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Question1 1 pts Why does nail have sharp tip? O It is problem with the manufacturing...
Question 7 1 pts the volume of the When an object is floating in water, it...
Question 7 1 pts the volume of the When an object is floating in water, it displaces a volume of water object. greater than less than equal to Question 8 1 pts When an object floats on water, it displaces a mass of water larger than the mass of the object. True False Question 9 1 pts If the density of an object is larger than the density of water, it will not float in water. True False
Please explain why the correct answer is correct, and why the others can't be. 1. Why...
Please explain why the correct answer is correct, and
why the others can't be.
1. Why do astronauts on the International Space Station float, apparently weightless, rather than stand on the floor? (The space station is about 400km above the surface of the Earth) a. There is no gravity in space b. The gravitational field is virtually zero c. The astronauts have no mass in space d. The astronauts and space station are both in freefall e. The gravitational force...
1.) Saltwater is slightly denser than fresh water. If you swim below the surface in saltwater,...
1.) Saltwater is slightly denser than fresh water. If you swim below the surface in saltwater, will the pressure be greater than in freshwater at the same depth?/1 2.) Suppose that you balance a5 kg ball on the tip of your finger, which has an area of 0.0001 m. Find the pressure on your finger in Pa Don't forget to first find the force of gravity on the ball/3 3) Why isn't there a horizontal buoyant force on an object...
Lab Report Guide: - 1. Results (4 pts) o Tables neatly filled out with data o ...
Lab Report Guide: - 1. Results (4 pts) o Tables neatly filled out with data o Proper significant figures o Legible sample calculations - 2. Error Analysis (4 pts) o Determination of percent error (for glassware and metal densities) o Typed discussion of measured results vs literature results and description of possible sources of error. Note that “human error” is not an acceptable answer. Please be specific. - 3. Post Lab Questions (4 pts) o Hand written answers to the...
Lab Exercise: Liquids and Gases Answer Key LAB EXERCISE: LIQUIDS AND GASES Part 1: Buoyancy Fill...
Lab Exercise: Liquids and Gases Answer Key
LAB EXERCISE: LIQUIDS AND GASES Part 1: Buoyancy Fill a large glass half full of water. 1. Carefully place a raw egg in the glass of water. 2. Does the egg sink or float? 3. 4. Based on the results, which do you think is the most dense? The egg or the water? 5. Gradually add salt to the water, stirring after each addition to dissolve it. Careful! Don't break the egg! Keep...
T/F (1) Additives added to ethanol will have the same effect on boiling point as the...
T/F
(1) Additives added to ethanol will have the same effect on boiling point as the same amount of additives added to water Ethanol changes its solution boiling point with additive mass fraction of 0.15 more than water changes its boiling point with a mass fraction of 0.25 If the activity coefficient of solute A in a solution is equal to 1, A has little to no preference to other molecules around it in solution It is likely that flavors...
1,4? Part I: Choose five of these questions. (12 points each) 1. Here is the van...
1,4?
Part I: Choose five of these questions. (12 points each) 1. Here is the van der Waals Equation for one mole of gas P Given this equation, how does the infinitesimal change in pressure, or as specific as possible. (In other words, evaluate the derivatives.) with d V and dT? B e-NV, where is the sity her of molecules and V is the fshe wall perpendicular to the 2. A sample of gas molecules of density N e e...
the weight if the initial product was 3.4 grams of methyl benzoate. Who |o yald foR 3.91SSg st prodoc...
the
weight if the initial product was 3.4 grams of methyl
benzoate.
Who |o yald foR 3.91SSg st prodoct nd product 2.14143 EXPERIMENTAL PROCEDURE SAFETY WEAR nitrile gloves for this experiment. The nitrating moture of sulfuric acidnitric acid (1:1) is a very strong acid system. Do not allow it to come in contact with your skin or clothing. It will cause acid burns if it comes in contact with your skin (and holes an your clothes). Wash any affected area...
3,9? Part I: Choose five of these questions. (12 points each) Ana 1. Here is the...
3,9?
Part I: Choose five of these questions. (12 points each) Ana 1. Here is the van der Waals Equation for one mole of gas: P -by vary with dV and dT? Bethe Given this equation, how does the infinitesimal change in pressure, dl. as specific as possible. (In other words, evaluate the derivatives.) andard 2. A sample of gas molecules of density D N / Vwhere N is the numbe volume) is moving with a speed y, in the...
check each statement about the temperature, check each item that is a unit of pressure, which...
check each statement about the temperature, check each item that is
a unit of pressure, which of the following pairs of substances are
held together by hudrogen bonds, multiple choice, name the phase
16. Check each true statement about the temperature 0 K. The K stands for kilo. The K stands for Kelvin. This is a temperature that is suitable for biological processes. It is absolute zero. This temperature is the middle of the Kelvin scale. This is the coldest...
Question 7 1 pts the volume of the When an object is floating in water, it displaces a volume of water object. greater than less than equal to Question 8 1 pts When an object floats on water, it displaces a mass of water larger than the mass of the object. True False Question 9 1 pts If the density of an object is larger than the density of water, it will not float in water. True False
Please explain why the correct answer is correct, and
why the others can't be.
1. Why do astronauts on the International Space Station float, apparently weightless, rather than stand on the floor? (The space station is about 400km above the surface of the Earth) a. There is no gravity in space b. The gravitational field is virtually zero c. The astronauts have no mass in space d. The astronauts and space station are both in freefall e. The gravitational force...
1.) Saltwater is slightly denser than fresh water. If you swim below the surface in saltwater, will the pressure be greater than in freshwater at the same depth?/1 2.) Suppose that you balance a5 kg ball on the tip of your finger, which has an area of 0.0001 m. Find the pressure on your finger in Pa Don't forget to first find the force of gravity on the ball/3 3) Why isn't there a horizontal buoyant force on an object...
Lab Exercise: Liquids and Gases Answer Key
LAB EXERCISE: LIQUIDS AND GASES Part 1: Buoyancy Fill a large glass half full of water. 1. Carefully place a raw egg in the glass of water. 2. Does the egg sink or float? 3. 4. Based on the results, which do you think is the most dense? The egg or the water? 5. Gradually add salt to the water, stirring after each addition to dissolve it. Careful! Don't break the egg! Keep...
T/F
(1) Additives added to ethanol will have the same effect on boiling point as the same amount of additives added to water Ethanol changes its solution boiling point with additive mass fraction of 0.15 more than water changes its boiling point with a mass fraction of 0.25 If the activity coefficient of solute A in a solution is equal to 1, A has little to no preference to other molecules around it in solution It is likely that flavors...
1,4?
Part I: Choose five of these questions. (12 points each) 1. Here is the van der Waals Equation for one mole of gas P Given this equation, how does the infinitesimal change in pressure, or as specific as possible. (In other words, evaluate the derivatives.) with d V and dT? B e-NV, where is the sity her of molecules and V is the fshe wall perpendicular to the 2. A sample of gas molecules of density N e e...
the
weight if the initial product was 3.4 grams of methyl
benzoate.
Who |o yald foR 3.91SSg st prodoct nd product 2.14143 EXPERIMENTAL PROCEDURE SAFETY WEAR nitrile gloves for this experiment. The nitrating moture of sulfuric acidnitric acid (1:1) is a very strong acid system. Do not allow it to come in contact with your skin or clothing. It will cause acid burns if it comes in contact with your skin (and holes an your clothes). Wash any affected area...
3,9?
Part I: Choose five of these questions. (12 points each) Ana 1. Here is the van der Waals Equation for one mole of gas: P -by vary with dV and dT? Bethe Given this equation, how does the infinitesimal change in pressure, dl. as specific as possible. (In other words, evaluate the derivatives.) andard 2. A sample of gas molecules of density D N / Vwhere N is the numbe volume) is moving with a speed y, in the...
check each statement about the temperature, check each item that is
a unit of pressure, which of the following pairs of substances are
held together by hudrogen bonds, multiple choice, name the phase
16. Check each true statement about the temperature 0 K. The K stands for kilo. The K stands for Kelvin. This is a temperature that is suitable for biological processes. It is absolute zero. This temperature is the middle of the Kelvin scale. This is the coldest...
Most questions answered within 3 hours.
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