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17. The reaction NaCl + AgNO, reaction known as AgCl + NaNO, represents the general type...
Multiple choice 19:11 € Inorganic Chemistry 10060575-E1.pdf 19. The specific-heat method of determining atomic and molecular...
Multiple choice
19:11 € Inorganic Chemistry 10060575-E1.pdf 19. The specific-heat method of determining atomic and molecular masses differs from the others in that the substance must be in a a) gaseous state b) liquid state c) vapour state d) solid state 20. The atomic masses of elements listed in Table 8 are a) exact, actual masses of the elements b) determined from the atomic numbers of the elements c) relative to the mass of a standard element d) assigned a...
DATE: b) Decomposition reaction is the opposite of combination reaction (True/ False) Formation of a precipitate,...
DATE: b) Decomposition reaction is the opposite of combination reaction (True/ False) Formation of a precipitate, formation of a gas and formation of a weak electrolyte are all part of a Double displacement reaction. (True/ False) d) Fe (s) + 2HCl(aq) - FeCl + H2(g), is a Decomposition reaction. (True False) 32. Complete and balance the followings chemical reactions: a) Mg(s) + 02 - b) Cacos - c) CuSO. + Zn - d) AgNO, + NaCl- 33. Classify each of...
18) From the following elements, one is not naturally diatomic molecule b- Nitrogen a-Oxygen d- Copper c- lodine 19...
18) From the following elements, one is not naturally diatomic molecule b- Nitrogen a-Oxygen d- Copper c- lodine 19) In the element Radium Ra, the number of protons, neutrons and electrons are respectively b-88, 88, 226 a- 88, 138, 88 d- 138, 88, 88 c-88, 226, 88 20) The empirical formulas of glucose CaHi:O, is b- CHO a- CiaHaO12 d-CH O c-CH:0 21) The compound NHa is a: b-A polyatomic cation a- A monoatomic cation d-A polyatomic anion c- A...
15) The molecular weight of a gas that has a density of 7.10 g/, at 250...
15) The molecular weight of a gas that has a density of 7.10 g/, at 250 C and 1.00 atm pressure is15) gmol. A) 14.6 B) 5.75 10-3 C) 6.85 10-2 D) 174 E) 28.0 16) 16) Which of the following substance is being reduced in the following reaction.? Cu (s) 2AgNO3 (a) 2Ag (s) Cu(NO312 (aq) D) Cu A) Ag B) AgNO3 i 17) 17) The element X has two naturally occurring isotopes. The masses (amu) and % abundances...
1. The reaction 6f propane with oxygen follows the reaction below: Equation1 ) Balance Equation 1...
1. The reaction 6f propane with oxygen follows the reaction below: Equation1 ) Balance Equation 1 above i) is the above reaction endothermic or exothermic? Enstem i) Classify the reaction above as combination, single displacement, double displacement, decomposition or combustion. comba How much heat was produced in Equation 1 if it can heat 100 g of water from 32 °C? to 40 Is the energy in propane potential or kinetic energy? P。hhi vi) Given that 1 mole of propane produces...
In the lab, a student determines the density of a metal object by measuring its mass...
In the lab, a student determines the density of a metal object by measuring its mass on a balance and its volume by displacement in a graduated cylinder. The data collected by the student is shown. mass of object: 44.701 g volume of water in cylinder before object submersed: 29.47 ml volume of water + object in cylinder: 35.33 mL Calculate the density of the object. d= g/mL Based on the recorded volume data, and assuming that the student used...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? forms coloured compounds conducts electricity when solid can be used has low density as a catalyst X A X X Xx 2. (0620-W 2012-Paper 1/1-Q20) The diagram shows an outline of the Periodic Table. U V W X Y Which of the elements U, V, W, X and Y would react together in the ratio of...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...
please number and write the correct answer Ar have a total pressure of 1.6 bar. What...
please number and write the correct answer
Ar have a total pressure of 1.6 bar. What is the partial 17. A mixture of 100 g of Ne and 10.0 Ne? a) 0.40 bar b) 1.1 bar c) 0.54 bar GP 0.80 bar e) 1.3 bar 18. A sample of N, effuses in 255 s. How long will the same size sample of Cl2 take to effuser c12 a) 388 5 b) 1555 c) 247 s d) 406 5 e) 6455...
Multiple choice
19:11 € Inorganic Chemistry 10060575-E1.pdf 19. The specific-heat method of determining atomic and molecular masses differs from the others in that the substance must be in a a) gaseous state b) liquid state c) vapour state d) solid state 20. The atomic masses of elements listed in Table 8 are a) exact, actual masses of the elements b) determined from the atomic numbers of the elements c) relative to the mass of a standard element d) assigned a...
DATE: b) Decomposition reaction is the opposite of combination reaction (True/ False) Formation of a precipitate, formation of a gas and formation of a weak electrolyte are all part of a Double displacement reaction. (True/ False) d) Fe (s) + 2HCl(aq) - FeCl + H2(g), is a Decomposition reaction. (True False) 32. Complete and balance the followings chemical reactions: a) Mg(s) + 02 - b) Cacos - c) CuSO. + Zn - d) AgNO, + NaCl- 33. Classify each of...
18) From the following elements, one is not naturally diatomic molecule b- Nitrogen a-Oxygen d- Copper c- lodine 19) In the element Radium Ra, the number of protons, neutrons and electrons are respectively b-88, 88, 226 a- 88, 138, 88 d- 138, 88, 88 c-88, 226, 88 20) The empirical formulas of glucose CaHi:O, is b- CHO a- CiaHaO12 d-CH O c-CH:0 21) The compound NHa is a: b-A polyatomic cation a- A monoatomic cation d-A polyatomic anion c- A...
15) The molecular weight of a gas that has a density of 7.10 g/, at 250 C and 1.00 atm pressure is15) gmol. A) 14.6 B) 5.75 10-3 C) 6.85 10-2 D) 174 E) 28.0 16) 16) Which of the following substance is being reduced in the following reaction.? Cu (s) 2AgNO3 (a) 2Ag (s) Cu(NO312 (aq) D) Cu A) Ag B) AgNO3 i 17) 17) The element X has two naturally occurring isotopes. The masses (amu) and % abundances...
1. The reaction 6f propane with oxygen follows the reaction below: Equation1 ) Balance Equation 1 above i) is the above reaction endothermic or exothermic? Enstem i) Classify the reaction above as combination, single displacement, double displacement, decomposition or combustion. comba How much heat was produced in Equation 1 if it can heat 100 g of water from 32 °C? to 40 Is the energy in propane potential or kinetic energy? P。hhi vi) Given that 1 mole of propane produces...
In the lab, a student determines the density of a metal object by measuring its mass on a balance and its volume by displacement in a graduated cylinder. The data collected by the student is shown. mass of object: 44.701 g volume of water in cylinder before object submersed: 29.47 ml volume of water + object in cylinder: 35.33 mL Calculate the density of the object. d= g/mL Based on the recorded volume data, and assuming that the student used...
3.2 Periodic trends 1. (0620-5 2012-Paper 1/2-Q21) Which properties of the element titanium, Ti, can be predicted from its position in the Periodic Table? forms coloured compounds conducts electricity when solid can be used has low density as a catalyst X A X X Xx 2. (0620-W 2012-Paper 1/1-Q20) The diagram shows an outline of the Periodic Table. U V W X Y Which of the elements U, V, W, X and Y would react together in the ratio of...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...
please number and write the correct answer
Ar have a total pressure of 1.6 bar. What is the partial 17. A mixture of 100 g of Ne and 10.0 Ne? a) 0.40 bar b) 1.1 bar c) 0.54 bar GP 0.80 bar e) 1.3 bar 18. A sample of N, effuses in 255 s. How long will the same size sample of Cl2 take to effuser c12 a) 388 5 b) 1555 c) 247 s d) 406 5 e) 6455...
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