Which classification is the most specific for the element uranium a . actinide-series element
b . transition metal
c . inner transition metal
d . lanthanides-series element
Answers
Answer:
A - actinide-series element
Explanation:
If you go to the periodic table, the atomic number is 92. if you look for 92 you will end up in the inner transition metals then if you get more detail it would be in the actinide section.
The most specific classification for the element uranium is option a, it is an actinide series element. It is a radioactive element.
What is uranium?
Uranium is 92nd element in periodic table. This is a f- block element. In periodic table the elements of groups 3-12 is called transition metals. Elements in f block is called inner transition elements.
The inner transition elements contain two classification, lanthanides and actinides. 57th to 71th elements are called lanthanides. 89 to 103 are called actinides.
Thus, uranium belongs to the actinide series of f block elements in the periodic table therefore, option a is correct.
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Answers
Found in 1781
Takes 84 Earth years to travel around the sun
It's the coldest planet.
ONLY ONE spaceship has flown by it.
seventh planet from the sun
it is turned over and rotates on its side
it is the first planet discovered in modern age
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this is all I can I know
Answers
Answer:
1.552 moles
Explanation:
First, we'll begin by writing a balanced equation for the reaction showing how C8H18 is burn in air to produce CO2.
This is illustrated below:
2C8H18 + 25O2 -> 16CO2 + 18H2O
Next, let us calculate the number of mole of C8H18 present in 22.1g of C8H18. This is illustrated below:
Molar Mass of C8H18 = (12x8) + (18x1) = 96 + 18 = 114g/mol
Mass of C8H18 = 22.1g
Mole of C8H18 =..?
Number of mole = Mass /Molar Mass
Mole of C8H18 = 22.1/144
Mole of C8H18 = 0.194 mole
From the balanced equation above,
2 moles of C8H18 produced 16 moles of CO2.
Therefore, 0.194 mole of C8H18 will produce = (0.194x16)/2 = 1.552 moles of CO2.
Therefore, 1.552 moles of CO2 are emitted into the atmosphere when 22.1 g C8H18 is burned
Final answer:
To calculate the number of moles of CO2 emitted into the atmosphere when 22.1 g of C8H18 is burned, we need to convert the mass of C8H18 to moles using its molar mass. The mole ratio between C8H18 and CO2 is 1:8 based on the balanced chemical equation. Thus the number of moles of CO2 produced can be calculated by multiplying the number of moles of C8H18 by the mole ratio.
Explanation:
To calculate the number of moles of CO2 emitted into the atmosphere when 22.1 g of C8H18 is burned, we need to convert the mass of C8H18 to moles using its molar mass. The molar mass of C8H18 is calculated by summing the atomic masses of its constituent elements: (12 g/mol for carbon)(8 carbon atoms) + (1 g/mol for hydrogen)(18 hydrogen atoms) = 114.22 g/mol for C8H18.
Next we need to use the balanced chemical equation for the combustion of C8H18 to determine the mole ratio between C8H18 and CO2. The balanced equation is: C8H18 + 12.5 O2 → 8 CO2 + 9 H2O.
From the balanced equation, we can see that 1 mole of C8H18 produces 8 moles of CO2. Thus we can calculate the number of moles of CO2 produced by dividing the mass of C8H18 by its molar mass and multiplying by the mole ratio:
number of moles of CO2 = (mass of C8H18 / molar mass of C8H18) * 8
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Answers
Porphyry is an igneous rock that contains giant crystals surrounded by smaller crystals.
One of the most common types of rocks is an igneous rock, which is created when molten material solidifies either below or above the Earth's surface. The Latin word "ignis," which meaning fire, is where the term "igneous" gets its name. These rocks were created by the molten magma, which is a mixture of different minerals, gases, and liquids. Igneous rocks are created when magma that has risen from below the Earth's crust cools. There are two different types of igneous rocks produced by this process: intrusive and extrusive. This process can be either slow or rapid. Porphyry is an igneous rock that contains giant crystals surrounded by smaller crystals.
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I hope this helps!! :)
Answers
Answer:
24 calories of protein
Explanation:
200 - 176 = 24 calories
(C)all of the water on the Earth
(D) all of the fresh water on the Earth
This is on study island
Answers
Hydrosphere consists of the total water content in a planet. Thus all forms of water in earth including surface water and frozen water compose the hydrosphere. Therefore, option C is correct.
What is hydrosphere?
The entire amount of water on a planet is known as the hydrosphere. Water that is present on the planet's surface, beneath, and in the atmosphere all belong to the hydrosphere. The hydrosphere of a planet can exist as liquid, vapor, or ice.
Oceans, lakes, and rivers are the surface forms of liquid water on Earth. In wells and aquifers, it can also be found underground as groundwater. As clouds and fog, water vapor is most easily seen.
Ice makes up glaciers, ice caps, and icebergs, which make up the frozen portion of the Earth's hydrosphere. The cryosphere is the name given to the portion of the hydrosphere that is frozen.
Within the hydrosphere, water circulates in a cycle. Clouds contain water that eventually falls to Earth as rain or snow. This water accumulates in lakes and oceans. It i s called water cycle.
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Answer:
(C)all of the water on the Earth
Explanation:
The hydrosphere consists of all the water found on earth. The hydrosphere include water found in the cloud, fresh water bodies and salt water bodies.
The hydrosphere is interlinked via the water cycle. Water leaves the earth surface to the cloud, condenses and falls again to the earth the ground.
The water cycle shows the free flow of water within the hydrosphere.
Answers
Answer : The equilibrium constant expression will be,
Explanation :
The given balanced chemical reaction is,
The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.
The concentrations of pure solids are constant that is they do not change. Thus, they are not included in the equilibrium expression.
So, the equilibrium constant expression will be,
Answer: D
Explanation: