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igor_vitrenko [27]
4 years ago
6

One degree Celsius indicates the same temperature change as

Chemistry
1 answer:
Harlamova29_29 [7]4 years ago
7 0
B 5/9 degree Fahrenheit
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What does mechanical digestion mean ?
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Explanation:

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4 0
3 years ago
State Hess' law of constant heat summation.
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-74.6 kj/mol

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*
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3 years ago
Nitrogen can ionically bond with an unknown element X from group 2. How many ions of element X are required to create a stable i
Nataliya [291]
I can tell you there certainly is enough information, so we can eliminate the fourth option right away.
Group two elements tend to form 2+ cations, and nitrogen forms 3- anions. To make a stable substance, we need those to cancel out. Calling the group 2 element X:
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8 0
3 years ago
Read 2 more answers
Given the equation 2mg(s) + o2(g) → 2mgo(s) + 72.3 kj, how much heat is involved in the production of 5.0 mol of mgo? question 2
Rudik [331]
The heat is involved   in the  production of 5.0 mol of MgO  is   180 Kj

               calculation

2 Mg (s)   +O2 → 2 MgO

From  the  equation  above two  moles    of MgO  is used  therefore   

72.3   is for   2   moles

that is   72.3  kj =  2moles
                  ?      = 5  moles 

by  cross  multiplication

= 72.3  kj × 5/2     = 180  Kj  
    

7 0
3 years ago
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