Module 2 Lesson 1 Assignment Attempt review VVS

A 106.2 mL sample of 0.100 M methylamine ( CH3NH2; Kb = 3.7 x 10-4) is titrated with 0.235 M HNO3. Calculate the pH after the addition of each of the following volumes of acid.

< STARTING AMOUNT X The distance between the centers of two oxygen atoms in an oxygen molecule is 1.21 x 10⁰ cm What is this distance in nm ? ADD FACTOR x( ) 10-⁰ 0.121 10-7 1.21 x 10 1.21 x 10-4 100 10² Question 18 of 46 nm 10-⁰ 1 0.0121 ANSWER 1.21 x 10-15 0.01 10⁰ 1210 1.21 x 10- RESET 1.21 10⁰

i think this is physics and chemistry so i hope you can help me to answer this, only TRUE OR FALSE

Question 2 of 22 This question is designed to ensure that you are using your calculator correctly. Use a calculator to do these calculations. Keep at least two significant figures in your answers. 1.6 x 104 %D 8.6 x 10-2 TOOLS x10

None

Choose the selection which most accurately gives both the value of the angle numbered 1 and the value of the angle numbered 2 in the figure above. Choose the best possible (most specific) answer. Other answers will be graded wrong. For example, if an angle is somewhat greater than 109.5 degrees, an answer which says that it is somewhat less than 120 degrees, while somewhat correct, will be graded wrong. a) Angle 1 is very close to 180 degrees and angle 2 is very close to 90 degrees. b) Angle 1 is somewhat less than 109.5 degrees and angle 2 is somewhat less than 109.5 degrees. c) Angle 1 is somewhat less than 109.5 degrees and angle 2 is very close to 90 degrees. d) Angle 1 is somewhat less than 109.5 degrees and angle 2 is somewhat less than 120 degrees. e) Angle 1 is somewhat more than 109.5 degrees and angle 2 is somewhat less than 109.5 degrees.

Pmease assist with number 1.   this is NOT a graded question.  See below: This is not a graded question as it is a practice question . I am 60 years old and helping my son prepare for the AP exam in a few months. We do questions at the back of the textbook by Zumdahl and Zumdahl

(number 15, for the second picture)

Which of the following statements concerning the SI system is/are correct? 1. Prefixes are used to indicate a power of ten multiplier for a given SI base unit of measurement. 2. Degrees Celsius (°C) is the SI base unit for temperature. 3. The kilogram (kg) is the SI base unit for mass. O1 only O2 only 3 only 1 and 3 O 1, 2, and 3

2

Rank the values according to magnitude. Please see screenhot. Can someone help me understand this?

Data Table 1. Mass of Pipetted Samples of Water (The first one is done for you. Sample Density (g/mL) mL Sample Mass (g) 1.00 0.99 g D = mass/volume = 0.99 g/1.00 mL = 0.99 g/mL 3.00 2.98 g /3.00 mL = 2.98 g 4.00 3.99 g /4.00 mL = 3.99 g 5.00 5.01 g 5.01 g /5.00 mL = 9.89 g 9.89 g/ 10.00 mL = 10.00

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 3: What is the molar mass of each of the following compounds?   A. C6H12O6   B. NaHCO3

Please answer both questions.

spell out names of compounds from part A and part B

Identify the longest length Group of answer choices 1.04 yd 86.87 cm 3.05 ft 1.05 m 38.0 in

1211 120 110- 100- 9어 1986,46cm-1, 92.30%T 1888.12cm-1, 86.12%T 523.69çof-1. 89.49%T 2115.07cm-1, 87,12%T 80- 2868.59cm-1, 81.50%T 2324.95cm-1, 80.38%T 3056.42cm-1, 78.57%T 550.70cm-1. 78.65%T 1702.35cm-1, 76.07%f 1927.16cm-1. 77.87%T 70- 564.67m-1, 79.00%T 1075 B3cm-1, 73.25%T 1998.63cm-1, 70.10%T 615,31cm-1. 70.28%T 596.43cm-1, 73.02%T 1175.49bm-1 68.00%T 1220.95cm-1, 70.17%T 1321.38cm-1, 65.41% 813.05cm-1 67.15%T 864.57cm-1, 70 74%T 1150.80cm-1, 71.53%T 764.65cm-1, 61.64%T 944.04cm-1|60.89%f 935.39cm-1, 61.19%T 918.05cm-1, 57.40%T 1160.53cm-1, 71.59%T 785.46cm-1, 79.57% 60- 1575.58cm-1, 58.026T 1447.52cm-1, 57.15%T 504.91cm-1, 67.34%T 1593.50cm-1, 54.46%T spom-1. 50- 702.64cm-1. 50d.16%T 692.96cm-1, 4.59%T 1650.46cm-1, 50.27%T 1274.05cm-1, 46.51%T 40- 636.49cm-1, 49.33%T 30- 20- 508.62cm1, 24.70%T 514.69cm-1. 26.58%T 10 94 4000 3500 3000 2500 2000 1500 1000 500 cm-1 Name Description Sample 2a 1 067 By Analyst Date Tuesday, July 07 2020 for

Can you help me answer this questions 4 and 5, this is from the previous question I just split my question, thanks

Please answer question 3 part A

a-d please

Please help me complete question 1,2,and 3

None

1 please assist with number one in the picture.  I want to be we are correct. This is not a graded question as it is a practice question . I am 60 years old and helping my son prepare for the AP exam in a few months. We do questions at the back of the textbook by Zumdahl and Zumdahl

11 11 10 10 9 - 0 9 8 8 7 T 7 6 6 5 1 5 ~Br 4 2 4 Alle 3 3 1 2 2 8 1 B 0

Can someone please help me fill this graph out and answer the 4 questions on the bottom thank you very much.

QUESTION 4 If the temperature is -55 °F, what is the corresponding temperature on the Kelvin scale? OA) 225 K OB) 218 K OC) 55 K D) 273 K QUESTION 5 * -- Stef 19mm IL. Click Save and Submit to save and submit. Click Save All Answers to save all answers.

Arrange the values to the magnitude. Which one is the greatest to the least?