Chemistry Solved_Part_29

Chemistry Solved_Part_29 - Week 17 12 Determine the amount...

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

View Full Document Right Arrow Icon
©2010 Digital Interactive Video Education Week 17 86 12) Determine the amount of heat in calories required to raise the temperature of 20.0 g of lead by 30.0° C. 3 pts. 13) What would the Fnal temperature of 30.0 g of water be if you added 1335 cal of heat to it? Assume its initial temperature was 20.0°C. 3 pts. 14) If a silver ring (3.00 g) at 100.0° C was added to 10.0 g of water at 23.0°C, what would the Fnal temperature of the ring and water be? 3 pts. 15) If a piece of aluminum (7.20 g) at 59.0° C was placed in 30.0 g of ethyl alcohol at 19.0° C, what would the Fnal temperature of the aluminum and ethyl alcohol be? 3 pts. cal = CpmΔT 0.038 cal (20.0g)(30.0 o C) = 22.8 cal g o C cal = C p mΔT 1335 = 1(30)ΔT ΔT = 44.5 o C 44.5 + 20.0 = 65.5 o C Cal lost = Cal gained .056(3.00)(100.0-T) = 1(10.0)(T - 23.0) T= 24.3 o C 0.22(7.20)(59-T) = 0.58(30.0)(T-19) T= 22.3 o C
Background image of page 1

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

View Full DocumentRight Arrow Icon
©2010 Digital Interactive Video Education Week 17 87 Laboratory Activity 15 The Heat of Fusion of Water Introduction
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

Chemistry Solved_Part_29 - Week 17 12 Determine the amount...

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