Definition of periodic trends

Chemistry

1 answer:

Dmitriy789 [7]4 years ago

7 0

Answer:

.Periodic trends are specific patterns in the properties of chemical elements that are revealed in the periodic table of elements. Major periodic trends include electronegativity, ionization energy, electron affinity, atomic radii, ionic radius, metallic character, and chemical reactivity.

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Balance equations FeS + O^2 - Fe^2O^3 + SO^2

puteri [66]

Explanation:

2FeS + 7/2O2 ---> Fe2O3 + 2SO2

6 0

3 years ago

Calculate the mass of each product formed when 84.3 g of silver sulfide reacts with excess hydrochloric acid: ag2s(s) + hcl(aq)

oee [108]

Answer:

48.75 g of AgCl

11.60 g of H₂S

Solution:

The Balance Chemical Equation is as follow,

Ag₂S + HCl → AgCl + H₂S

Calculate amount of AgCl produced,

According to equation,

247.8 g (1 mol) of Ag₂S produces = 143.32 g (1 mol) of AgCl

So,

84.3 g of Ag₂S will produce = X g of AgCl

Solving for X,

X = (84.3 g × 143.32 g) ÷ 247.8 g

X = 48.75 g of AgCl

Calculate amount of H₂S produced,

According to equation,

247.8 g (1 mol) of Ag₂S produces = 34.1 g (1 mol) of H₂S

So,

84.3 g of Ag₂S will produce = X g of H₂S

Solving for X,

X = (84.3 g × 34.1 g) ÷ 247.8 g

X = 11.60 g of H₂S

6 0

3 years ago

The following equation shows the equilibrium in an aqueous solution of ammonia: NH3(aq)+H2O(l)⇌NH4+(aq)+OH−(aq)NH3(aq)+H2O(l)⇌NH

yarga [219]

Answer:

c) H2O and OH−

Explanation:

Acids are the species which furnish hydrogen ions in the solution or is capable of forming bonds with electron pair species as they are electron deficient species.

When an acid donates a proton, it changes into a base which is known as its conjugate base.

Bases are the species which furnish hydroxide ions in the solution or is capable of forming bonds with electron deficient species as they are electron rich species. When a base accepts a proton, it changes into a acid which is known as its conjugate acid.

The acid and the base which is only differ by absence or presence of the proton are known as acid conjugate base pair.

Thus, for the reaction,

$NH_3+H_2O\rightleftharpoons Nh_4^++OH^-$