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densk [106]
3 years ago
12

How many joules would be absorbed for the water in Problem 1

Chemistry
1 answer:
9966 [12]3 years ago
8 0

Answer:

5000 cal X 4.184 J/cal =

Explanation:

20,920 jules

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Amiraneli [1.4K]
HI 

So, the formula for water is H2O

When you have the same amount of the reactants , hydrogen will be the limiting reactant. 
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A student is instructed to make 1 L of a 2.0 M solution of CaCl2 using dry salt. How should he do this?
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<span>The student should follow following steps to make 1 L of </span>2.0 M CaCl₂.<span>
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1. First he should calculate the number of moles of 2.0 M CaCl</span></span>₂ in 1 L solution.<span>

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2. Find out the mass of dry CaCl</span>₂ in 2 moles.<span>

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Hence, mass of CaCl</span>₂ = 2 mol x <span>110.98 g/mol
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3. Weigh the mass accurately 

4. Then take a cleaned and dry1 L volumetric flask and place a funnel top of it. Then carefully add the salt into the volumetric flask and finally wash the funnel and watch glass with de-ionized water. That water also should be added into the volumetric flask.

5. Then add some de-ionized water into the volumetric flask and swirl well until all salt are dissolved.

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6 0
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a friend is trying to describe a material to you. which of the following is not a description of a physical property of the subs
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The answer for it is C. when you mix it with water it fizzes

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