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Class Assignment 1. Express the following numbers in scientific notation. (8 Points) a) 0.0002345 b) 2345 c) 10023 d) 10.234

Class Assignment 1. Express the following numbers in scientific notation. (8 Points) a) 0.0002345 b) 2345 c) 10023 d) 10.234

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Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Class Assignment b) BF3 c) SeO2 1. Express the following numbers in scientific notation. (8 Points) d) CH4 a) 0.0002345 e) 03 b) 2345 c) 10023 f) CHCI3 g) NH, h) NO: d) 10.234 2. Do the following calculation and express your answer in correct significant figures. (8 Points) a) 12.023 + 5.4555 + 9.25 10. Do the following unit conversions (16 points) b) 4.56 x 1.25 (1 Inch = 2.54 cm, 1lb = 454 g) c) 9.86 - 8.8 a) 25 cm = .Inches d) 8.00 / 2.0 b) 2.54 m = . .mm 3. Find the volume of a sphere if its radius is 5.5 cm. (4 Points) c) 25 °C = OF 4. List the name of two laboratory equipment we can use to measure the volume of liquid? (4 d) 122 K = °C e) 2.2 Ib = .Kg Points) If a metal block was 5.0 cm long, 4.00 cm wide and 2.00 cm high, and has a mass of 357.6 g, find 5. f) 3.2 liter = ..cm3 the density of metal block. Use the table on page 34 in your lab manual to identify the metal. (8 g) 12.2 mg = Points) h) 350 K = °F 6. If a sugar solution was found to have the density of 1.30 g / ml, what will be the mass of 5 ml of 11. In a lab experiment KI was synthesized by decomposition of KIO3. How many grams of KI will be produced this solution? (4 Points) 7. Write the formula of following compound (16 Points) by 0.1662 g of KIO3. Find the percent yield if actual yield of KI was 0.1125 g. 12. In a titration experiment, 17.5 ml of 0.15 M NaOH solution was needed to reach end point with 25.0 ml HCI a) Formed by Na* and PO4³ions solution. Find the molarity of HCI solution. b) Formed by Fe* and 0? 13. Find pH of the solution if c) Formed by Aluminum and Sulfate ions a) H+ = 0.000025 b) OH- = 0.000025 с) РОН - 3.21 d) Formed by Ammonium and hydroxide ion e) Formed by magnesium ion and sulfide ion f) Sulfur Hexa fluoride g) Diphosphorous Pentoxide h) Nitrogen monoxide 8. Write the name of following compounds (16 Points) a) N2Os b) Cо c) Feo d) OCI2 e) MgCl2 f) CuCl2 g) Ca(NO3)2 h) NaOH 9. Make Lewis structure, predict the molecular geometry and polarity of the following molecules. (16 Points) a) NCI3
Transcribed Image Text:Class Assignment b) BF3 c) SeO2 1. Express the following numbers in scientific notation. (8 Points) d) CH4 a) 0.0002345 e) 03 b) 2345 c) 10023 f) CHCI3 g) NH, h) NO: d) 10.234 2. Do the following calculation and express your answer in correct significant figures. (8 Points) a) 12.023 + 5.4555 + 9.25 10. Do the following unit conversions (16 points) b) 4.56 x 1.25 (1 Inch = 2.54 cm, 1lb = 454 g) c) 9.86 - 8.8 a) 25 cm = .Inches d) 8.00 / 2.0 b) 2.54 m = . .mm 3. Find the volume of a sphere if its radius is 5.5 cm. (4 Points) c) 25 °C = OF 4. List the name of two laboratory equipment we can use to measure the volume of liquid? (4 d) 122 K = °C e) 2.2 Ib = .Kg Points) If a metal block was 5.0 cm long, 4.00 cm wide and 2.00 cm high, and has a mass of 357.6 g, find 5. f) 3.2 liter = ..cm3 the density of metal block. Use the table on page 34 in your lab manual to identify the metal. (8 g) 12.2 mg = Points) h) 350 K = °F 6. If a sugar solution was found to have the density of 1.30 g / ml, what will be the mass of 5 ml of 11. In a lab experiment KI was synthesized by decomposition of KIO3. How many grams of KI will be produced this solution? (4 Points) 7. Write the formula of following compound (16 Points) by 0.1662 g of KIO3. Find the percent yield if actual yield of KI was 0.1125 g. 12. In a titration experiment, 17.5 ml of 0.15 M NaOH solution was needed to reach end point with 25.0 ml HCI a) Formed by Na* and PO4³ions solution. Find the molarity of HCI solution. b) Formed by Fe* and 0? 13. Find pH of the solution if c) Formed by Aluminum and Sulfate ions a) H+ = 0.000025 b) OH- = 0.000025 с) РОН - 3.21 d) Formed by Ammonium and hydroxide ion e) Formed by magnesium ion and sulfide ion f) Sulfur Hexa fluoride g) Diphosphorous Pentoxide h) Nitrogen monoxide 8. Write the name of following compounds (16 Points) a) N2Os b) Cо c) Feo d) OCI2 e) MgCl2 f) CuCl2 g) Ca(NO3)2 h) NaOH 9. Make Lewis structure, predict the molecular geometry and polarity of the following molecules. (16 Points) a) NCI3
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