Exam (elaborations)
Portage Chemistry 103 Module 1 Exam Study 2024/2025 graded A+ by experts
- Course
- Institution
Portage Chemistry 103 Module 1 Exam Study 2024/2025 graded A+ by experts
[Show more]
1 review
By: proscia44 • 4 months ago
By: Ascore • 4 months ago
Thank you for the review, I appreciate your feedback and feel free to reach out for more resourceful documents. All the best in your studies.
Content preview
Portage Chemistry 103 Module 1 ExamStudy
1.1 EXPONENTIAL NUMBERS (지수)
The speed of light is 186,000 miles per second. This is 1.86 x 105 (in exponential form)
The diameter of an E. coli cell is 0.00000080 meters = 8.0 x 10-7 (in exponential form)
4950000000. A number larger than one will have a positive exponent. Move the decimal point
nine places to the left to give 4.95 x 109
0.00000000000056 A number smaller than one will have a negative exponent. Move the
decimal point 13 places to the right to give 5.6 x 10-13
1.) 0.00000456 = smaller than 1 = negative exponent, move decimal 6 places = 4.56 x 10-6
2.) 2.63 x 107 = positive exponent = larger than 1, move decimal 7 places = 26300000.
3.) 7800000. = larger than 1 = positive exponent, move decimal 6 places = 7.8 x 106
4.) 8.26 x 10-5 = negative exponent = smaller than 1, move decimal 5 places = 0.0000826
5.) 5.38 x 10-3 = negative exponent = smaller than 1, move decimal 3 places = 0.00538
6.) 0.000673 = smaller than 1 = negative exponent, move decimal 4 places = 6.73 x 10-4
7.) 3.82 x 104 = positive exponent = larger than 1, move decimal 4 places = 38200.
8.) 623000000. = larger than 1 = positive exponent, move decimal 8 places = 6.23 X 108
1.2: METRIC SYSTEM - UNIT CONVERSIONS
1 foot (ft)=12 inches (in)
1 kilogram (kg)=1000 grams (g)
1 pound (lb)=16 ounces (oz)
1 gallon (gal)=4 quarts (qt)
1000 milliliters (ml)=1 liter (L)
100 centigrams (cg)=1 gram (g)
,10 decimeters (dm)=1 meter (m)
Brainpower
Read More
Previous
Play
Next
Rewind 10 seconds
Move forward 10 seconds
Unmute
0:00
/
0:15
Full screen
The prefixes kilo (= 1000), milli (= 1/1000), centi (= 1/100), and deci (= 1/10)
are used with any metric unit, such as grams (weight), liters (volume), and meters (distance).
The original quantity and unit (to be converted) are multiplied by a conversion factor (which is a
fraction made up as follows):
New unit (on top) / Old unit (on bottom)
48 ounces = ? pounds
48 o z × 1 p o u n d / 16 o z = 3 p o u n d s
4 kilograms = ? grams
4 Kg X 1000 grams/1kg = 4000 grams
1.) 656 cm x 1 m / 100 cm = 6.56 m
2.) 20 gal x 4 qt / 1 gal = 80 qts
3.) 7820 ml x 1 liter / 1000 ml = 7.82 liters
4.) 36 g x 1000 mg / 1 g = 36000 mg
5.) 25.3 g x 10 dc / 1 g = 253 dg
6.) 6.2 m x 1000 mm / 1 m = 6200 mm
7.) 725 l x 1000 ml / 1 liter = 725,000 ml
8.) 56 ft x 12 in / 1 ft = 672 in
, 1.3: TEMPERATURE CONVERSIONS
1.) 132 oC + 273 = 405 oK
2.) 132 oF - 32 x 1.8 = 55.6 oC + 273 = 328.6 oK
3.) 285 oK - 273 = 12 oC
4.) 60 oC x 1.8 + 32 = 140 oF
5.) 85 oF - 32 x 1.8 = 29.4 oC
6.) 52 oC + 273 = 325 oK
7.) 32 oC x 1.8 + 32 = 89.6 oF
8.) 412 oK - 273 = 139 oC x 1.8 + 32 = 282.2 oF
K to °C(°C and K differ by 273)
K (larger) - 273 = °C (smaller)
°C to K(°C and K differ by 273)
°C (smaller) + 273 = K (larger)
°F to °C(Subtract 32, and divide by 1.8)
°F - .8 = °C
°C to °F(Multiply by 1.8, and add 32)
°C X 1.8 + 32 = °F
1.4: DENSITY
Density represents the mass of a substance in a unit volume of that substance. The density of
most solids or liquids is expressed in the unit grams per milliliter (or g/ml).
The following equation is used to calculate density if you know the mass (in grams) and the
volume (in milliliters).
D (g/ml) = M(g) / V(ml)
1.) 35.6 ml = V 1.86 g/ml = D find M = D x V = 1.86 x 35.6 = 66.2 grams
2.) 13.6 g/ml = D 1000 g = M find V = M / D = .6 = 73.5 ml
3.) 200 ml = V 620 g = M find D = M / V = 620 g / 200 ml = 3.10 g/ml
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Ascore. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now