Chemistry

Chemistry, 05.11.2019 07:31, damian11154

What is the magnitude of total charge of all the electrons in 2.4 l of liquid water?

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Physics, 11.07.2019 00:20, josephgperez

How many electrons must be transferred to a body to produce a charge of 125 nc? a. 1.25 x 107 b. 3.45x 1011 c. 1.60x 10-19 d. 7.81 x1011 e. 1.28x 1012 2. protons a. are about 2000 times more massive than electrons. b. are about 2000 times less massive than electrons. c. have 2000 times the charge of electrons. d. have 1/2000 the charge of electrons. 3. charge a is +50 nc and is 10.0 cm from charge b, which is +100 nc. what is true about the forces on the charges? a. the force on a and the force on b are equal in magnitude but opposite in direction. b. the force on a is larger than the force on b, and they are opposite in direction. c. the force on b is larger than the force on a, and they are opposite in direction. d. the force on a and the force on b are equal in magnitude and direction. 4. charges q1 and q2 exert repulsive forces of 10 n on each other. what is the repulsive force when their separation is decreased so that their final separation is 80% of their initial separation? a. 16 n b. 12 n c. 10 n d. 8.0 n e. 6.4 n 5. [in-class discussion wednesday] two positive charges (+8.0 mc and +2.0 mc) are separated by 300 m. a third charge is placed at distance r from the +8.0 mc charge in such a way that the resultant electric force on the third charge due to the other two charges is zero. the distance ris a. 0.25 km. b. 0.20 km. c.0.15 km. d. 0.13 km. e. 0.10 km.

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Physics, 17.08.2019 16:10, myloredo10

Matter is made out of atoms - assuming the conditions are not very extreme. in neutral atoms negative electrons orbit around the positive nucleus. the nucleus is composed of positive protons and neutral neutrons. in the most common isotope of hydrogen a single electron orbits a single proton. what is the magnitude of the electric charge represented by the the electrons in 1.57 kg of distilled water? (a 2 liter pop bottle can hold 2 kg of water.) hints: one mole of water contains 6.0221×1023 water molecules. one water molecule has ten electrons: eight from the oxygen atom and two from the two hydrogen atoms. the electric charge of an electron is 1.6022×10-19 c. this is called elementary charge. the molar mass of water is mwater = 18 g/mol, which means that the mass of one mole of water is 18 grams.

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Chemistry, 19.08.2019 02:30, fufnun3379

Which statement best describes the nucleus of an aluminum atom? (1) it has a charge of +13 and is surrounded by a total of 10 electrons. (2) it has a charge of +13 and is surrounded by a total of 13 electrons. (3) it has a charge of –13 and is surrounded by a total of 10 electrons. (4) it has a charge of –13 and is surrounded by a total of 13 electrons.

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What is the magnitude of total charge of all the electrons in 2.4 l of liquid water?...

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