CHM 1045 Fall 06 Test 1 Week 3 - version 2 -Answers

CHM 1045 Fall 06 Test 1 Week 3 - version 2 -Answers - Name...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Name Recitation #......... CHM 1045 Fall 06 Test 1 Week 3 45minutes 1 What are the SI units (name and abbreviation) for:- Name Abbreviation Time second s Amount of substance mole mol Length meter m 6 2 Decide whether these changes are physical or chemical. a Milk going sour .. chemical b Milk freezing .. physical c milk being used in Cleopatras bath physical 3 3 How many dm 3 are equal to 35278cm 3 ? Give your answer in scientific notation to three significant figures. 1dm 3 = 1000cm 3 so 35278cm 3 = 35278/1000dm 3 = 35.278dm 3 = 3.53 x 10 1 dm 3 to 3sf. 3 4 The density of copper is 7.9 x 10 3 kg/m 3 , what is this density converted to g/cm 3 . (You may like first to convert to g/m 3 and then to g/ cm 3 .) 1kg = 1000g and so 7.9 x 10 3 kg/m 3 = 7.9 x 10 6 g/m 3 . 1m 3 = (100cm) 3 = 1 x 10 6 cm 3 and so 7.9 x 10 6 g/m 3 = 7.9g/cm 3 2 5 A bottle of sherry has a mass, when full, of 926.1g and, when empty, of 213.6g.A bottle of sherry has a mass, when full, of 926....
View Full Document

Page1 / 3

CHM 1045 Fall 06 Test 1 Week 3 - version 2 -Answers - Name...

This preview shows document pages 1 - 2. Sign up to view the full document.

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