Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
This brings us to one thing that uniformly drives students crazy. When anything is measured in the lab, you must keep track of how accurately you can measure it. If you measure your licorice with a ruler, you can pretty easily tell how many centimeters long it is. With a little more effort, you can measure to the nearest tenth of a centimeter. One rule of thumb is that no matter how hard you try, you can only measure to the smallest division on your measuring instrument - in this case 0.05 cm with a ruler marked in tenths of cm, millimeters. This would mean that you are fudging and I will immediately know it if you tell me your licorice is 13.5762 cm long. You cannot measure closer than 13.55 0.05 cm with any accuracy with a standard wooden ruler marked in tenths of cm. It does not mean there is no possible way you can get a measurement with this many significant digits - you do need a better instrument to measure with though. In the following example we have claimed a slightly better accuracy than the rule of thumb given - this is as close as I would want to stretch it.
When you make more than one measurement of a length you are not changing the accuracy of your instrument (smallest division on your ruler) but you can change the precision of your measurement because by repeating the measuring process. When you carefully repeat a measurement several times, you are eliminating the possibility that, for example, you take a poor reading because you forgot to line up the end of the licorice with the 0 on the ruler well. So you are often encouraged to take measurements several times and average the results. Hint - if one measurement seems really different than what you might expect, try measuring it again. This is one of the quickest and least frustrating ways to catch errors in lab, hopefully before you leave for your next class.
What are photochemical reactions? Explain the mechanism of the photo- chemical reaction occurring among hydrogen and chlorine gas.
If value of azimuthal quantum number l is 2, then total possible values of magnetic quantum number will be: (1) 7 (2) 5 (3) 3 (4) 2 Ans: 3
LANTHANUM AND THE LANTHANIDES The lanthanides are 14 components following lanthanum in the periodic table, and associated with the filling of the seven orbitals of the
A chemical transport barge routinely carries chemicals across Lake Futura. In an unfortunate incident the chemical transport barge, carrying a solution of phenol in synthetic oil,
all explanation
Which type of bond is formed between similar atoms: (1) Ionic (2) Covalent (3) Coordinate (4) Metallic Ans: Covalent
I wanna knw what is alpha hydrogen and how to count it
DISCUSS THE THEORY OF SOFT AND HARD ACID AND BASE
Gabriel phthalimide synthesis: This method includes the subsequent three steps. 1. Phthalimide is reacted along with KOH to form potassium phthalimide. 2. The potassium salt
Piezoelectric effect is the production of electricity by?? Piezoelectric effect is the forming of electricity by pressure.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd