3 years ago

2 Mg(s) + O2(g) → 2 MgO(s) ΔH = -1204 kJ

1 answer:

5 0

Answer is C because since you are forming bonds, energy is released (exothermic). Since it is exothermic, the products will have lower energy than the reactants.

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gavmur [86]

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3 years ago

Write the symbol for every chemical element that has atomic number greater than 8 and atomic mass less than 25.5 u.

timama [110]

F atomic number 9, mass 19

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2 years ago

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3 years ago

The coolant in automobiles is often a 50/50 % by volume mixture of ethylene glycol, C2H6O2, and water. At 20°C, the density of e

Misha Larkins [42]

Explanation:

Let the volume of the solution be 100 ml.

As the volume of glycol = 50 = volume of water

Hence, the number of moles of glycol = $\frac{mass}{molar mass}$

= $\frac{density \times volume}{molar mass}$

= $\frac{1.1088 \times 50}{62 g/mol}$

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Thus, we can conclude that the expected freezing point is $-33.31^{o}C$ .

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3 years ago

What are the branch-chain Alkanes?

snow_tiger [21]

Answer:

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3 years ago

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