Balanced equation - Study guides, Class notes & Summaries

A______________ represents both the identities and the relative quantities of substances undergoing a chemical change. chemical equation The reaction between methane and oxygen yields. carbon dioxide and water Substances undergoing reaction are called _____________, while the substances produced in the reaction are called _____________. reactants, products The relative numbers of reactant and product species are represented by_______________. coefficients Coeffici...

General Chemistry: Atoms First Chapter 6 Chemical Arithmetic: Stoichiometry 6.1 Multiple Choice Questions 1) Which one of the following statements about balanced equations is false? In a balanced reaction A) atoms must be balanced on both sides of the reaction arrow. B) mass must be conserved. C) molecules must be balanced on both sides of the reaction arrow. D) net charge must be balanced on both sides of the reaction arrow. 2) Which one of the following statements about balanced e...

. A sample contains 8 g 8 gramsof a radioisotope that has a half-life of 10 years. How much time is required for the sample to decay until approximately 1 g one gramof the isotope remains in the sample? - ANSWER 30 years is correct. If the half-life of the substance is 10 years, then every 10 years the amount of the isotope is decreased by half. Thus, it requires three half-lives, or 30 years, for the isotope to decay until approximately 1 gone gram remains in the sample. 2. Which of the f...

Edapt Stoichiometry quiz Introduction to General Organic and Biological Chemistry with Lab-Mueller > Unit 3 A B C D If the balanced chemical reaction for the formation of Li2O is 4 Li(s) + O2(g) → 2 Li2O(s), how many molecules of Li2O(s) would you produce if you used up 6 atoms of Li(s)? 12 3 6 2 Review Feedback× Just like following a recipe, we can know how many of an ingredient (reactant) we need to make a specified amount of product according to a recipe (balanced chemi...

SAMPLE CHEMISTRY PLACEMENT EXAM QUESTIONS WITH COMPLETE SOLUTIONS 100% 2023/2024 Answer: Oxygen Aluminum forms a +3 ion. In order for the formula unit Al₂X₃ to be electrically neutral, the element X must form a -2 ion. Nonmetals in the oxygen column do this. Of these elements, only oxygen is a diatomic gas. Aluminum reacts with element X to form a compound with the formula A₂X₃. Element X exists as diatomic molecules, X₂, in the gaseous state at normal temperature and pressure. Elem...

MLS 121 Laboratory Midterm Exam Questions & answers | Best For 2024 Exam 5/20/22, 11:47 AM MLS 121 Laboratory Midterm Exam Student Identification 0 of 0 points Kindly complete the data below. MLS 121 Laboratory Midterm Exam Total points 66/100 Good Day! The MIDTERM examination is a 100-POINT ONLINE EXAM that will utilize a Google Form. It is composed of Multiple Choice questions that is answerable within TWO HOURS ONLY. The examination shall cover Activities 3 and 4. The exam questionnai...

ABCTE- Basic Chemistry Part 2What is a chemical reaction - correct answer a chemical reaction? Some indications of a chemical reaction include what - correct answer a change in temperature, such as in fire, a color change that indicates the presence of a different substance, and the generation of electrical current by a battery. Chemical reactions are written using what - correct answer shorthand similar to a mathematical equation. reactant A + reactant B product C + product D Unli...

What single change to the experimental system would reduce the electric field strength necessary to maintain the oil drop in static equilibrium? ANS- Decreasing the mass of the drop -When the oil drop (with charge -q) is in static eqbm, the electric force it feels, qE upward, is balanced by the gravitational force, mg downward. Thus, qE = mg, so E = mg / q. Don't be confused by the electric field strength in a capacitor, E = V / d. Which of the following equations gives the voltage V ...

To answer this question, you may need access to the periodic table of elements, a calculator, and the equations and charts in the tutorial associated with this question. If 23.6 g of hydrogen gas reacts with 28.3 g of nitrogen gas, what is the maximum amount of product (ammonia, NH₃) that can be produced? [N₂ + 3H₂ --> 2NH₃; N = 14.0 g/mol, H = 1.01 g/mol]  133 g  23.6 g  68.8 g  34.4 g RATIONALE First, write the balanced chemical equation. Then, convert g hydro...

Which of the properties listed below is a characteristic of a liquid but not of a gas? A. It has the ability to flow. B. It maintains its volume in an open container. C. Its molecules are constantly in motion. D. Its volume varies depending on temperature. - Answer- B A 0.100 m3 chamber is filled with oxygen gas at standard conditions (101 kPa at 273 k). Assuming ideal conditions and behavior, what will be the pressure of the gas in the chamber after it is heated to 819 k? A. 34 kPa B....