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ipn [44]
3 years ago
14

Deuterium is a relatively uncommon form of hydrogen, but can be created from what common source? Select one: A. Coal B. Air C. N

atural Gas D. Water
Chemistry
1 answer:
Nitella [24]3 years ago
5 0

Answer:

D. Water

Explanation:

Isotopes -

For some elements , there are various forms possible , which have different number of neutron and same number of protons , are referred to as the isotopes .

The three isotopes possible for the element hydrogen are -

Protium , Deuterium and Tritium .

Where ,

  • Protium has one electron , one proton and zero neutron.
  • Deuterium has one electron , one proton and one neutron.
  • Tritium has one electron , one proton and two neutron.

Deuterium is very rarely found on Earth , but can easily be prepared from water , which is known as deuterated water , which is helpful for isotopic labelling.

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Determine the identity of a cube of metal that measures 1.2 cm on each side and has a mass of 15.4g.
FromTheMoon [43]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
density 15.4 grams per 1.2³ cm³ ≅ 8.9 grams per cm³ 
<span>Find the metal that has a density of approximately 8.9 g/cm³</span>
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How much energy in joules is released when 18.5 grams of copper cools from 285 °C<br> down to 45 °C
nadya68 [22]

Answer: 1709.4 Joules

Explanation:

The quantity of Heat Energy (Q) released on cooling a heated substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since Q = ?

M = 18.5 grams

Recall that the specific heat capacity of copper C = 0.385 J/g.C

Φ = 285°C - 45°C = 240°C

Then, Q = MCΦ

Q = 18.5grams x 0.385 J/g.C x 240°C

Q = 1709.4 Joules

Thus, 1709.4 Joules is released when copper is cooled.

5 0
3 years ago
Which of the following is an example of erosion?
Drupady [299]

Answer:

Glaciers moving rocks and soil through a valley

Explanation:

The definition of Erosion is "the process of eroding or being eroded by wind, water, or other natural agents". Which in turn means the movement of glaciers is causing erosion on the local valley.

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A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and wa
nataly862011 [7]

Colloid

Explanation:

A lotion of this type is a typical colloid mixture.

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  • Water is the dispersion medium and oil is the dispersed phase.

They have the following properties:

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  • The particles are larger than those found in solutions.
  • The particles pass through ordinary filter paper.
  • They may be cloudy or clear .

learn more:

Heterogeneous mixtures brainly.com/question/1446244

#learnwithBrainly

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_________ are rocky materials mixed with very thick oil.
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Tar pits.

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