CHEM 51 Los Angeles Trade Technical College Scientific Notation Chemistry Questions

Question Description

1. Evaluate to the appropriate number of significant figures and express in scientific notation:(5.120 x 10-15 + 5.120 x 10-13 + 5.120 x 10-11) / 9.471 x 10-9.

2. Convert -4680 oF into KChemistry

3. Find the missing quantity in its normal units (gm, kg, cm3, m3, etc.): volume = 4.975 gigameters3, density =4.975 nanogm/nm3.

4. Knowing that 1 calorie = 4.184 joules and 1kWh = 3.6 x 106Joules, convert the following: 9732 femtoWhinto gigacalories.

5. You have decided to patent a new temperature scale, called the LATTC unit. The LATTC units are not basedon water, but rather dichloromethane, CH2Cl2, which melts at -97oC and boils at 40oC. You have decided thaton your scale, the freezing point of dichloromethane is -1000o LATTC and the boiling point is +1000o LATTC.Determine the relationship to convert oC into o LATTC and o LATTC into oC.

6. How many terayears are in 67.00 picoseconds? (Assume that one year = 365 days)

7. Platinium has a density of 21.45 grams/cm3. The mass of a weighing boat is tared to zero and the mass of apiece of platinium and the weighing boat is 102.554 grams. If the piece of platinium is added to 55 ml of waterin a 100 ml graduated cylinder, to what volume reading will the water level rise in the cylinder?

8. The fuel tank in Randys car holds a total of 27.5 gallons of fuel. Randy has $65.00 to fill his fuel tank afterhe had traveled 293 miles when starting with a full tank. There were 7.9 gallons of fuel left in his tank when hefilled up at the gas station. What was his fuel economy in miles per gallon and how much did he pay per gallon?



^{Have a similar assignment? "Place an order for your assignment and have exceptional work written by our team of experts, guaranteeing you A results."}

Our Service Charter

1. Professional & Expert Writers: Eminence Papers only hires the best. Our writers are specially selected and recruited, after which they undergo further training to perfect their skills for specialization purposes. Moreover, our writers are holders of masters and Ph.D. degrees. They have impressive academic records, besides being native English speakers.

2. Top Quality Papers: Our customers are always guaranteed of papers that exceed their expectations. All our writers have +5 years of experience. This implies that all papers are written by individuals who are experts in their fields. In addition, the quality team reviews all the papers before sending them to the customers.

3. Plagiarism-Free Papers: All papers provided by Eminence Papers are written from scratch. Appropriate referencing and citation of key information are followed. Plagiarism checkers are used by the Quality assurance team and our editors just to double-check that there are no instances of plagiarism.

4. Timely Delivery: Time wasted is equivalent to a failed dedication and commitment. Eminence Papers are known for the timely delivery of any pending customer orders. Customers are well informed of the progress of their papers to ensure they keep track of what the writer is providing before the final draft is sent for grading.

5. Affordable Prices: Our prices are fairly structured to fit in all groups. Any customer willing to place their assignments with us can do so at very affordable prices. In addition, our customers enjoy regular discounts and bonuses.

6. 24/7 Customer Support: At Eminence Papers, we have put in place a team of experts who answer all customer inquiries promptly. The best part is the ever-availability of the team. Customers can make inquiries anytime.