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ryzh [129]
3 years ago
9

How are igneous rocks classified?

Chemistry
2 answers:
ivolga24 [154]3 years ago
5 0
I think it would be answer 1.
ziro4ka [17]3 years ago
3 0
Pretty sure the answer is 1
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Hof metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the
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Calculate the mass of water produced when 9.57 g of butane reacts with excess oxygen.
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Answer:

14.9 g

Explanation:

Step 1: Write the balanced equation

C₄H₁₀ + 6.5 O₂ ⇒ 4 CO₂ + 5 H₂O

Step 2: Calculate the moles corresponding to 9.57 g of C₄H₁₀

The molar mass of C₄H₁₀ is 58.12 g/mol.

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Step 3: Calculate the moles of H₂O produced from 0.165 moles of C₄H₁₀

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Step 4: Calculate the mass corresponding to 0.825 mol of H₂O

The molar mass of H₂O is 18.02 g/mol.

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4 0
3 years ago
Explain why iron sulfide has different properties from a physical mixture of the elements iron and sulfur?
Ulleksa [173]
"Iron and sulfur are both elements from the periodic table of elements.  As such, each one has its own unique set of physical and chemical properties.  Iron is a metal, while sulfur is a nonmetal.  When these two are heated together, the iron atoms combine with the sulfur atoms to make a compound known as iron sulphide.  A compound is different from elements in that it is made from the chemical union of two or more elements.  Iron sulphide is not iron or sulfur; it is a pure substance with its own set of distinguishing physical and chemical characteristics.  A mixture, on the other hand, is what you get by combining two or more elements, but not chemically combining them.  In the case of the iron and the sulfur, if you mix them and provide no heat, you simply have a mixture of iron and sulfur.  Mixtures are different from compounds in that they are easily separated.  A magnet could be used to separate the iron from the sulfur, because iron is attracted to magnets, while sulfur is not." https://www.enotes.com/homework-help/explain-why-iron-sulphide-compound-not-just-336735 - I hope this helps! :)
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3 years ago
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