Question

this is all the information given

CHEM-C 105 Principles of Chemistry l Worksheet 1 Ch. E and Ch. 1 Mrs. Brandon 7questions, 40points Answer each of the following questions, being sure to show all work (using method) and express all answers to the correct number of significant figures. Answers must either be handwritten or entered using an equation editor. Your score will be scaled to 50 points. Upload your solutions as a single Word or PDF file to the Assignments tool. the dimensional analysis (4 points) The distance from Richmond to Muncie along the Cardinal Greenway is 41.3miles. What is this distance in kilometers? [1km-0.6214miles (to 4s.f.)) 1. (7 points) How many quarters do you need to make a 10.0ft high pile of quarters? The thickness of a quarter is 1.75mm. lift -0.3048m] 2. ได้ 1.75mn 3. (5 points) A circle has an area of 2659cm2. What is its area in square meters? 4. (8 points) The diameter of a carbon atom is 1.54 A. Assuming that atoms are aligned side by side in a straight line across the diameter of a 0.70mm piece of mechanical pencil lead, how many carbon atoms span the diameter of the pencil lead? [1'A- 10-10 m) 5. (6 points) Tro, Chemistry: Structure and Properties, Ch. 1, Q. 78 6. (4 points) Find the mass of 5.50mol of gadolinium (Gd, Z- 64). 7. (6 points) How many nitrogen atoms are there in 4.37g nitrogen? CHEM-C 105 Worksheet 1 Mrs. Brandon Principles of Chemistry I Ch. E and Ch. 1 7questions, 40 points Answer each of the following questions, being sure to show all work (using the dimensional analysis method) and express all answers to the correct number of significant figures. Answers must either be handwritten or entered using an equation editor. Your score will be scaled to 50 points. Upload your solutions as a single Word or PDF file to the Assignments tool. 1. (4 points) The distance from Richmond to Muncie along the Cardinal Greenway is 41.3miles. What is this distance in kilometers? [1 km = 0.6214 miles (to 4 s. 2. (7 points) How many quarters do you need to make a 10.0 ft high pile of quarters? The thickness of a quarter is 1.75 mm. [1 ft 0.3048 m 3. (5 points) A circle has an area of 2659 cm2. What is its area in square meters? 4. (8 points) The diameter of a carbon atom is 1.54 A. Assuming that atoms are aligned side by side in a straight line across the diameter of a 0.70 mm piece of mechanical pencil lead, how many carbon atoms span the diameter of the pencil lead? [IA 1010 m 5. (6 points) Tro, Chemistry: Structure and Properties, Ch. 1, Q. 78 6. (4 points) Find the mass of 5.50 mol of gadolinium (Gd, Z-64). 7. (6 points) How many nitrogen atoms are there in 4.37 g nitrogen?

Answer 1

quarte! 1 m2 looocm l sy"A , іот"m 1.SND-lon-diane er of each caibon -

S s mol sa sg 864.88 ㄧ ^ mol of N2 there ac 6,022x 1023 molecules of N2 and 2x G.022 x lo 23 aloms mol of N2 is equal b 26 28 2x 6.022 x I023 atoms 329 1.88 1023 oNons