Gasoline, paints, thinners solvents, natural gas acetylene are all examples of potential: A. Toxic hazards. B. Flammable hazards. C. Combustible hazards. D. All of the above. E. None of the above.
Trans fats and partially hydrogenated oils are the same thing. False True
Determine which type of property each statement describes by typing "physical or "chemical" in the blank. Hydrogen is a colorless tasteless, and odorless gas. square Hydrogen is very combustible in the presence of oxygen. square Hydrogen is very reactive with most elements. square Hydrogen is the least dense of all elements. square
Consider the reaction of nitrogen dioxide with chlorine to give nitryl chloride, NO_(2)Cl. The average rate of change of NO_(2) is -5.20times 10^-8M/s What is the average rate of change of nitryl chloride? 2NO_(2)(g)+Cl_(2)(g)arrow 2NO_(2)Cl(g) -1.04times 10^-7M/s 1.04times 10^-7M/s -5.20times 10^-8M/s 5.20times 10^-8M/s
A glass container was initially charged with 3.30 mol of a gas sample at 4.00 atm and 21.7^circ C . Some of the gas was released as the temperature was increased to 30.1^circ C so the final pressure in the container was reduced to 1.25 atm. How many moles of the gas sample are present at the end?
What is enthalpy? A. Enthalpy is the mass involved in a reaction. B. Enthalpy is the heat involved in a reaction. C. Enthalpy is the temperature of a reaction. D. Enthalpy is the kinetic energy of a system.
Mark the following statements as True or False. A safe procedure to heat a chemical in a test tube is to place the test tube in a hot-water bath. True False
Calculate the number of moles in 100.0 g of each of the following compounds. Be sure each of your answer entries has the correct number of significant figures. Part 1 of 3 MgSO_(4) square mol MgSO_(4) Part 2 of 3 NaAl(SO_(4))_(2) square molNaAl(SO_(4))_(2) Part 3 of 3 NH_(3) mol NH_(3)
How many CaCl_(2) formula units are in 125 u of calcium chloride? 0.888 formula units 1.25 formula units 1.00 formula units 3.75 formula units 1.13 formula units
Calculate the change in heat when 10.00 gof water vapor (steam) at 100.0^circ C condenses to liquid water and then cools to 15.00^circ C square J
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
