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Based on these facts, we should classify Germanium as a Metalloid.
Metalloids are chemical elements with a mixture of properties from metals and non-metals. Although Germanium has a metallic appearance (typical of metals), it doesn't have the conductive properties of metals, but is a semiconductor. The semiconductive properties of Germanium are used in applications like transistors and chips.
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Electrons move from higher energy states to lower energy states
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Answer: The balanced equation is 
.
Explanation:
The given reaction equation is as follows.
Number of atoms present on reactant side are as follows.
- Li = 1
- H = 1
= 1
Number of atoms present on product side are as follows.
- Li = 1
- H = 2
- = 1
To balance this equation, multiply Li by 2 and 
by 2 on reactant side. Also, multiply 
by 2 on product side.
Hence, the equation can be rewritten as follows.
Now, number of atoms present on reactant side are as follows.
- Li = 2
- H = 2
- = 2
Number of atoms present on product side are as follows.
- Li = 2
- H = 2
- = 2
As there are same number of atoms on both reactant and product side. Hence, the equation is now balanced.
Thus, we can conclude that the balanced equation is .
Answer:
D: Decomposition Reaction
Explanation:
A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances.
The general form of a decomposition reaction is: AB -> A+B.
You just split the nonmetals into a molecule depending on the element.
But they are rules though when doing this reaction. If a element is a diatomic molecule, then you would write a 2 in the subscript.
Diatomic molecules contain two atoms that are chemically bonded
<h3>The 7 diatomic elements are: </h3><h3>H: Hydrogen H2</h3><h3>N: Nitrogen N2</h3><h3>F: Fluorine F2</h3><h3>O: Oxygen O2</h3><h3>I: Iodine I2</h3><h3>C: Carbon C2</h3><h3>B: Bromine B2</h3>
Now let us go back to this problem: 2H2O -> 2H2 + O2
So water or 2H2O split into 2H2 and O2 because hydrogen and oxygen are diatomic elements.
That is how you write the product of a decomposition reaction.
Hope it helped!
The Law states that the change in internal energy (U) of the system is equal to the sum of the heat supplied to the system (q) and the work done ON the system (W)
<span>ΔU = q + W </span>
<span>For the first question, 0.653kJ of heat energy is removed from the system (balloon) while 386J of work is done ON the balloon, thus </span>
<span>ΔU = -653J + 386J </span>
<span>=-267J </span>
<span>Thus internal energy decrease by 267J </span>
<span>For the second question, 322J of heat energy is added to the system (gold bar) while no work is done on the gold bar, this is an isochoric/isovolumetric process, thus </span>
<span>ΔU = 322J + 0 </span>
<span>=322J </span>
<span>Thus internal energy increase by 322J</span>
