How is h2o bonded - Study guides, Class notes & Summaries

Culinary Chemistry Exam 1 Questions and Answers 2024 Graded A. A chemical process of reflux can be used to determine the amount of ______ in foods. - ANSWER Fat _________ are known to build and repair tissue. - ANSWER Proteins The FDA allows for _______ % leeway in information reported on nutrition labels. - ANSWER 5 A cheeseburger from a fast food restaurant contains 19 g of fat, 20 g of carbohydrate, and 28 g of protein. How many kcal of energy does the cheeseburger contain? (The calor...

Biology 1201 Exam 1 Questions and Answers Already Passed About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96% of living matter? Carbon, Hydrogen, Nitrogen, Oxygen What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons? 6 Which of these refers to atoms with the same atomic number but different atomic masses? Isotopes Fluorine's atomic number is 9 and its atomic mass is 19. ...

approximately how much water per day is required to support the lifestyle of the average U.S. citizen, according to the U.S. Geological survey? 100 gallons What is the shape of a water molecule? Bent Rank the following bonds from the most to least polar, starting with the most polar bond at the top of the list. H-F, P-O, C-O, C-H if the sign δ- is used to mark an atom in a covalent bond, it means that _____. (select all the options that complete the sentence correctly.) ...

Bioengernetics - Answer-How energy flows through organisms. ATP - Answer-Used for mechanical, transport, and chemical work. ATP is also an RNA nucleotide. Mechanical Work - Answer-Energy used in motor proteins and muscle cells during contractions. Transport Work - Answer-Energy used to move substances against their gradient. Chemical Work - Answer-Energy used to convey polymers into monomers. Gibs Free Energy - Answer-Portion of a systems energy that can preform work when temperature and p...

covalent bond - Answer-The sharing of a pair of valence electrons by two atoms. (Ex: Hydrogen, oxygen, water, Methane) Polar covalent bond - Answer-When electrons are not equally shared among the atoms within a bond. (Ex: water) This causes a negative and a positive side of a molecule. Hydrogen Bond - Answer-A type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bon...

What is the general formula for a carbohydrate? - Cx(H2O)y How do you determine the number of stereoisomers for a given carbohydrate? - 2^n where n= number of stereocenters Distinguish between the D and L designations for carbohydrates. - In the L form the hydroxy group is on the bottom left closest to the CH2OH group in the frame of a Fischer projection In the D form the OH is on the bottom right What are anomers? - Diastereomers formed by the cyclization of carbohydrates (*note they ...

ACS Gen Chem Practice Exam 77 Questions with Verified Answers Which is the strongest oxidizing agent? N a →← N a + + e - 2 . 7 1 V Cd →← Cd2+ + 2e- 0.40 V H2 →← 2H+ +2e- 0.00V Ag→← Ag++e- -0.80V (A) Na+ (B)H2 (C) Cd0 (D)Ag+ - CORRECT ANSWER Ag+ All are examples of Lewis acid-base reactions except Cu2+(aq) + 4NH3(aq) →← [Cu(NH3)4]2+(aq) HCl(g) + NH3(g) → NH4Cl(s) H+(aq) + OH-(aq) →← H2O(l) 2Na(s) + Cl2(g) → 2NaCl(s) - CORRECT ANSWER 2Na + Cl2 -&gt...

BIO SCI 93 Midterm #1 Exam Questions with Revised Correct Detailed Answers with Rationales Guaranteed Pass What is a hypothesis? - Answers - a testable explanation to a question (can never be proven) What is a prediction? - Answers - a statement about an uncertain event What is an experiment? - Answers - a scientific test (to show if the hypothesis was accepted or rejected), carried out in controlled conditions How is a theory different than a hypothesis? - Answers - a theory is broa...

Chemistry Exam #3Identify each substance as an acid or a base and write a chemical equation showing how it is an acid or a base according to the Arrhenius definition. a.) HNO3 (aq) b.) NH4^+ (aq) c.) KOH (aq) d.) HC2H3O2 (aq) - correct answer a.) acid, HNO3 (aq) ----> H^+ (aq) + NO3^- (aq) b.) acid, NH4^+ (aq) <----> H^+ (aq) + NH3 (aq) c.) base, KOH (aq) ----> K^+ (aq) + OH^- (aq) d.) acid, HC2H3O2 (aq) <----> H^+ (aq) + C2H3O2^- In each reaction, identify the Brons...

Chemistry 101 Ivy Tech Exam Review A+ Score Assured 2024/2025 Chemistry is the study of Correct Answer: the properties and behaviors of matter Matter is .. Correct Answer: the physical material of the universe, it is anything that has mass and occupies space A property is Correct Answer: any characteristic that allows us to recognize any type of matter and to distinguish it from other types Matter is typically found as a Correct Answer: mixture of two or more substances; it is compri...