Homework Answers
14. 21 atoms (d) is correct
15. Liquid to gas process is called vaporization (d) is correct
16.K = 273-186 = 87 K .(b) is correct
17. (C) is correct. Isotopes differ in number of Neutroms
18.(a) is correct.it is ionizaioni energy.
19.(d) is correct. Elements having incomplete d sub-shell are transtiotr metal
20.(c) is correct option
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Numbers 14-20 please
14. Dynamite is made from TNT and cellulose paper. If the fomuln ori...
Chemistry 1010 Test for Chapters 1-2-3-4 Name Several scientists made contributions to our present day understanding...
Chemistry 1010 Test for Chapters 1-2-3-4 Name Several scientists made contributions to our present day understanding of the atom. Below are the names of 5 of these scientists. PICK OUT ANY 3 OF THES AND STATE WHAT THEIR CONTRIBUTION WAS. Democritus- Roentgen - Bohr- Heisenburg- JJ Thomson The following questions are multiple choice. Write or type in an X beside the answer you think is correct. 1. What is the term for the number of protons in the nucleus of...
What is the formula for an ionic compound made of barium and nitrogen? A) BaN B)...
What is the formula for an ionic compound made of barium and nitrogen? A) BaN B) Ba_3N_2 C) Ba_2N_4 D) Ba_2N_3 E) none of the above Carbon monoxide is considered which of the following? A) molecular element B) ionic compound C) atomic element D) molecular compound E) none of the above Ammonium fluoride is considered which of the following A) B)
Worksheet Chapter 6.1 Periodic Trends 1. Select the element with the highest ionization energy Name Date...
Worksheet Chapter 6.1 Periodic Trends 1. Select the element with the highest ionization energy Name Date a F b. Ne d. Ar e. He 2. Which alkali metal is expected to have the smallest ionization energy? c. CI a. Li b. Na d. Cs e. Fr 3. Which of the following would be expected to have the smallest atomic size? c. Rb a. K c. Rb d. Sr e. Cs 4. Which of the following would be expected to have...
C) 5 D) 14 E) none of the above Which element is represented by the electron...
C) 5 D) 14 E) none of the above Which element is represented by the electron configuration 18282p? A) B) 0 C) Be D) He E) none of the above 46. What is the electron configuration for Ga? A) 1822p%3s 3p%4s 4d104p! B) 1s2 s2p 3s 3p 3d104824p 1s 2s 2p 3s 3p64523d104p! D) 152s 2p 3s 3p%3d104s24p! E) none of the above 47. What is the element in which at least one electron is in the d-orbital? A) Ar...
What is the pH of a 0.0200 M HCI solution? a. < 0 b. 0.70 c....
What is the pH of a 0.0200 M HCI solution? a. < 0 b. 0.70 c. 1.70 d. 12.4 e. 13.3 What volume 3.0 M HNO_3 (aq) must be diluted to make 4.0 L of 0.20 M HNO_3 (aq)? a. 0.01. b. 0.15 L. c. 0.20 L. d. 0.27 L. e. 2.4 L. Which of these physical changes would involve the release of energy? a. condensing a gas b. boiling a liquid c. melting a solid d. all of the...
QUESTION #13 14. The backscattered signal differs from the secondary signal in: a. representing m...
scanning electron microscopy practice packet 3
QUESTION #13 14. The backscattered signal differs from the secondary signal in: a. representing mainly the low-energy electrons b. coming from a greater depth in the specimen c. representing information from both the light and dark sides of sample features d. responding to the potential difference between the sample and the detector e. both b. and d. 15. Fields are used in the scanning electron microscope to: a. generate the high voltage b. position...
please help Which of the following increase as you proceed down a group in the periodic...
please help
Which of the following increase as you proceed down a group in the periodic table? a) atomic radius b) ionization energy c) electron affinity d) electronegativity e all of the above 5. Which of the following could not be an orbital diagram for an atom in its ground state? 1s 2s 2p 3s a) (1) (TD (TD b) (1) (1) (1) (1) (1) (1) c) (1) (1) (1) (10 ) d) ( () (0(() () e) (1) (1)...
19) How many of each type of atom are there in the formula Ca3(PO4)2? A) Ca...
19) How many of each type of atom are there in the formula Ca3(PO4)2? A) Ca = 3, P = 1,0 = 4 B) Ca 3, P = 2, O = 4 C) Ca = 3, P = 2,0=8 D) Ca = 3, P = 1,0 = 8 E) none of the above le Ol be 20) What is the correct formula of a compound that has ten oxygen atoms and four phosphorus atoms? A) O10P4 B) 100P4 C) 4P010...
a. 4.0 km b. 3.40 km c. 250 km d. 0.25 km e. none 12. Convert...
a. 4.0 km b. 3.40 km c. 250 km d. 0.25 km e. none 12. Convert 375 pounds to kilograms. a. 826 kg b. 14.0 kg c. 170 kg d. 82 kg e. none 13. Express 12 km/L in mi/gal a. 7.0 mi/gal b. 28 mi/gal c. 31 mi/gal d. 73 mi/gal f. 32 mi/gal 14. How many minutes will it take for a car that is travelling 8.0 x 10 mi/h to travel 200 km? a. 93 min b....
You have two solid rectangular "prisms" made of pure elements. The face area of each prism...
You have two solid rectangular "prisms" made of pure elements. The face area of each prism 1 cm2 and each prism has the same mass (15 g). The length of prism A (metallic, grayish white in color) is 2.8 cm and for prism B (metallic, silvery gray in color) is 3.3 cm. The element in prism A has an atomic weight of 73 while prism B's element has an atomic weight of 48. Both samples are at the same temperature...
Chemistry 1010 Test for Chapters 1-2-3-4 Name Several scientists made contributions to our present day understanding of the atom. Below are the names of 5 of these scientists. PICK OUT ANY 3 OF THES AND STATE WHAT THEIR CONTRIBUTION WAS. Democritus- Roentgen - Bohr- Heisenburg- JJ Thomson The following questions are multiple choice. Write or type in an X beside the answer you think is correct. 1. What is the term for the number of protons in the nucleus of...
What is the formula for an ionic compound made of barium and nitrogen? A) BaN B) Ba_3N_2 C) Ba_2N_4 D) Ba_2N_3 E) none of the above Carbon monoxide is considered which of the following? A) molecular element B) ionic compound C) atomic element D) molecular compound E) none of the above Ammonium fluoride is considered which of the following A) B)
Worksheet Chapter 6.1 Periodic Trends 1. Select the element with the highest ionization energy Name Date a F b. Ne d. Ar e. He 2. Which alkali metal is expected to have the smallest ionization energy? c. CI a. Li b. Na d. Cs e. Fr 3. Which of the following would be expected to have the smallest atomic size? c. Rb a. K c. Rb d. Sr e. Cs 4. Which of the following would be expected to have...
C) 5 D) 14 E) none of the above Which element is represented by the electron configuration 18282p? A) B) 0 C) Be D) He E) none of the above 46. What is the electron configuration for Ga? A) 1822p%3s 3p%4s 4d104p! B) 1s2 s2p 3s 3p 3d104824p 1s 2s 2p 3s 3p64523d104p! D) 152s 2p 3s 3p%3d104s24p! E) none of the above 47. What is the element in which at least one electron is in the d-orbital? A) Ar...
What is the pH of a 0.0200 M HCI solution? a. < 0 b. 0.70 c. 1.70 d. 12.4 e. 13.3 What volume 3.0 M HNO_3 (aq) must be diluted to make 4.0 L of 0.20 M HNO_3 (aq)? a. 0.01. b. 0.15 L. c. 0.20 L. d. 0.27 L. e. 2.4 L. Which of these physical changes would involve the release of energy? a. condensing a gas b. boiling a liquid c. melting a solid d. all of the...
scanning electron microscopy practice packet 3
QUESTION #13 14. The backscattered signal differs from the secondary signal in: a. representing mainly the low-energy electrons b. coming from a greater depth in the specimen c. representing information from both the light and dark sides of sample features d. responding to the potential difference between the sample and the detector e. both b. and d. 15. Fields are used in the scanning electron microscope to: a. generate the high voltage b. position...
please help
Which of the following increase as you proceed down a group in the periodic table? a) atomic radius b) ionization energy c) electron affinity d) electronegativity e all of the above 5. Which of the following could not be an orbital diagram for an atom in its ground state? 1s 2s 2p 3s a) (1) (TD (TD b) (1) (1) (1) (1) (1) (1) c) (1) (1) (1) (10 ) d) ( () (0(() () e) (1) (1)...
19) How many of each type of atom are there in the formula Ca3(PO4)2? A) Ca = 3, P = 1,0 = 4 B) Ca 3, P = 2, O = 4 C) Ca = 3, P = 2,0=8 D) Ca = 3, P = 1,0 = 8 E) none of the above le Ol be 20) What is the correct formula of a compound that has ten oxygen atoms and four phosphorus atoms? A) O10P4 B) 100P4 C) 4P010...
a. 4.0 km b. 3.40 km c. 250 km d. 0.25 km e. none 12. Convert 375 pounds to kilograms. a. 826 kg b. 14.0 kg c. 170 kg d. 82 kg e. none 13. Express 12 km/L in mi/gal a. 7.0 mi/gal b. 28 mi/gal c. 31 mi/gal d. 73 mi/gal f. 32 mi/gal 14. How many minutes will it take for a car that is travelling 8.0 x 10 mi/h to travel 200 km? a. 93 min b....
You have two solid rectangular "prisms" made of pure elements. The face area of each prism 1 cm2 and each prism has the same mass (15 g). The length of prism A (metallic, grayish white in color) is 2.8 cm and for prism B (metallic, silvery gray in color) is 3.3 cm. The element in prism A has an atomic weight of 73 while prism B's element has an atomic weight of 48. Both samples are at the same temperature...
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