Chem101 - Study guides, Class notes & Summaries

A smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters (depth). What is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm) Select one: A. 1.7 × 105 cm3 B. 34 cm3 C. 58 cm3 D. 3.4 cm3 E. 90 cm3 The correct answer is: 58 cm3 A large pizza has a diameter of 15 inches. Express this diameter in centimeters. (1 in = 2.54 cm) Select one: A. 24 cm B. 18 cm C. 38 cm D. 9.3 cm E. 5.9 cm The correct answer is: 38 cm What is a unifying...

total number of neutrons and protons in an atom; # protons + # electrons p Most nonmetallic elements are found in which block of the periodic table? Positive matter is concentrated in the central core Ernest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by showing that... Potassium Plants use up copious amounts of which alkali metal, preventing most of it from being washed out to sea? 2:1:1:2 What is the ratio of reactants and products in the chemical equation? __N...

Potassium chlorate (used in fireworks, flares, and safety matches) forms oxygen and potassium chloride when heated. KClO3(s) → KCl(s) + O2(g) [unbalanced] What mass of oxygen gas is formed if 26.4 g of potassium chlorate decomposes completely? Select one: A. 6.86 g B. 99.1 g C. 4.60 g D. 10.3 g E. 223 g My Account Question 2 Correct 5.00 points out of 5.00 Question 3 Correct 5.00 points out of 5.00 Ammonia reacts with diatomic oxygen to form nitric oxide and water vapor as ...

Which species will have the greatest absolute entropy at 25°C? Select one: A. C4H10(g) B. H2O(l) C. C2H5OH(l) D. C2H2(g) E. Ne(g) Which is a statement of the second law of thermodynamics? Select one: A. The energy of the universe is constant. B. The energy of the universe is decreasing. C. The entropy of the universe is increasing. D. The enthalpy of the universe is constant. E. The entropy of the universe is constant. My Account Question 3 Correct 5.00 points out of 5.00 Que...

Mass Number - ANSWER-total number of neutrons and protons in an atom; # protons + # electrons p - ANSWER-Most nonmetallic elements are found in which block of the periodic table? Positive matter is concentrated in the central core - ANSWER-Ernest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by showing that... Potassium - ANSWER-Plants use up copious amounts of which alkali metal, preventing most of it from being washed out to sea? 2:1:1:2 - ANSWER-What is the r...

What is the term used for findings that are summarized based on a pattern or trend? a. Law b. Hypothesis c. Theory d. Phenomena e. Prediction a. Law Which of the following is a tentative explanation for a set of observations? Select one: a. Law b. Hypothesis c. Theory d. Phenomena e. Prediction b. Hypothesis

Straighterline CHEM101 Final Exam | Latest Version | 2024/2025 | Rated A+ What is the empirical formula of a compound with the molecular formula C6H12O6? CH2O How do you calculate the number of moles in 5 grams of sodium chloride (NaCl)? Divide the mass of NaCl by its molar mass. Describe the difference between an ionic bond and a covalent bond. An ionic bond involves the transfer of electrons between atoms, creating charged ions, while a covalent bond involves the sharing of ...

Straighterline CHEM101 Final Exam With 100% Correct Answers 2023

Straighterline Intro to Chemistry CHEM101L Lab 2 The Scientific Method COMPLETE Worksheet with LAB PHOTOS (New Version August 2024) Scored 100%