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Leno4ka [110]
3 years ago
11

Pb(NO3)2+KI ——-> KNO3 + PbI2

Biology
2 answers:
docker41 [41]3 years ago
8 0

Answer:

The balance form of the equation is given below.

Pb(NO3)2+2KI ——-> 2KNO3 + PbI2

Explanation:

In this equation lead nitrate and potassium iodide are reactants while potassium nitrate and lead iodide are the products. In the unbalanced form of equation, two molecule of iodine are formed in the product whereas there is only one molecule of iodine is present in the reactant. So for balancing this, 2 value is put in front of potassium iodide but by putting 2, potassium is also double in the reactant so 2 is also placed in front of potassium nitrate in the product and the equation is balanced.

taurus [48]3 years ago
8 0

Answer: The balanced equation is Pb(NO3)2 + 2KI ——-> 2KNO3 + PbI2.

Explanation: In writing chemical equations, the law of conservation of mass which states that matter can neither be created nor be destroyed in an ordinary chemical reaction must be obeyed. This means that the total mass of the reactants must be equal to the total mass of the products formed.

Pb(NO3)2 + 2KI ——-> 2KNO3 + PbI2.

The number of atoms on both sides of the equation must equal in the above equation.

The number of Pb atom is 1 on both sides. The number of N atoms is 2 on both sides. The number of O atoms on both sides is 6, the number of K atoms on both sides is 2 while the number of I atoms is 2 on both sides.

Therefore, the equation is balanced.

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Answer:

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Explanation:

It should be understood that Iodine solution is used to test leaves for the presence of starch. This will show a blue-black color, which means the presence of starch.

This process can simply be demonstrated by simply following these steps.

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* The leaf kept in the dark will not turn blue-black because of absence of starch.

In conclusion, the iodine is used to test for starch.

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A genotype is controlled by the sex cells combining to form an organism. True or False
myrzilka [38]

True

A genotype is the combination of genes in its DNA of the organism that determines its traits

Explanation:

Gametes from parents contribute different alleles of genes to their offspring. This why gametes carry only one copy of genetic material of the organism. They later fuse to form a zygote with a full genetic copy and capable of developing into an full organism.

Depending on which kind of alleles the parents pass down to the offspring will determine the offspring's genotype. The genotype of the offspring will, on the other hand, affect its phenotype which is the outward characteristic. An example is the sickle cell trait. If both gametes from the parents contribute the recessive alleles of the gene, then the offspring will be homozygous recessive for sickle cell genotype and this will show in the phenotype pf the person who will have sickle cell shaped blood cells.

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