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velikii [3]
3 years ago
15

How to learn stoichiometry

Chemistry
1 answer:
frez [133]3 years ago
3 0
If you go on youtube and do a quick search about stoichiometry it really helps, or you can google "stoichiometry practice" and get wonderful worksheets that walk you through everything
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How much ice (in grams) would have to melt to lower the temperature of 354 ml of water from 26 ?c to 6 ?c? (assume the density o
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Heat gained in a system can be calculated by multiplying the given mass to the specific heat capacity of the substance and the temperature difference. It is expressed as follows:<span>

Heat = mC(T2-T1) 

When two objects are in contact, it should be that the heat lost is equal to what is gained by the other. From this, we can calculate things. We do as follows:

<span>Heat gained = Heat lost</span>
mC(T2-T1) = - mC(T2-T1) 

C(liquid water) = 4.18 J/gC
C(ice) = 2.11 J/gC

</span><span>(354 mL)(1.0 g/mL)(4.18 J/gC)(26 C - 6 C) = m(2.11 J/gC)(6 - 0C) </span><span>
m = 2337.63 g of ice

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3 0
3 years ago
All of the following pairs of ions are isoelectronic except which one?
mash [69]

Answer: Fe2+ & Mn3+

Explanation:

6 0
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A student climbed up the hill at a constant speed, stopped at the top, and then ran quickly down the other side.
Pavlova-9 [17]

Answer:

The Answer Is C

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7 0
3 years ago
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What is the correct order of coefficients to balance this equation?
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Answer:

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The balanced equation for photosynthesis is shown below.
klio [65]
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and the last one also wrong because the total number of O atoms are equal at the two sides but not equal 2.

3 0
3 years ago
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