What is the molecular formula of a molecule that has an empirical formula of CH_(2)O and a molar mass of 120.12g/mol
State the number of valence electrons for each of the following elements. Sn square
What is the term for a pure substance that cannot be broken down any further by ordinary chemical reaction? homogeneous mixture element compound heterogeneous mixture none of the above
Which of the following groups of elements has the highest ionization energy? Group VIIA/17 Group VIIIA/18 Group IIB/12 Group IA/1 Group IIA/2
What is the current official name for element 108? hassium bohrium seaborgium dubnium none of the above
Which of the following is an example of a chemical change? charring sugar cooking a steak baking a pie boiling an egg all of the above
Which of the following is an example of a physical property? physical state melting point color crystalline form all of the above
What is the term for the weighted average mass of all the naturally occurring isotopes of an element? atomic mass atomic notation mass number atomic number none of the above
Which of the following is an inactive ingredient used as an occlusive skin protectant? Glycerin Lecithin Petrolatum Dimethicone
The solute particles that interfere with vaporization are: Select the correct answer below: in the middle of the solution at the surface of the solution in the gas phase none of the above
Which of the following alcohols will be used in this lab? Butanol Propanol Ethanol Methanol
Acidic dyes work best in low pH environments. are used for staining negatively charged molecular structures. are negatively charged and work best at low pH. are lipid soluble. are negatively charged.
How many protons does carbon have? 40 39.09 6 12
Measurements taken with a spectrometer require a __ to eliminate background readings from components other than what is being measured in the sample. Select one: a. sample b. replicate c. treatment d. blank
11. [Periodic Table and Periodic Law] Which of the following elements has the greatest tendency to attract electrons in a chemical bond? A. Carbon B. Oxygen C. Fluorine D. Nitrogen
-Develop possible solutions - Brainstorming - think of as many solutions as possible of \( \mathrm{CO}_{2} \) wooden car
8. Every chlorine atom has: 7 electrons 17 neutrons a mass number of 35 an atomic number of 17
1. $6P_{4}O_{10}+H_{2}O$ $3H_{3}PO_{4}$
What is the maximum number of electrons that can occupy a given orbital if they have different spins? 4 2 1 3
How will we know how many electrons are in each ATOM? Type your answer here
