Are the following monoatomic or diatomic a) oxygen b) cesium c) phosphorous d) potassium e) NItrogen f) Iodine
Are the following monoatomic or diatomic a) oxygen b) cesium c) phosphorous d) potassium e) NItrogen...
Which of the following pairs of elements are likely to form ionic compounds: A) helium and oxygen B) magnesium and chlorine C) chlorine and bromine D) potassium and sulfur E) sodium and potassium F) nitrogen and oxygen I believe the answer is d and f Would appreciate a verification and as to why I might be wrong or right instead of a link saying what is an ionic compound thank you
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...
Which of the following elements is NOT a heteroatom? carbon nitrogen phosphorous sulfur oxygen
25. Consider the elements aluminum and oxygen. aluminum охудеn Identify each as a metal or a nonmetal. State the number of valence electrons for each, State the number of electrons that must be lost or gained for each to achieve an octet. Write the symbol, including its ionic charge, and type of each resulting ion. 26. Which of the following pairs of elements are likely to form an ionic compound? Why? Yes/No Why? lithium and chlorine Oxygen and bromine potassium...
Write the formula of each compound. A) Potassium chloride B) Copper (II) phosphate C) phosphorous trichloride D) Sodium hydroxide E) Calcium hydrogen carbonate
6. Write a balanced equation describing each of the following chemical reactions. (a) Solid potassium chlorate, KClO3, decomposes to form solid potassium chloride and diatomic oxygen gas. (b) Solid aluminum metal reacts with solid diatomic iodine to form solid Al2I6. (c) When solid sodium chloride is added to aqueous sulfuric acid, hydrogen chloride gas and aqueous sodium sulfate are produced. (d) Aqueous solutions of phosphoric acid and potassium hydroxide react to produce aqueous potassium dihydrogen phosphate and liquid water.
15. In groundwater, a saturated zone under pressure is also called: a. a confined aquifer b. an unconfined aquifer c. an aquitard d. a vadose zone e. a water table f. a hydraulic gradient 12. The presence of which of the following contributes to acid rain (circle all that apply): a. Oxygen b. Carbon c. Sulfur d. Nitrogen e. Phosphorous f. Potassium
Match the predicted ground state electron configuration with the following elements: a. oxygen b. cesium c. lithium e. d. phosphorus gallium f. lanthanum 6. 1s 2s 2p 3s2 3p6 4s2 3d10 4p6 582 4d10 5p6 652 44 7. 1s2 2s2 2p 3s2 3p™ 452 3dłº 4p1 8. 1s2 2s 2p4 9. 1s 2s 2p™ 352 3p™ 452 3d10 4p6 552 4d10 5p 6s! 10. 1s 2s 2p6 3s 3p3
4. Diatomic nitrogen and oxygen molecules make up about 99% of all molecules in reasonable "unpolluted” dry air a) Evaluate AGⓇ from the following reaction: N2(g) + O2(g) → NO(g) at 298 K. AG°F (NO(g)) = 86.57 kJ/mol. Is the reaction spontaneous? b) Calculate K, at 25 °C for the equilibrium reaction. What does the K, value you obtained indicates about the equilibrium? Does the reaction occurs (for practical purposes) at 25 °C?
Diatomic nitrogen and oxygen molecules make up about 99% of all molecules in reasonable “unpolluted” dry air. a) Evaluate DGo from the following reaction: N2(g) + O2 (g) à NO (g) at 298 K. DGof (NO(g)) = 86.57 kJ/mol. Is the reaction spontaneous?