What is the representative particle of Fe?
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Related Questions
What type of bonds form salt crystals
What balances charges that may build up as reduction and oxidation occur in a voltaic cell?a. the salt bridge c. the electrolyte solutions b. one of the half-cells d. the moving electrons
Select all of the answers that apply. Which of the following are ways the atmosphere supports life? contains trace gases blocks harmful UV rays transports and distributes heat cycles essential elements: C, O, and N
Which of the following is an oxidation reaction? A. AuCl4- → AuCl 2- B. Mn7+ → Mn2+ C. Co3+ → Co2+ D. Cl2 → ClO3-
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H2 + O2 => H2O.
Then, balanced, as
2H2 + O2 = 2H2O
There we see that we need 2 times more mol of H2 than O2. So mol of O2 is 1/2 mol of H2. That is 27.4 mol / 2 = 13.7 mol.
Answer:
B
Explanation:
H2 + O2 => H2O.
Then, balanced, as
2H2 + O2 = 2H2O
There we see that we need 2 times more mol of H2 than O2. So mol of O2 is 1/2 mol of H2. That is 27.4 mol / 2 = 13.7 mol.
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Explanation:
Sodium has atomic number of 11 with electronic configuration of :
Sodium loose it single electron to attain stability of noble gas configuration. While this process electron gets removed from the outer shell of the sodium atom and it gains positive charge of +1.
(Ionization)
They can be created by chemical reactions.
They can consist of no more than two types of elements.
They all have the same properties regardless of their elemental composition.
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Compounds have varying properties, depending on the compounds they are made from, and are created by chemical reactions.
Answer: The correct option is that the compounds are created by chemical reactions.
Explanation:
Option 1: Elements combine chemically in a specific ratio to form compounds. They can't be separated by physical methods like filtration. For example, is made up 2 H-atoms and 1 O-atom. When we filter water through normal filtration, we do not obtain H-atom and O-atom separately, but we get combined form of hydrogen and oxygen atom that is
.
Option 2: Compounds are formed when two or more elements combine chemically.
Option 3: Compounds can have more than two types of elements. For example, In , 3 elements are present - Calcium(Ca), Carbon(C), Oxygen(O).
Option 4: Compounds formed have different properties from one another. There can be difference in physical properties as well as chemical properties. For example, (water) and
(calcium carbonate) are two compounds. Water is present in liquid state and calcium carbonate is present in solid state. Hence, it showed that all the compounds cannot have same properties.
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Answer:
The rubber becomes brittle and can break in your hand. The explanation for why this happens concerns cross-linking bonds. Ultra-violet light from the sun provides the polymer molecules with the activation energy they need to be able to form more cross-links with other chains.
Final answer:
If excessively excessive cross-links are formed in rubber, it becomes overly rigid and brittle, hampering its natural elasticity and strength. The increase in cross-links restricts the moving of the polymer chains, undermining the effectiveness of the rubber in many applications.
Explanation:
The formation of cross-links in rubber significantly affects its properties. In the case where too many cross-links are formed, the rubber is likely to become overly rigid and brittle. This is because the cross-links restrict the movement of the polymer chains, which reduces flexibility and elasticity. As a result, too many cross-links can compromise the usefulness of rubber for many applications, which require its natural elasticity and strength. For example, in a rubber band, if too many cross-links were formed, then it would be less stretchy and snap more easily when stretched.
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Answer:the temperature might increase because of the humidity in the room so everything gets goofy and moist
Explanation:
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Final answer:
A nuclear family consists of two parents and their children, living together without any other relatives. It is seen as the core unit of a family structure.
Explanation:
A nuclear family, also referred to as an elementary family, is a family group that typically consists of two parents and their children. It is considered the smallest family unit and is widely seen across different cultures and societies. This family structure is contrasted with extended family, which includes other relatives like grandparents, aunts, uncles, and cousins.
For example, if there's a mother, father, and two children in a household, with no other relatives living with them, that is a nuclear family. The term 'nuclear' is used to denote that this unit is the core, central part of the family from which other members branch out.
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