Answers to chemistry problems
[DOC File]Exercises (Mass Percent) - Chemistry Geek
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Mass Percent) 1. 5.0 grams of sugar are dissolved in 150 g of water What is the mass percent of sugar in the solution? 2. A 200-gram solution of alcohol contains 180 mL of water.
Honors Chemistry Worksheet – Specific Heat
Show ALL equations, significance, units, and work in solving following problems. Use dimensional analysis whenever possible. A 500 g piece of iron changes 7°C when heat is added. How much heat energy produced this change in temperature? When 300. cal of energy is lost from a 125 g object, the temperature decreases from 45.0°C to 40.0°C.
[DOCX File]Chem;GI;Answers
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4.The bond energy (in MJ/mole) is the energy required to break one mole of the specified bonds. Triple bonds share six electrons between two atoms and are stronger (have greater bond energy) than double bonds, which share four electrons between two atoms.
[DOC File]Answers to Stoichiometry Problems - Chemistry and More
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Title: Answers to Stoichiometry Problems Author: jgepner Last modified by: jgepner Created Date: 11/6/2008 1:06:00 AM Company: St Paul Academy Other titles
[DOC File]HEAT Practice Problems
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HEAT Practice Problems . Q = m x ∆T x C . 5.0 g of copper was heated from 20°C to 80°C. How much energy was used to heat Cu? (Specific heat capacity of Cu is 0.092 cal/g °C) How much heat is absorbed by 20g granite boulder as energy from the sun causes its temperature to change from 10°C to 29°C? (Specific heat capacity of granite is 0.1 ...
[DOC File]Density Practice Problems - New Canaan
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Use the density formula to solve the following problems. Show all work and the answer must have the correct units. Remember that volume can have different forms. A block of ice with a volume of 3 cm3 would be 3 mL of liquid after being melted. 1. What is the density of CO gas if 0.196 g occupies a volume of 100 ml? m = 0.196 g D = m/v
[DOC File]Light Problems - FREE Chemistry Materials, Lessons ...
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Answers: 2. 8.3 x 1016 Hz 5b. 5.79 x 1014 Hz 6a. 6.03 x 1014 Hz 7a. 938 Hz 8. 7.047 x 1016 Hz 10. 1.99 x 10–13 J. KEY. Chemistry: Light Problems. Directions: Solve the following problems. Show proper set-up, work, and units for full credit. Box in your final answer. 1. A wave has a frequency of 22 Hz and a wavelength of 4.0 m.
[DOC File]CHEMISTRY WORKSHEET # 2 MOLE PROBLEMS—THE MOLE …
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chemistry worksheet # 6 mixed mole problems (grams, molecules, and liters) You now know three things a mole can be: a molar mass, 6.02 x 1023 molecules and, for a gas, 22.4 liters at STP. We can use this information to convert grams to molecules or liters, molecules to grams or liters, or liters to …
[DOC File]Practice Worksheet for Significant Figures
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Solve the following problems and report answers with appropriate number of significant digits. 1) 6.201 cm + 7.4 cm + 0.68 cm +12.0 cm = 26.3 cm
[DOC File]Density Practice Problems - Anderson 1
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Answers to Density Problems. Return to Density Worksheet. 1) d = 40.5 g / 15.0 mL . d = 2.70 g/mL . 2) d = 306.0 g / 22.5 mL . d = 13.6 g/mL . 3) d = g / mL . g = (d) (mL) g = (0.789 g/mL) (200.0 mL) = 158 g . 4) (8.4 cm) (5.5 cm) (4.6 cm) = 212.52 cm3 . d = 1896 g / 212.52 cm3 = 8.9 g/cm3
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