The coefficients in a balanced chemical equation represent: (2) the mole ratios of the substances in the reaction.
A balanced chemical equation refers to an equation in which the number of atoms present on the reactant side (left) is the same or equal to the number of atoms present on the product side (right) of a chemical equation.
A coefficient can be defined as a number that is placed in front of a chemical symbol (formula) of an element or chemical compound in a chemical equation.
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Aluminum and nitrogen combines together through ionic bonding to form aluminum nitride AlN. Thus, the type of bonding here is ionic bond.
Ionic bonding is the strongest bond type formed between a metal and nonmetal. Metals are electrons rich and can easily lose electrons to form their higher oxidation states.
Non-metals up to group 17 are electrons deficient and they need one or more electrons to attain stability or to fulfill the octet. Metals donate electrons to non-metals forming ionic bonds.
Eve though aluminum is placed with non-metals it shows metallic properties which is classified into 13th group thus, having 3 valence electrons. Nitrogen is 15th group element with 5 valence electrons and thus, need 3 more electrons to attain octet.
Therefore, Al donates it 3 valence electrons to nitrogen forms an ionic bond between them and hence, form the ionic compound aluminum nitride AlN.
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B. Females don't have X chromosomes so aren't affected by gene disorders passed on the X chromosome.
C. Females receive an X chromosomes from each point parent, but in cases of recessive disorders, the muted chromosome isn't passed on to daughters.
D. Females receive an X chromosome from each parent. If a mother is a carrier of an X-linked recessive disorder, her daughters have 50 percent chance of receiving her normal X chromosome and a 50 percent chance of receiving her mutated X chromosome.
Answer:
D. Females receive an X chromosome from each parent. If a mother is a carrier of an X-linked recessive disorder, her daughters have 50 percent chance of receiving her normal X chromosome and a 50 percent chance of receiving her mutated X chromosome.
Explanation:
Females have XX chromosomes as allosomes. They receive one X chromosome from mother and one from father. The female in the III generation received both the healthy X chromosomes from each parent that is why she is not even carrier for the disease.
The modified diagram clearly indicating the genotyope of all the members of the pedigree tree is attached. In the diagram, healthy X chromosome is indicated by X while mutated X chromosome is indicated by doted X. It is clear from the diagram that this female of III generation has XX chromosomes.
The cross for that particular female is shown as under:
Mother Father
ẊX x XY
/ \ / \
ẊX ẊY XX XY
XX are the allosomes of this female child.
Answer: D.
Explanation: Females have XX chromosomes while males have XY
Answer:
the more heat the more particle movement i dont think mass has any thing to do with it
Explanation:
Souring
Melting
Boiling
Freezing
Answer:
melting, freezing, and boiling are physical changes
Explanation:rusting and souring are ex. of chemical, not physical
Answer:
melting boiling frezzing
Explanation:
Answer:
Chemical Formula: AlCl₃
Chemical Name: Aluminium Chloride
Properties are given below.
Explanation:
Chemical Formula:
Chemical formula depicts the total number of elemants forming a particular compound. It is common that all compounds are neutral in nature despite of the internal charges they contain. As given Aluminium has a + 3 charge while Chlorine has a -1 charge, therefore, to make a neutral compound we will require 3 Cl⁻ ions to neutralize one Al³⁺ ion hence, the chemical formula will be AlCl₃.
Chemical Name:
According to rules ionic compounds are named by naming the positive part first followed by negative part. In this case Al³⁺ being is name d first followed by Cl⁻ (remember the -ine in anions is replaced by -ide) hence, this compound will be name as Aluminium Chloride.
Properties:
Few physical and chemical properties of AlCl₃ are;
(i) It melts at 192.4 °C
(ii) Highly Soluble in water
(iii) It has a density of 2.48 g/cm³
(iv) Poor conductor of electricity
(v) It is used as catalyst in many organic reactions
(vi) Reacts with silver nitrate to form silver chloride and Aluminium Nitrate