Chem 1411 Sample Final Exam

Chem 1411 Sample Final Exam - CHEM 1411 Sample Final Exam...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEM 1411 Sample Final Exam Name: Score Part I. Multiple choice questions. ( 2 points each) Direction- Please write your correct choice in space provide. ___1. Perform the following calculations and round off the answers to the proper significant figures 0.3614 x 2.75 = A. 0.99385 B. 0.994 C. 0.99 D. 1.00 ____ 2. Which of the following expressed measurement 75,030.2 m in correct scientific notation? A. 7.50302x10 4 m B. 7.503x10 4 m C. 7.50x10 4 m D. 7.5x10 4 m ____ 3. What are the atomic number, Mass number, and number of electrons in 109 Ag + ? A. 47, 109, 46 B. 109, 47, 47 C. 109, 156, 156 D. 47, 109, 47 ____4. What are the correct symbols for the elements (1) copper and (2) cobalt? A. Co, CO B. Cu, Cb C. Cp, Cb D. Cu, Co ____5. How many nitrogen atoms are in 175 molecules of Cu(NO 3 ) 2 A. 800 B. 200 C. 350 D. 400 ------6. What is the equivalent of 130 K in degrees Fahrenheit? A. - 225 B. - 200 C. 328 D. 54 -------7. Which of the following atoms has mass number 17, proton number 8, neutron number 9, electron number 10 A. 17 Cl 35 (-1 charge) B. 8 O 17 (-2 charge) C. 8 O 18 (-2 charge) 4. 8 O 17 -------8. How many moles are in 112 g of anesthetic ethyl chloride (C 2 H 5 Cl) A. 0.578 B. 1.74 C. 2.14 D. 1.12
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
-------9. How many grams of copper can be produced from 160 g of CuO A. 32 g B. 200 g C. 128 g D. 80 -------10. The empirical formula of a compound is C 2 H 4 O, and the weight of 1 mole of that compound is 88 g. What is its molecular formula? A. C 2 H 4 O B. C 4 H 8 O 2 B. C 6 H 12 O 3 C. C 8 H 16 O 4 ------11. Molecules that undergo complete dissociation to form OH - in water are called A. Weak acid B. Strong Base C. Strong acid D. Weak Base ------12. A 100 ml solution is made by dissolving 890 mg of NaCl salt in Water.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

Chem 1411 Sample Final Exam - CHEM 1411 Sample Final Exam...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online