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A scientist has a piece of lead in a beaker. The piece of lead has a...
BIOCHEMISTRY please help me out! A2. A scientist has a beaker of water. She adds 10 ml of sunflower oil into the beaker...
BIOCHEMISTRY
please help me out!
A2. A scientist has a beaker of water. She adds 10 ml of sunflower oil into the beaker of water and stirs it. The water becomes cloudy, then gradually clears as an oily layer forms on the surface. The structure of sunflower oil is shown below: o O What is happening here? Why does the oil behave this way in the solvent water? Draw diagrams of chemical structures and use thermodynamic terms and equations to...
A sample of lead has a mass of 21.00 kg and a density of 1.130 x104...
A sample of lead has a mass of 21.00 kg and a density of 1.130 x104 kg/m3 at 0°C. (Assume the average linear expansion coefficient for lead is 2.900 x 10-5(°C−1).) (a) What is the density of lead at 89.00°C? (Give your answer to four significant figures.) Answer in kg/m3 (b) What is the mass of the sample of lead at 89.00°C? Answer in kg
A sample of lead has a mass of 92.00 kg and a density of 1.130 times...
A sample of lead has a mass of 92.00 kg and a density of 1.130 times 10^4 kg/m^3 at 0 degree C. (Assume the average linear expansion coefficient for lead is 2.900 times 10^-5 (degree C^-1).) (a) What is the density of lead at 72.00 degree C? (Give your answer to four significant figures.) kg/m^3 (b) What is the mass of the sample of lead at 72.00 degree C? kg
A 89g piece of lead was heated up to 285C and put into 400mL of water...
A 89g piece of lead was heated up to 285C and put into 400mL of water (at 15C). What is the final temperature of the lead? (3 marks) Table 8.4 Specific Heat Capacities Specific heat Material capacity (J/kg) Liquid nitrogen 11 x 10 Gold 1.3 X 10 Lead 1.3 x 102 Mercury 1.4 x 10 Steam 20 x 102 Silver 23 x 10 Ethyl alcohol 2.4 x 10 Glycerine 2.4 x 10 Methyl alcohol 2.5 x 10 Brass 3.8 x...
a hand grenade explodes into 3 pieces each piece flying 120 degrees relative to each other....
a hand grenade explodes into 3 pieces each piece flying 120 degrees relative to each other. Piece 1 has a mass of 4 kg -- Piece 2 has a mass of 8 kg & speed of 2 m/s Piece 3 has a mass of 8 kg & speed of 2 m/s what is the speed of piece 1?
A cylindrical piece of steel has a diameter of 50 mm and a length of 200...
A cylindrical piece of steel has a diameter of 50 mm and a length of 200 mm. Steel has a density of 7200 kg/m3 a) (3 points) Determine the mass of this piece in kg. 1. b) (3 points) If a 10 mm diameter opening is drilled through the entire length of this cylinder and that portion removed, what is the new mass of this piece? c) (4 points) The 10 mm diameter piece is pulled with a force of...
You have the six pieces of metal listed below, plus a beaker of water containing 300...
You have the six pieces of metal listed below, plus a beaker of water containing 300 g of water. The water temperature is 21.0°C and its specific heat is 4.184 J/g.°C. Metal Specific heat (J/g.°C) Mass (8) 1. AI 0.9002 100.0 2. AI 0.9002 50.0 3. Au 0.1289 100.0 4. Au 0.1289 50.0 5. Zn 0.3860 100.0 6. Zn 0.3860 50.0 In an experiment, you are asked to select one piece of metal and heat it to 100.0 °C, and...
1). Determine the thickness of a piece of platinum foil that has a mass of 2.000...
1). Determine the thickness of a piece of platinum foil that has a mass of 2.000 g, and has length and width of 9.85 cm and 5.20 cm, respectively. Note that the density of platinum is 21.45 g/cm3 . 2). A 100.06-g piece of tungsten metal is dropped into a graduated cylinder containing water. If the water level in the graduated cylinder is observed to increase from 14.5 mL to 19.7 mL, what is the density of tungsten? 3.) What...
A lead block of mass 7.0 kg is originally at a temperature of 15°C and 1 atm. It is then heated to a temperature of 64°...
A lead block of mass 7.0 kg is originally at a temperature of 15°C and 1 atm. It is then heated to a temperature of 64°C without any change in pressure. The specific heat of lead is 128 J/(kg - °C), its density is 1.13 x 104 kg/m3, and the coefficient of linear expansion is 29 x 10 -6/oC (a) Determine the work done by the lead block (b) How much heat energy is transferred during this process? J (c)...
Data Mass of Beaker 1 13.3949 _ T\५. ५०४१ 130.7 249 13 R.0269 Mass of Beaker...
Data Mass of Beaker 1 13.3949 _ T\५. ५०४१ 130.7 249 13 R.0269 Mass of Beaker 1 + CaCl2 Mass of Beaker 2 Mass of Beaker 2 + KIO S8.3409 Mass of Watch Glass + Filter Paper S9.SIS9 Mass of Watch Glass + Filter Paper + Ca(IO3)2(after 1st Heating) 51. S219 Mass of Watch Glass + Filter Paper + Ca(IO3)2(after 2nd Heating) 131.6489 Mass of Beaker 2 +Residue (after 1st Heating) 131-6349 Mass of Beaker 2 + Residue (after 2nd...
BIOCHEMISTRY
please help me out!
A2. A scientist has a beaker of water. She adds 10 ml of sunflower oil into the beaker of water and stirs it. The water becomes cloudy, then gradually clears as an oily layer forms on the surface. The structure of sunflower oil is shown below: o O What is happening here? Why does the oil behave this way in the solvent water? Draw diagrams of chemical structures and use thermodynamic terms and equations to...
A sample of lead has a mass of 92.00 kg and a density of 1.130 times 10^4 kg/m^3 at 0 degree C. (Assume the average linear expansion coefficient for lead is 2.900 times 10^-5 (degree C^-1).) (a) What is the density of lead at 72.00 degree C? (Give your answer to four significant figures.) kg/m^3 (b) What is the mass of the sample of lead at 72.00 degree C? kg
A 89g piece of lead was heated up to 285C and put into 400mL of water (at 15C). What is the final temperature of the lead? (3 marks) Table 8.4 Specific Heat Capacities Specific heat Material capacity (J/kg) Liquid nitrogen 11 x 10 Gold 1.3 X 10 Lead 1.3 x 102 Mercury 1.4 x 10 Steam 20 x 102 Silver 23 x 10 Ethyl alcohol 2.4 x 10 Glycerine 2.4 x 10 Methyl alcohol 2.5 x 10 Brass 3.8 x...
A cylindrical piece of steel has a diameter of 50 mm and a length of 200 mm. Steel has a density of 7200 kg/m3 a) (3 points) Determine the mass of this piece in kg. 1. b) (3 points) If a 10 mm diameter opening is drilled through the entire length of this cylinder and that portion removed, what is the new mass of this piece? c) (4 points) The 10 mm diameter piece is pulled with a force of...
You have the six pieces of metal listed below, plus a beaker of water containing 300 g of water. The water temperature is 21.0°C and its specific heat is 4.184 J/g.°C. Metal Specific heat (J/g.°C) Mass (8) 1. AI 0.9002 100.0 2. AI 0.9002 50.0 3. Au 0.1289 100.0 4. Au 0.1289 50.0 5. Zn 0.3860 100.0 6. Zn 0.3860 50.0 In an experiment, you are asked to select one piece of metal and heat it to 100.0 °C, and...
A lead block of mass 7.0 kg is originally at a temperature of 15°C and 1 atm. It is then heated to a temperature of 64°C without any change in pressure. The specific heat of lead is 128 J/(kg - °C), its density is 1.13 x 104 kg/m3, and the coefficient of linear expansion is 29 x 10 -6/oC (a) Determine the work done by the lead block (b) How much heat energy is transferred during this process? J (c)...
Data Mass of Beaker 1 13.3949 _ T\५. ५०४१ 130.7 249 13 R.0269 Mass of Beaker 1 + CaCl2 Mass of Beaker 2 Mass of Beaker 2 + KIO S8.3409 Mass of Watch Glass + Filter Paper S9.SIS9 Mass of Watch Glass + Filter Paper + Ca(IO3)2(after 1st Heating) 51. S219 Mass of Watch Glass + Filter Paper + Ca(IO3)2(after 2nd Heating) 131.6489 Mass of Beaker 2 +Residue (after 1st Heating) 131-6349 Mass of Beaker 2 + Residue (after 2nd...
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