Homework Help is Here – Start Your Trial Now!
Science
Chemistry
1) The number with the most significant zeros is A) 250000001 B) 0.00002510 C) 2.5100000 D) 0.02500001 E) 2.501 x 10-7

1) The number with the most significant zeros is A) 250000001 B) 0.00002510 C) 2.5100000 D) 0.02500001 E) 2.501 x 10-7

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
See similar textbooks
icon
Related questions
Question

general chemistry , please solve question 1

1) The number with the most significant zeros is A) 250000001 B) 0.00002510 C) 2.5100000 D) 0.02500001 E) 2.501 x 10-7 2) The correct name for HNO2 is, C) nitric acid E) hydrogen nitrate A) nitrous acid B) pernitric acid D) hyponitrous acid 3) Calculate the percentage by mass of hydrogen in PICI2(NH3)2. A) 1.008 B) 0.034 C)1.558 D) 0.672 E) 2.016 4) What mass in grams of hydrogen is produced by the reaction of 4.73 g of magnesium with 1.83 g of water? Mg (s) + 2H20 (1) - Mg(OH)2 (s) + H2 (g) A) 0.102 B) 0.204 C) 0.0485 D) 0.219 E) 0.0162 5) How many moles of Nat are present in 343 ml. of a 1.27 M solution of Na2SO4? A) 1.31 B) 0.436 C) 0.871 D) 11.1 E) 3.70 6) Which of the following is not part of the kinetic-molecular theory? A) Atoms are neither created nor destroyed by ordinary chemical reactions. B) The volume occupied by all of the gas molecules in a container is negligible compared to the volume of the containe C) Gases consist of molecules in continuous, random motion. D) Collisions between gas molecules do not result in the loss of energy. E) Attractive and repulsive forces between gas molecules are negligible. 7) The value of AH° for the reaction below is-72 kJ. H2 (g) + Br2 (g) kJ of heat are released when 80.9 grams of HBr is form this reaction. + 2HBR (g) B) 0.44 C) 72 D) 36 E) 144 A) -72 8) Which one of the following is not a valid value for the magnetic quantum number of an electron in a 5d subshell C)3 D)-1 E) 0 A) 1 B) 2 9) Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar? A) Si > P > Ar > Na > Mg B) Na > Mg > Si > P > Ar C) Ar > P > Si > Mg > Na D) Ar > Si > P > Na > Mg E) Mg > Na > P > Si > Ar 10) Of the choices below, which gives the order for first ionization energies? A) Ga > Ge > Se > Br > Kr B) Kr > Se > Br > Ga > Ge C) Ga > Br > Ge > Kr > Se D) Kr > Br > Se > Ge > Ga E) Br > Se > Ga > Kr > Ge 1
Transcribed Image Text:1) The number with the most significant zeros is A) 250000001 B) 0.00002510 C) 2.5100000 D) 0.02500001 E) 2.501 x 10-7 2) The correct name for HNO2 is, C) nitric acid E) hydrogen nitrate A) nitrous acid B) pernitric acid D) hyponitrous acid 3) Calculate the percentage by mass of hydrogen in PICI2(NH3)2. A) 1.008 B) 0.034 C)1.558 D) 0.672 E) 2.016 4) What mass in grams of hydrogen is produced by the reaction of 4.73 g of magnesium with 1.83 g of water? Mg (s) + 2H20 (1) - Mg(OH)2 (s) + H2 (g) A) 0.102 B) 0.204 C) 0.0485 D) 0.219 E) 0.0162 5) How many moles of Nat are present in 343 ml. of a 1.27 M solution of Na2SO4? A) 1.31 B) 0.436 C) 0.871 D) 11.1 E) 3.70 6) Which of the following is not part of the kinetic-molecular theory? A) Atoms are neither created nor destroyed by ordinary chemical reactions. B) The volume occupied by all of the gas molecules in a container is negligible compared to the volume of the containe C) Gases consist of molecules in continuous, random motion. D) Collisions between gas molecules do not result in the loss of energy. E) Attractive and repulsive forces between gas molecules are negligible. 7) The value of AH° for the reaction below is-72 kJ. H2 (g) + Br2 (g) kJ of heat are released when 80.9 grams of HBr is form this reaction. + 2HBR (g) B) 0.44 C) 72 D) 36 E) 144 A) -72 8) Which one of the following is not a valid value for the magnetic quantum number of an electron in a 5d subshell C)3 D)-1 E) 0 A) 1 B) 2 9) Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar? A) Si > P > Ar > Na > Mg B) Na > Mg > Si > P > Ar C) Ar > P > Si > Mg > Na D) Ar > Si > P > Na > Mg E) Mg > Na > P > Si > Ar 10) Of the choices below, which gives the order for first ionization energies? A) Ga > Ge > Se > Br > Kr B) Kr > Se > Br > Ga > Ge C) Ga > Br > Ge > Kr > Se D) Kr > Br > Se > Ge > Ga E) Br > Se > Ga > Kr > Ge 1
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Measurement
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS