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Chemistry Multiple Choices Assignment To achieve a complete valence shell, how many electrons must an atom of strontium gain or lose? A. lose 2 B. lose 1 C. gain 1 D. gain 2 Which of these pairs will form ionic bonds?A. N and C B. Na and Cs C. K and Cl D. S and […]
Chemistry Multiple Choices Assignment Which of the following occurs naturally as a diatomic element? A. sodium B. bromine C. silicon D. neon The atomic mass of iron is 55.85 amu. From this we can conclude: A. every iron atom has a mass of 55.85 amuB. every iron atom has 55.85 neutrons C. iron is a […]
Chemistry How many significant figures are in the number 0.0030 g?A. 1 B. 2 C. 4 D. 5 Which of the following is equivalent to 1 �g?A. 1000 ng B. 1000 kg C. 10�3 g D. 1000 mg If the density of a sample is given as 6.57 g/mL, what volume does a 22.5 g […]
Chemistry Assignment Chem 101: Introduction to General Chemistry Quiz #5 100 points possible Due before noon onWednesday, Oct. 8, 2014 Submit answers on moodle. Each question is worth five points. 1. Whencomparing one mol of water with one mol of carbon dioxide, which of the following is true? A. theycontain the same number of atoms […]
Chemistry What is the formula for zinc bromide?A. ZnBr2 B. Zn2Br C. ZnBr3 D. Zn3Br2 Which compound contains both ionic and covalent bonds?A. CH4 B. NaCl C. CO2 D. AlPO4 Which of the following atoms is LEAST electronegative?A. iodine B. chlorine C. bromine D. fluorine The formula for calcium nitrate isA. Ca(NO3)2 B. CaNO3 C. […]
Chemistry Multiple Choices Assignment Chem 101: Introduction to General Chemistry Quiz #7 100 points possible Due before noon onWednesday, Oct. 22, 2014 Submit answers on moodle. Each question is worth five points. 1. Given thefollowing balanced chemical equation, how many mol of oxygen are required for the complete reactionof 2.4 mol of C2H4? C2H4 + […]
Chem 101: Introduction to General Chemistry Quiz #6 100 points possible Due before noon onWednesday, October 15, 2014 Submit answers on moodle. Each question is worth five points. 1. What isthe molar mass of an oxygen molecule? A. 16.00 g/mol B. 32.00 g/mol C. 18.02 g/mol D. 6.022 X 10232.Complete combustion of a hydrocarbon (a […]
Chemistry What is the formula for zinc bromide?A. ZnBr2 B. Zn2Br C. ZnBr3 D. Zn3Br2 Which compound contains both ionic and covalent bonds? A. CH4 B. NaCl C. CO2 D. AlPO4 Which of the following atoms is LEAST electronegative?A. iodine B. chlorine C. bromine D. fluorine The formula for calcium nitrate isA. Ca(NO3)2 B. CaNO3 […]
Chemistry Assignment Chem 101: Introduction to General Chemistry Quiz #5 100 points possible Due before noon onWednesday, Oct. 8, 2014 Submit answers on moodle. Each question is worth five points. 1. Whencomparing one mol of water with one mol of carbon dioxide, which of the following is true? A. theycontain the same number of atoms […]
Chemical Reactions\ Chem 101: Introduction to General Chemistry Quiz #6 100 points possible Due before noon onWednesday, October 15, 2014 Submit answers on moodle. Each question is worth five points. 1. What isthe molar mass of an oxygen molecule? A. 16.00 g/mol B. 32.00 g/mol C. 18.02 g/mol D. 6.022 X 10232.Complete combustion of a […]
