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faust18 [17]
3 years ago
10

How many uranium atoms are there in 6.1 g

Chemistry
1 answer:
Ket [755]3 years ago
5 0
14 uranium atoms in pure uranium
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The density of Mg is 1.74g/cm3. The density of strontium is 2.60g/cm3. What would you expect the density of Ca to be?
Tomtit [17]

The density of Ca will be between that of Mg and Sr

Explanation:

Ca, Mg and Sr are group II elements. They are called alkali earth metals. The correct order of the elements in this group are: Be, Mg, Ca, Sr, Ba and Ra.

Density is an intensive property of matter which describes the amount of matter(mass) per volume of a substance.

  • Density varies proportionally with mass. The higher the mass, the higher its density.
  • On the periodic table, atomic mass which the number of protons and neutrons in the nucleus of an atom increases down the group.
  • This implies a progradation in the value of density down the group. Therefore one expects that the value of density of Ca will fall between that of Mg and Sr. It cannot be more than 2.6g/cm³ nor less than 1.74g/cm³.

Learn more:

density brainly.com/question/2658982

mass number brainly.com/question/2597088

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6 0
3 years ago
This image shows the development of what climate phenomenon?
Tpy6a [65]

Answer:

Rain shadow

Explanation:

Climate is the average weather condition of a place over a long period of time.

The image shows a rain shadow effect around a mountainous region. The type of rainfall controlled this way is known as an orographic rainfall.

  • On the leeward side which is the opposite side of where the rain cloud forms, there is dryness and lack of rainfall.
  • As moist air rises along the edge of the windward side, cloud forms.
  • This windward side receives a significant amount of rainfall
  • The windward side is hit with cold and dry wind and it is barren.
8 0
3 years ago
Laney left a nail in water for two weeks, and the nail became rusted from sitting in the water.
Simora [160]
B) A chemical change because the nail reacts with water/oxygen to create rust (a type of oxide)
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What effect does mass have on an objects density?
xz_007 [3.2K]
The density of an object or quantity of matter is its mass divided by its volume.
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3 years ago
This is the process that cells reproduce and replace old or damaged cells.
Temka [501]
The answer is A. mitosis
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2 years ago
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