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IceJOKER [234]
3 years ago
6

What is the empirical formula for a compound that is 69.8% Fe and 30.2% 0?

Chemistry
1 answer:
alex41 [277]3 years ago
4 0

Answer:

Fe2O3

Explanation:

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John finds a rock that contains large, light-colored mineral crystals. the rock shows no sign of being altered by heat or pressu
cupoosta [38]

From the above statement, John can infer that the rock underwent metamorphism and also is not altered by heat or pressure.

<u>Explanation</u>:

  • Metamorphic rock is an igneous sedimentary rock and although when put through heat the rock becomes hot but does not alter its shape or melt. If the rock melts then it is only an igneous rock and not a sedimentary one.
  • During metamorphism, the chemical and the mineral content of prolith are changed due to changes in the environment based on physical and chemical conditions.
  • Even though the rocks remain solid, fluid is present between the macroscopic spaces.
  • This gives "The Geologist" accurate information of what happens beneath the earth during the formation of mountains.
  • Metamorphic rocks are like probes that go down the earth and comes back giving information of what happens underneath the surface.
4 0
3 years ago
Suppose that 0.25 mole of gas C was added to
Juli2301 [7.4K]

Answer:

Pi = 0.25[P(TTL)/n(TTL)]

Explanation:

Let Total Pressure = P(TTL) and Total moles =n(TTL) => n(i)/n(TTL) = P(i)/P(TTL)

Given n(i) = 0.25 => Pi = 0.25[P(TTL)/n(TTL)]

6 0
4 years ago
A 25.0 sample of liquid has a mass of 22.1 grams what's the liquids density
lyudmila [28]

The density of the liquid is 0.884 g/mL.

<em>Density = mass/volume</em> =  22.1 g/25.0 mL = 0.884 g/mL

7 0
4 years ago
What was the significance of Thompson’s Plum Pudding model of the atom?
Pani-rosa [81]

The Plum Pudding Model is a model of atomic structure proposed by J.J. Thomson in the late 19th century. Thomson had discovered that atoms are composite objects, made of pieces with positive and negative charge, and that the negatively charged electrons within the atom were very small compared to the entire atom.


6 0
4 years ago
Consider the following selected postulates of Dalton's atomic theory: (i) Each element is composed of extremely small particles
slega [8]

Answer:

B)

Explanation:

Dalton was the first scientist to propose an atomic model. He said that each element is composed of extremely small particles called atoms, which are indivisible, atoms of a given element are identical, and atoms of different elements have different properties.

With the advance of the studies, it was proven that elements are composed of small particles, atoms and that the atoms of each element are identical, and have different properties from atoms of different elements.

But, now we know that the atom can be divisible: it's formed by electrons, protons, and neutrons. So only postulate <em>ii</em> is no longer considered valid.

4 0
3 years ago
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