Personal Protective Equipment (PPE) in a laboratory setting may include (select ALL that apply): A A lab coat B Goggles C Open toe shoes D Gloves

Part 1: Changing the amount of Solute Solvent STEP 1: Add solute to the water by "shaking" the drink mix Make sure the concentration meter is in the water so you can read the number and unit. $\square $ $\square $

Part 4: Chemistry Experiment 2 - Vinegar and Baking Soda Reaction Scenario: You want to see if changing the amount of vinegar affects the size of the gas bubble produced when mixed with baking soda. Questions: What is the independent variable? __ What is the dependent variable? __ What are two controlled variables? __ What would be a good hypothesis for this experiment? Which group is the experimental group? __ Is there a control group? If yes, which one?If not, suggest one.

How many moles are there in 82.5 grams of iron? $4.97\times 10^{25}$ 0.677 1.48 55.85 none of the above

The polarity of a compound is dependent upon __ A. the presence of polar bonds B. the shape of the molecule C. the surrounding molecules A and B A C B A and C

Based on molecular orbital theory, the bond order of the H-H bond in the $H_{2}^{+}$ ion is __ $1/2$ $3/2$ 2 1

What would be the bond angle if the molecular geometry were linear? You may use your Molecular Geometry Chart if needed. 180 120 45 90

What is a molecule that can act as a proton donor classified as? a base neutral an acid

Which of the following additives are designed to help protect the seals inside a transmission and cause the seals to swell slightly to help prevent leaks and clutch slippage? A Antifoam B Seal conditioners C Viscosity modifiers D Detergent

Given the reaction below, which is being reduced? $Mg+Cl_{2}\rightarrow Mg^{2+}+2Cl^{-}$ $2Cl^{-}$ $Cl_{2}$ Mg

What is the purpose of a limestone scrubber? a. to burn coal more efficiently b. to remove sulfur from coal c. to convert $SO_{2}$ to carbonic acid d. to remove sulfuric acid from flue gases