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const2013 [10]
3 years ago
14

Write a balanced formation equation at standard conditions for the compound HI.

Chemistry
2 answers:
allsm [11]3 years ago
8 0
H₂(g) + I₂(s) = 2HI(g)
Montano1993 [528]3 years ago
6 0
<span>H2 + I2 --> 2HI
hope it helps
</span>
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Scientists described light as a wave because the results of many experiments with light demonstrated that light behaves as a wav
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3 years ago
How many grams are there in 3.30x10 23 grams of n2i6
qwelly [4]
Technically, the answer should be 3.30 * 10^23 grams. But I think you mean either molecules, atoms, moles or grams of Ni2I6 with that number of molecules .

1 mole of Ni2 I6  = 6.02 * 10^23 molecules
x  [mole] = 3.30 * 10^23 molecules

1/x = 6.02 * 10^23 / 3.30 * 10^23 Cancel the 10^23 on the right side
1/x = 6.02 / 3.30 Cross multiply
3.30 = 6.02 x Divide by 6.02
3.30 / 6.02 = x 
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what to do from here?

1 mole of Ni2I6 is
2 * Ni = 2 * 59 = 118 grams
6 *  I = 6 * 131 = <u>786 grams</u>
Total  =               904 grams

Set up a proportion.
<u>1 mole Ni2I6 </u>  = <u>904 grams</u>  
0.548 moles    = x

1/0.548 = 904/x Cross multiply
x = 0.548 * 904
x = 495.4 grams of Ni2I6 <<<<<< Answer.

8 0
3 years ago
Which of these are ionic compounds? Check all that apply.
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I think the correct answers from the choices listed above are the first, third and the last option. Ionic compounds are compounds that dissociates into ions when in aqueous solution. From the list, NH4Cl, KF and MgO are the ionic compounds. Hope this answers the question.
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How many liters of CO2 are formed when 14.0 g of CaCO3 react at 1.00 atm and 1000K
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Answer: 11.5

Explanation:

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