chemistry

CHEM 1212 Midterm Review LSU, chem 1212 midterm Questions and Answers | 2026 Update | 100% Correct. Exclamation Point (icon) -Irritant to skin and eyes, skin sensitizer, toxic, respiratory tract irritant Test tubes pouring on metal and hands (icon) -Corrosive to skin and metal Fire (icon) -flammable, emits flammable gasses, pyrophoric O with fire (icon) -oxidizer, oxidizing agent Human body with gas inside (icon) -general health hazard, respiratory sensitizer, carcinogen, organ toxicity ...

Chem 1112 Lab Final Questions and Answers | 2026 Update | 100% Correct. How many pictograms are in the Global Harmonized System? -9 What safety clothing would you wear on a regular basis in the lab (pick all that apply) --Safety glasses/googles -shoes that cover the whole top of your foot -pants that cover your legs Who should you report accidents to? (Pick all that apply) --The instructor -One of the TAs Why is it important that we do not startle other workers in the lab? - Because st...

CHEM 135 Test 2 Questions and Answers | 2026 Update | 100% Correct. highest vapor pressure= lowest IMF Highest BP= highest IMF highest ΔHvap= highest IMF Most viscious highest IMF highest surface tension highest IMF The vapor pressure over a liquid incre

CHEM 134-EXP #1- Exam 1Questions and Answers | 2026 Update | 100% Correct. The Erlenmeyer flask used in the experiment is not well insulated. How does it affect each flow rate calculated from the enthalpy of fusion or from specific heat capacity? Do not mention "inaccurate", "wrong", "inconsistent", "different", etc. Determine if the heat flow rate would be higher or lower. Hint: Consider the direction of heat flow (Chapter 9) Heat will escape from the flask to the surroundings. S...

CHEM 134 REVIEW Questions and Answers | 2026 Update | 100% Correct. enthalpy (H) -measures the total heat within a system ΔH measures the change in enthalpy or the change in heat state -where 'we are' ; the position ex. enthalpy (H) Gibb's Free Energy (G) Temperature (T) path -how to get there; the 'path

Chem 134 quiz Ch 13 (Properties of Solutions) Questions and Answers | 2026 Update | 100% Correct. The process of solute particles being surrounded by solvent particles is known as __________. A) agglutination B) agglomeration C) solvation D) dehydration E) salutation -C) solvation A saturated solution __________. A) cannot be attained B) contains as much solvent as it can hold C) contains dissolved solute in equilibrium with undissolved solid D) contains no double bonds E) will rap...

CHEM 134 Questions and Answers | 2026 Update | 100% Correct. For the reaction below relate the rate of disappearance of hydrogen to the rate of formation of ammonia. N2(g) + 3H2(g) → 2NH3(g) --Δ[H2]/3 Δt = Δ[NH3]/2Δt The elementary steps for the catalyzed decomposition for dinitrogen monoxide are shown below. Identify the catalyst. NO(g) + N2O(g) → N2(g) + NO2(g) 2NO2(g) → 2NO(g) + O2(g) -NO Ozone in the upper atmosphere is important to life on earth because it converts harmfu...

CHEM 134 LECTURE EXAM 1Questions and Answers | 2026 Update | 100% Correct. What is matter? give examples of matter. -anything that takes up space and has mass. ex: you, trees, water, a house, air What is a substance? ex -A form of matter that has a definite (constant) composition and distinct properties (water, ammonia, sugar, table salt) What is a mixture? ex -is a combination of two or more substances in which the substances retain their distinct identities (constant composition throug...

CHEM 134 LECTURE EXAM 1Questions and Answers | 2026 Update | 100% Correct. What is matter? give examples of matter. -anything that takes up space and has mass. ex: you, trees, water, a house, air What is a substance? ex -A form of matter that has a definite (constant) composition and distinct properties (water, ammonia, sugar, table salt) What is a mixture? ex -is a combination of two or more substances in which the substances retain their distinct identities (constant composition throug...

CHEM 134 LECTURE EXAM 1 Questions and Answers | 2026 Update | 100% Correct. What is matter? give examples of matter. -anything that takes up space and has mass. ex: you, trees, water, a house, air What is a substance? ex -A form of matter that has a definite (constant) composition and distinct properties (water, ammonia, sugar, table salt) What is a mixture? ex -is a combination of two or more substances in which the substances retain their distinct identities (constant composition throu...