anonymous
  • anonymous
PLEASE HELP - MEDAL AND FAN: Hey guys, sorry I know this isn't exactly math, but there was nobody in chemistry. I have a few questions on significant figures and I was wondering if you could check my answers?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@ganeshie8 @Nnesha
anonymous
  • anonymous
The first one is 6.07 * 10^-15 How many sig figs? I put 3, is that correct?
Vocaloid
  • Vocaloid
yes

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More answers

anonymous
  • anonymous
ok 0.003840 How man sigfigs? 4?
Vocaloid
  • Vocaloid
yes
anonymous
  • anonymous
17.00 4 sig figs?
Vocaloid
  • Vocaloid
yes
anonymous
  • anonymous
8 * 10^8 I think this one is 1 sig fig?
Vocaloid
  • Vocaloid
yup
anonymous
  • anonymous
lol ok - 463.8052 7 sig figs
Vocaloid
  • Vocaloid
yes
anonymous
  • anonymous
300 has 1 301 has 3 and 300. has 3 ?
Vocaloid
  • Vocaloid
yes to all
anonymous
  • anonymous
Awesome, so 100 has 1 and 1.0 * 10^2 has 1 as well right?
Vocaloid
  • Vocaloid
almost 1.0 * 10^2 has 2, since we count the 0 after a decimal point
anonymous
  • anonymous
oh ok - so would 1.00 * 10^3 be 3?
Vocaloid
  • Vocaloid
yes
anonymous
  • anonymous
100. 3 s.f.?
Vocaloid
  • Vocaloid
yup
anonymous
  • anonymous
0.0048 has 2? 0.00480 has 3? 4.80 * 10^-3 has 3? 4.800 * 10^-3 has 4?
Vocaloid
  • Vocaloid
yes to all
anonymous
  • anonymous
ok what about rounding to sig figs? 0.00034159 to three digits? how do i do that
Vocaloid
  • Vocaloid
well, 0.00034159 has 5 sig figs, so we look at the third digit from the right (1). then we look at 5 (the next digit) to see whether to keep 1 or round to 2. since it's 5 we round 1 to 2 like so: 0.00342
anonymous
  • anonymous
ok but what happened to the third zero?
Vocaloid
  • Vocaloid
oh whoops 0.000342
anonymous
  • anonymous
haha ok thats what i thought the next one is 103.351 * 10^2 to 4 digits. 103.4?
Vocaloid
  • Vocaloid
yup, but don't forget the 10^2
anonymous
  • anonymous
ok so i keep that. Next one is: 17.9915 to 5 digits 17.992
Vocaloid
  • Vocaloid
yup
anonymous
  • anonymous
ok and the last one: 3.365 * 10^5 to 3 digits 3.37 * 10^5 ?
Vocaloid
  • Vocaloid
yes
anonymous
  • anonymous
btw you are awesome, my teach gave homework without teaching (which is ok except for the fact that I don't have my textbook yet lol)

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