themuffinyamber
New member
- Joined
- Jan 24, 2018
- Messages
- 4
So this is driving me crazy. In my Chemistry class, we are learning about retaining significant figures and digits of precision in problems with Mixed Operations. We are told not to round until the end, but to use superscripts to retain significant figures/digits of precision. I have submitted this answer and it was marked incorrect. PLEASE HALP!! Thank you!!!
0.5230 73.152 - 2.35
-------- - ---------------- * 5.72
1.2941 0.001
First I take care of my fractions:
0.5230/1.2941 = 0.404141 (4 SFs retained)
73.152-2.35 = 70.802 (2 digits of precision retained)
70.802/0.001 = 70802 (w/b 70000 for 1 SF)
Problem is now:
0.404141 - 70000 (70802) * 5.72
Multiplication first:
70802 * 5.72 = 404987.44 (0 digits of precision)
Then Subtraction:
0.404141 - 404987.44 = -404987.0359
-404987.0359 = -404987.04 (2 digits of precision)
I've tried submitting -404987.04 AND -404987 and both are incorrect. I can't figure it out! Ripping my hair out! Please help
0.5230 73.152 - 2.35
-------- - ---------------- * 5.72
1.2941 0.001
First I take care of my fractions:
0.5230/1.2941 = 0.404141 (4 SFs retained)
73.152-2.35 = 70.802 (2 digits of precision retained)
70.802/0.001 = 70802 (w/b 70000 for 1 SF)
Problem is now:
0.404141 - 70000 (70802) * 5.72
Multiplication first:
70802 * 5.72 = 404987.44 (0 digits of precision)
Then Subtraction:
0.404141 - 404987.44 = -404987.0359
-404987.0359 = -404987.04 (2 digits of precision)
I've tried submitting -404987.04 AND -404987 and both are incorrect. I can't figure it out! Ripping my hair out! Please help