DO YOU THINK YOU CAN ANSWER THESE?

1. Explain why we use rules of uncertainty for significant figures in scientific measurements and calculations?



2. What algebraic principal allows dimensional analysis to convert units using equality statements? In other words, what is the mathematical reasoning behind converting units?



3. To better illustrate the use of metric prefixes, I will give you four different lengths; you tell me which of the metric prefixes along with meter best describes them.

EX. The diameter of a penny would be best described as a cm.

A. Football field B. Thickness of a dime

C. Thickness of a hair D. Length of a car



4. Why is the metric system better than the English system of measurements?



5. Explain the difference between a Calorie, a calorie, and a joule.



6. Explain the difference between Kelvin, Celsius, and Fahrenheit. Your answer must include a discussion of what they are based on melting and boiling points of water.



7. You hurt your knee during a football game and your trainer put an icepack on it. Describe the system and surroundings involved in the action.



8. Describe how lake effect snow is cause by specific heat.



9. Discuss whether ice melting on a table is an exothermic or endothermic reaction, or if there is no reaction.



10. Describe all of the different changes taking place after you take a piece of ice at -40 degrees C, place it in a beaker and cook it using the Bunsen Burner until it turns to steam at 100 degrees C. Explain how you would calculate the heat involved in this reaction.



11. Convert 5.0 ounces to decigrams.



12. How many cm^3 or 1.234 X 10^4 mm^3?



13. How many food calories are in 6.12 joules?



14. If 74 calories of energy are added to 50 g of water at 27 degrees C, what is the final temp of the water?DO YOU THINK YOU CAN ANSWER THESE?
Hmm. Maybe, but why would I want to?DO YOU THINK YOU CAN ANSWER THESE?
i think i couldDO YOU THINK YOU CAN ANSWER THESE?
I admit defeat.DO YOU THINK YOU CAN ANSWER THESE?
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I would so wanna answer, but I don't have the time to read.DO YOU THINK YOU CAN ANSWER THESE?
I gave up after the first one lolDO YOU THINK YOU CAN ANSWER THESE?
Woah even i don't have that many questions for homework, wait,

I do.DO YOU THINK YOU CAN ANSWER THESE?
nope, can't answer them. can you?DO YOU THINK YOU CAN ANSWER THESE?
1.All nonzero digits are significant. Thus, 8.15 cm, 0.723 cm, 52.3 cm, and 0.000234 cm all contain three significant figures.

Zeros between nonzero digits are significant. There are three significant figures in each of the measurements, 101 cm, 10.5 cm and 1.06 cm.

Terminal zeros to the right of the decimal point are significant. There are three significant figures in 0.100 cm, 0.110 cm, and 1.00 cm.

Zeros preceding the first nonzero digit are not significant. There are three significant figures in 0.0101 cm, 0.00100 cm and 0.000101 cm.

Terminal zeros in a number without an explicit decimal point may or may not be significant. When a measurement is given as 200 cm, you do not know whether one, two, or three significant figures were intended. Any uncertainty can be removed by expressing the number in scientific notation.





2.?



Thats all i know lolDO YOU THINK YOU CAN ANSWER THESE?
ummmm.... Would you please translate that in English? :D

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