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dezoksy [38]
3 years ago
14

1. Valcouroceras is a New York State index fossil. Which mountain-building event

Chemistry
1 answer:
ser-zykov [4K]3 years ago
4 0

"Taconian orogeny" mountain-building event  occurred in New York State during the time when Valcouroceras was living in oceans  covering parts of New York State.

<u>Option: C</u>

<u>Explanation:</u>

A timeframe of mountain construction, which ended 440 million years earlier is known as the Taconic orogeny. A tremendous network of mountains developed from eastern Canada down to what is today the US East Coast Piedmont.

As the mountain range deteriorated during the Silurian and Devonian periods, sediments from the mountain range dispersed across the Appalachians and midcontinental North America of today. It took place when a terrane or sequence of terranes i.e volcanic arcs and microcontinents collide with east North America in a subduction zone that dips east.

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3 years ago
pyrite is a mineral composed of 46.5 mass % iron and 53.5 mass % sulfur. determine the empirical formula for calcocite.
padilas [110]

The empirical formula for pyrite is FeS2.

HOW TO CALCULATE EMPIRICAL FORMULA:

  • The empirical formula represents the simplest whole number ratio of constituents element of a compound. The empirical formula of pyrite can be calculated as follows:

46.5 mass % Fe = 46.5g of Fe

53.5 mass % S = 53.5g of S

  • Next, we divide each element's mass value by its molar mass

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  • Next, we divide each mole value by the smallest (0.83mol)

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3 0
1 year ago
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D. Chemical and Physical Properties
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3 years ago
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Which answer correctly ranks the atoms in terms of decreasing electronegativity (the highest electronegativity first)? which ans
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Answer:

O, N, C, H

Explanation:

Electronegativity of an element is the property that combines the ability of its atom to lose or gain electrons. It measures the relative tendency with which the atoms of the element attracts valence electrons in a chemical bond.

On the periodic table, Electronegativity increases across the period but decreases down a group.

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In terms of decreasing electronegativities, the atoms are arranged as:

O N C H

4 0
3 years ago
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