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Aleksandr [31]
3 years ago
7

Using the information in the table to the right, calculate the enthalpy of combustion of each of the following substances:

Chemistry
1 answer:
elena55 [62]3 years ago
7 0

Answer:

Acetylene: -1,256 kJ/mol

Ethanol: -1,277 kJ/mol

The combustion of 0.25 mol of an unknown organic compound results in the release of 320 kJ of energy. Which of the compounds in the table could be the unknown compound?- Answer: Ethanol

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Examine the equation.
Alisiya [41]

Explanation:

The reaction expression is given as;

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From the balance reaction expression:

 2 mole of hydrogen gas combines with 1 mole of oxygen gas on the reactant side;

This produces 2 mole of water on the product side of the expression.

The product is in liquid form.

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5 0
2 years ago
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olga55 [171]

Procedures that are likely a chemical change are:

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5 0
3 years ago
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Inessa05 [86]

Answer;

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5 0
3 years ago
The molar mass of I2 is 253.80 g/mol, and the molar mass of NI3 is 394.71 g/mol. How many moles of I2 will form 3.58 g of NI3?
Nat2105 [25]
To answer the problem above first we need to find the difference of molar mass of NI3 from I2, 394.71 g/mol - 253.80 g/mol = 140.91 g/mol. Knowing the molar mass of the difference of NI3 from I2, in equation mass (g) / moles (mol) = molar mass, then we substitute. 3.58g / moles = 140.91 g/mol.
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6 0
3 years ago
Which atoms make up a molecule of sodium bicarbonate.
Ratling [72]

Answer:

Its chemical formula is NaHCO3. Its formula consists of one sodium (Na) atom, one hydrogen (H) atom, one carbon (C) atom and three oxygen (O) atoms.

Explanation:

Hope this helps

8 0
2 years ago
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