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vesna_86 [32]
4 years ago
14

Predict whether each of the following oxides is ionic or molecular: SnO2, Al2O3, CO2, Li2O, Fe2O3, H2O

Chemistry
2 answers:
Murljashka [212]4 years ago
8 0

Answer:

SnO2, Fe2O3,Al2O3,Li2O- ionic

CO2,H2O- molecular

Explanation:

Ionic oxides are formed between oxygen and a metal. The bonds of oxygen to nonmetallic elements often lead to the formation of molecular oxides as seen above.

KatRina [158]4 years ago
3 0

Answer:

Explanation:

Ionic compounds are formed by combining a metal and a nonmetal.

Molecular compounds are formed by two or more nonmetals.

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Answer: You have 19.808 grams of Oxygen gas.

See picture for explanation.

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Which is the first element in the periodic table to have an electron configuration in the 4th energy level? beryllium carbon pot
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titanium electronic configuration

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5 0
3 years ago
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Consider the following balanced thermochemical equation for a reaction sometimes used for H₂S production: 1/8 S₈(s) + H₂(g) → H₂
castortr0y [4]

ΔH = -15.78 KJ when 25.0 g of S₈ reacts.

<h3>What is Balanced Chemical Equation ?</h3>

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

The given reaction balanced equation is:

1/8 S₈(s) + H₂(g) → H₂S(g)       ΔH = -20.22kj

Now,

When 1 mol will react, then ΔH = -20.2 × 8

                                                   = -161.6 KJ

When 1 mol of S8 = 8 × 32 g

                             = 256 g

When 256g of S8 react ΔH = -161.6 KJ

When 1 g reacts, ΔH = \frac{-161.6}{256}

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When 25 g reacts, ΔH = - 0.63125 × 25

                                     = -15.78 KJ

Thus from the above conclusion we can say that ΔH = -15.78 KJ when 25.0 g of S₈ reacts.

Learn more about the Balanced chemical equation here: brainly.com/question/26694427

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4 0
2 years ago
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igor_vitrenko [27]

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The 3rd one is correct

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Protons and neutrons have approximately the same mass, about 1.67 × 10−24 grams, which scientists define as one atomic mass unit (amu) or one Dalton. Each electron has a negative charge (−1) equal to the positive charge of a proton (+1). Neutrons are uncharged particles found within the nucleus.

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Explain what happens to the heat that is being added to a substance when the substance is changing phase.
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<span>When a substance changes from one state, or phase, of matter to another we say that it has undergone a change of state, or we say that it has undergone a change of phase. For example, ice melts and becomes water; water evaporates and becomes water vapor.These changes of phase always occur with a change of heat. Heat, which is energy, either comes into the material during a change of phase or heat comes out of the material during this change. However, although the heat content of the material changes, the temperature does not.</span>

 

4 0
3 years ago
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