practice questions for exam1 4A

practice questions for exam1 4A - Practice Problems for...

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

View Full Document Right Arrow Icon
0 Practice Problems for Exam #1 1. How many milliseconds are in 0.25 Ms? 2. What is the mass of one atom of sulfur, in grams? 3. What is the full atomic symbol for the isotope that has 25 protons, 23 electrons, and 30 neutrons? 4. Body temperature is 98.6 °F. What is this temperature in Kelvin? 5 . How many moles of H 2 O can be made from 4.50 moles of O 2 and 5.00 moles of H 2 ? The balanced equation is 2H 2 (g) + O 2 (g) --> 2H 2 O(g) 6. Fill in each blank with the letter of the term(s) below (in bold) that fits. air ______ charcoal burning ______ wax melting ____ Fe 2 O 3 ______ iron _______ pumpkin _______ a) homogeneous mixture b)nonmetal c) compound d) heterogeneous mixture e) physical change f) chemical change g) alkaline earth metal h) alkali metal m) transition metal 7. What is the mass percentage of carbon in glucose, C 6 H 12 O 6 ? 8. A 2.0 lb metal block measures 2.32 inches on each side. What is its density in g/cm 3 ?
Background image of page 1

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

View Full DocumentRight Arrow Icon
1 9. Barium metal, Ba(s), reacts with hydrochloric acid to produce barium chloride and
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 / 3

practice questions for exam1 4A - Practice Problems for...

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