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LuckyWell [14K]
3 years ago
8

Which change of state is shown in the model?

Chemistry
2 answers:
denis23 [38]3 years ago
8 0

Answer:

D

Explanation:

Nitella [24]3 years ago
7 0
D freezing
All the molecules are tight together
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Answer:

132.17 g

Explanation:

The reaction given , in the question is -

    CH₄ (g ) + 4 S ( g ) ---> CS₂ ( g ) + 2H₂S  ( g )

From the reaction , 4 mole of S is required for the production of 1 mole of  CS₂ .

since ,

Moles of  CS₂  = given mass of CS₂ / Molecular weight  of  CS₂

Since ,

the Molecular weight of  CS₂ = 76

Given ,  mass of CS₂ =  72.57 g

Moles of  CS₂ = 72.57  / 76 = 0.95 mol

Since ,

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Mass of S required = 4.13 * 32 = 132.17 g .

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Energy and Temperature Activity Worksheet
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Why would it probably be very difficult to determine the chemical and physical properties of a newly discovered synthetic elemen
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With newly discovered materials, nothing is yet know about them. Scientists don't know how to conduct physical/chemical experiments without damaging the element. Lethal substances or corrosive materials can be set off from combustion or decomposition. It would be difficult to determine the properties because no one knows what the element is made of. Chemical properties are often characterized by <span>reactivity with other chemicals, such as toxicity, coordination number, flammability, enthalpy of formation, the heat of combustion, and <span>oxidation states. It is difficult to measure those things when you have no idea what an element may be giving off. </span></span>
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Answer:

1 B

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#D

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1D

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3C

4A

A,C,A,B

C,A,C,A

C,A,A,B

Explanation:

Easy ive done this brings back memories

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