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charlotteduckett

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charlotteduckett

Chemistry Heat Question

A small rock is heated and placed in a foam cup calorimeter containing 20.0 mL of water at 25*C. The water reaches a maximum temperature of 27.2*C. How many joules of heat are released by the rock? if...
15:50 Wed 01st May 20195 answers, last by fiction-factory 07:32 Tue 28th May 2019
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charlotteduckett

Chemistry Lab Question

When 400 J of heat is added to 5.6 g of olive oil at 23*C, the temperature increases to 87*C. What is the specific heat of the olive oil?...
15:46 Wed 01st May 20196 answers, last by fiction-factory 17:10 Tue 07th May 2019
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charlotteduckett

Chemistry Question

You have a cup of tea (250 mL) that is 375 K which is too hot to drink. It needs to be cooled to 350 K before you can drink it. How much thermal energy has to be transferred from the tea to the...
15:35 Wed 01st May 20191 answer, last by JF85 17:12 Wed 01st May 2019
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charlotteduckett

Chemistry

If 10 liters of oxygen at STP (273 k and 1 atm) are heated to 512*C, what will be the new volume of gas if the pressure is also increased to 2.0 atm of mercury?
15:26 Wed 01st May 20191 answer, last by fiction-factory 05:44 Thu 02nd May 2019
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charlotteduckett

Chemistry Question #3

Identify which of the following are redox reactions. If a reaction is a redox reaction, name the element oxidized, the element reduced, the oxidizing agent, and the reducing agent. a. Mg(s)+ Br2(l)...
20:55 Thu 18th Apr 20195 answers, last by Calibax 14:06 Fri 19th Apr 2019
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charlotteduckett

Chemistry Question #2

Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10^-3 mol/L. Is this solution acidic, basic, or neutral? Show your work....
03:32 Wed 17th Apr 20198 answers, last by Old_Geezer 09:50 Wed 17th Apr 2019
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charlotteduckett

Chemistry Question

A 105 g piece of copper wire is heated and the temperature of the wire changes from 25*C to 91*C. The amount of heat absorbed is 645 cal. What is the specific heat of copper? Show all work, including...
03:30 Wed 17th Apr 20195 answers, last by Peter Pedant 06:41 Wed 17th Apr 2019

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