of empty evaporating dish + watch glass 65.362 g B Mass of dish + watch glass + initial solid 65.864 g C Mass of dish + watch glass + carbonate 65.705 g D Mass of dish + watch glass + chloride 65.716 g  What was the mass (in grams) of the unknown solid that Jack used in his experiment. Report your answer to the correct number of significant figures.

How do I solve this question? The answer has to be in scientific notation and rounded to the appropriate number of significant figures.  b.) 5.78 * 10-3 - 7.98 * 10-5

Please help with #3

Solve correctly please. Should correct.

Please help with 7&8

Chapter 1 Item 10 Use appropriate metric prefixes to write the following measurements without use of exponents. 2.3 x 10-10 L O 0.23 µL 2.3 nL 23 ML 0.023 nL 2.3 µL 0.23 nL Submit Request Answer P Pearson Privacy Po Copyright O 2020 Pearson Education Inc. All rights reserved. | Terms of Use 719% Learch F2 F3 F6 F4 F5 F7 F11 F9 F8 F10 24 & 3 * 00

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Solve using dimensional analysis. Report answer to proper number of significant figures. pls provide full solution so I can study

Please using converter paper i attached to explain the example.

Use water displacement method: measure to the 10ths place!

Use calculator to solve the problems. Write your answer in scientific notation with correct number of sig fig. Enter numbers only, no units. Enter scientific notation as (number)E(exponent) for example: enter 2 x 104 as 2E-4 (note there are no spaces) 9.4 x 10-6 mol 4.5 x 103 L

When reading off of a calibrated instrument or glassware, the last digit reported is always an estimation. This estimation introduces error to your data. systematic O random

Unless otherwise informed, report all answers in standard notation to 3 significant figures.