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CHEM-120 Unit 7 Lab Practicum (GRADED A) Questions and Answers | 100% Correct Solution
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CHEM-120 Unit 7 Lab Practicum (GRADED A) Questions and Answers | 100% Correct Solution
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Lab practicum1. If a patient has fever of 103 ◦F, convert it in degree Celsius 103F-.8 = 39.44 C
2. You are given 500 mg NaCl. If it is dissolved in 7.5 mL water what would be the density
in g/mL? 500 NaCL / 7.5 mL = 66.7 g/ml
3. Provide name of the following organic compound
CH3-NH2 Methylamine
4. Provide structural formula of the following organic compound (3 points).
Ethyl amine CH3CH2NH2
5. You are given a pH meter and a series of solutions (solutions A, B and C). When you
measured pH, the results were as follows: pH of solution A= 5.0; pH of solution B= 3.5;
pH of solution C= 8. Rank the solutions from most acidic to least acidic. (6 points)
Solution B > Solution A > Solution C or B, A,C
6. Balance the following reaction (3 points). If the reaction is carried out using 8 moles of KHCO3, how
many moles of K2SO4 will be produced (3 points)?
H2SO4 + KHCO3 K2SO4 + CO2 + H2O
H2SO4 + 2KHCO3 = K2SO4 + 2CO2 + 2H2O
8 moles of KHCO3 will produce 4 moles of K2SO4
8 moles KHCO3 x 1 mole K2SO4/2 mole KHCO3 = 4 moles of K2SO4
7. Based on given atoms or ions, write names and formulas of the compounds (2 points). Identify the
compounds as ionic or covalent A compound made of Barium and phosphate
Formula: Ba3(PO4)2
Name:Barium Phosphate
Ionic Bonds
8. Based on given atoms or ions, write names and formulas of the compounds (2 points). Identify the
compounds as ionic or covalent (1 point).
a. A compound made of one sulfur and six flourines.
Formula: SF6
Name: Sulfur Hexafluoride
Covalent Bond
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