#1: An object under a microscope has a diameter of 125 micrometers. What is its diameter in centimeters? A micrometer is one one-millionth, or 1.0 x 10^–6, of a meter.

A. 1.25 x 10^–1 mm

B. 1.25 x 10^–3 mm

C. 1.25 x 10^–6 mm

D. 1.25 x 10^–4 mm
**idk :( i know answer A is out b/c that is if it were to be answer A, then it is converting to millimeters...

Question

#1: An object under a microscope has a diameter of 125 micrometers. What is its diameter in centimeters? A micrometer is one one-millionth, or 1.0 x 10^–6, of a meter.

 A.      1.25 x 10^–1 mm 

  B.     1.25 x 10^–3 mm 

   C.    1.25 x 10^–6 mm

    D.   1.25 x 10^–4 mm
**idk :( i know answer A is out b/c that is if it were to be answer A, then it is converting to millimeters...

anonymous · Answer

#2: Which unit would you use when describing the concentration of a solution?

A.       g

 B.      kg

 C.      L

  D.     mol/L
***My answer: D. mol/L

anonymous · Answer

#3: Which of the following would not be revealed by a graph?

A.       the quality of the experimental design

 B.      the rate of change measured in the experiment

  C.     a positive relationship between two variables

   D.    the dependent variable used in the experiment
**my answer: A. quality of the experimental design

anonymous · Answer

what do you think?? :)

aaronq · Answer

# 1 is a.. the difference between a micrometer and a millimeter is 1000. 1 mm = 1000 micrometers

aaronq · Answer

i know they asked for cm but all their answers are in mm shah

aaronq · Answer

#2 and #3 are right!

anonymous · Answer

idk then.... :/

anonymous · Answer

yay! but what about #1??

aaronq · Answer

if you have 125micrometers and you know 1000micrometer = 1 mm then you divide 125 by 1000

anonymous · Answer

and i get 0.125
??

anonymous · Answer

what does that mean??

anonymous · Answer

sorry lemme fix that lol... typed the wrong stuff!!


An object under a microscope has a diameter of 125 micrometers. What is its diameter in centimeters? A micrometer is one one-millionth, or 1.0 x 10^–6, of a meter.

    A.   0.125 cm

     B.  1.25 x 10^–2 cm 

     C.  1.25 x 10^–3 cm

      D. 1.25 x 10^–4 cm
so my answer is still A??? 0.125 cm??

aaronq · Answer

it's B the difference is by 10000

aaronq · Answer

1 cm = 10000micrometers

anonymous · Answer

and last one!!!
 Bob is investigating whether the density of water changes with temperature. Which of the following variables should he change in his experiment?

A.       mass of the water used

  B.     volume of the water used

   C.    type of water used (bottled water or tap water)

   D.    temperature of the water
**my answer: D. temperature of the water...

idk is that right?? :)

aaronq · Answer

LOL if he's studying the change in temperature he better change the temperature haha

anonymous · Answer

haha so yeah? the answer to the last one is D?? :P just making sure :)

aaronq · Answer

and yes you're right

aaronq · Answer

haha yep!

anonymous · Answer

haha yayyy :) thank youu :)

aaronq · Answer

no problem at all! you got most of them right anyway :)

anonymous · Answer

lol thanks :) i really appreciated all your help!! u rock!! :) haha :)