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4 years ago

Which of these minerals and mineral resources is composed of the remains of ancient marine organisms

Chemistry

2 answers:

storchak [24]4 years ago

4 0

Petroleum is the answer to your question

Ivenika [448]4 years ago

4 0

<h3><u>Answer;</u></h3>

Petroleum

<h3><u>Explanation</u>;</h3>

<em><u>Petroleum is a fossil fuel that has formed beneath the surface of the Earth over eons. The remains of ancient plants and animals have been buried and compressed beneath thousands of feet of sand, mud, and rock.</u></em>
Petroleum is a fossil fuel that was formed from the remains of ancient marine organisms. Millions of years ago, algae and plants lived in shallow seas. After dying and sinking to the seafloor, the organic material mixed with other sediments and was buried.

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Which of the following is not the same as 5.63 grams?<br> 5,630 mg<br> 0.563 hg <br> 0.00563 kg

Lady bird [3.3K]

Units of measure is defined as a the magnitude of a certain quantity. There are a lot of units that we can use for mass. Kilograms, grams, tons, pounds and slugs are some of the examples. There are some units where certain prefixes changes its magnitude. One thousand grams is one kilogram. One thousand mg is one gram. 5.63 grams is 5,630 mg and 0.00563 kg is 5.63 grams. Hence the answer here is 0.563 hg.

6 0

3 years ago

Read 2 more answers

Select the false statement below concerning period 4 transition elements. A. The nickel atom has 18 inner/core electrons. B. Bot

zepelin [54]

Explanation:

Atomic number of nickel is 28 and its electronic distribution is 2, 8, 8, 2, 8. Therefore, in the inner/core electrons there are 18 electrons.

Atomic number of chromium is 24 and its electronic configuration is $[Ar]4s^{1}3d^{5}$ . Whereas atomic number of manganese is 25 and its electronic configuration is $[Ar]4s^{2}3d^{5}$ .

Hence, the statement both chromium atom and the manganese atom have half-filled d sub-shells, is true.

Atomic number of Vanadium is 23 and its electronic configuration is $[Ar]4s^{2}3d^{3}$ . Atomic number of nickel is 28 and its electronic configuration is $[Ar]4s^{2}3d^{8}$ .

So, there are three unpaired electrons in a Vanadium atom and in nickel atom there are 2 unpaired electrons.

Hence, the statement vanadium atom has fewer unpaired electrons than the nickel atom, is false.

Atomic number of titanium is 22 and its electronic configuration is $[Ar]4s^{2}3d^{2}$ . Atomic number of zinc is 30 and its electronic configuration is $[Ar]4s^{2}3d^{10}$ .

There are no unpaired electrons in a zinc atom. Hence, the statement titanium atom has more unpaired electrons than the zinc atom, is true.

Atomic number of iron is 26 and its electronic configuration is $[Ar]4s^{2}3d^{6}$ . Since, 4s is the outermost shell so, in iron atom there are 2 valence electrons.

Hence, the statement iron atom has 8 valence electrons, is not true.

Thus, we can conclude that false statements below concerning period 4 transition elements are as follows.

The vanadium atom has fewer unpaired electrons than the nickel atom.

The iron atom has 8 valence electrons.

7 0

3 years ago

In Part B, we determined the water hardness of a water sample by combining the water sample with a 10.00 mL sample of calcium ch

Verizon [17]

Answer:

The definition is defined throughout the clarification section beneath, and according to the particular circumstance.

Explanation:

Although water samples were supplemented with purified water, the amount of EDTA has would be smaller.
Since there are fewer ions throughout purified water, most of the ions are eliminated throughout distillation, less utilized EDTA.
Complex calcium formation including EDTA will be less complex. Samples used throughout the starting include several Ca⁺², Mg²⁺ ions that have not been found in pure water, causing fewer EDTA volume to enter the final stages.

8 0

3 years ago

A sample of hydrogen gas exerts a pressure of 466 torr in a container. What is this pressure in atmospheres? (1 atmosphere = 1.0

Ulleksa [173]

Answer:

pressure = 0.61512atm

Explanation:

1 torr = 0.00132 atm

466 torr = unknown atm

unknown = 0.61512 atm

pressure = 0.61512atm

4 0

4 years ago

Please help!!! I will mark Brainliest !!!!

shepuryov [24]

Answer:

Explanation:

5 0

3 years ago

Read 2 more answers