Blog

A construction company is preparing to bid on a new project. The estimating team estimated material, labor, and equipment costs at $500,000, $300,000, and $200,000, respectively. The site and office overhead costs are expected to be $100,000. Eventually, the company submitted a $1,000,000 bid for this project. Answer the following questions: Important Notes: You may use the same answer multiple times. Values between parentheses are negative dollar amounts.

Which substance is reduced in this redox equation? ​ HF + Cl2 → F2 + HCl

Which of these substances is a base?

Which of these are properties of bases? I. They are sour in taste. II. They turn red litmus paper blue. III. They dissolve many metals. IV. They feel slippery.

Which of these substances is an acid?

Which of these factors does not affect the melting point of a substance?

Which of these are oxidation-reduction reactions? I. 3H2 + N2 → 2NH3 II. Cu2O + C → 2Cu + CO III. Fe2O3 + 3CO → 2Fe + CO2 IV. 2K + Br2 → 2KBr

Which of these statements about liquids is/are correct? I. Increased molecular motion results in increased rate of evaporation. II. Liquids take the shape of their container. III. Liquids have relatively low compressibility compared to gases.

Which substance is reduced in this redox equation? ​ HF + Cl2 → F2 + HCl

During oxidation-reduction reactions, the substance that loses electrons is _____and the substance that gains electrons is _____.