Answer:
(i) Formula = Fe₂(SO₄)₃
Name = Iron (III) Sulfate or ferric sulfate
(ii) Formula (NH₄)₂CO₃
Name = Ammonium Carbonate
Explanation:
Data given:
(i) Fe³⁺ and SO₄²⁻
ii) NH₄⁺ and CO₃²⁻
Formula and named of the compound =?
Solution:
(i) compound from Fe³⁺ and SO₄²⁻ and its name
writing a formula in combined form
- The symbols of two ions written together that is FeSO₄
- The charges shown on each atom is its valency and it show its combining tendency so iron will combine with 3 sulfate ions and sulfate ion will combine with 2 iron ions
- When two ions combine their valencies should be write on the base of the alternate ions.
- that is 2 will be at the base of Fe and 3 will be at the base of SO₄ without charges
- So the combined formula and name will be
compound formula form from Fe³⁺ and SO₄²⁻ = Fe₂(SO₄)₃
Name of the compound = Iron (III) Sulfate or ferric sulfate
______
(ii) compound from NH₄⁺ and CO₃²⁻ and its name
writing a formula in combined form
- The symbols of two ions written together that is NH₄CO₃
- The charges shown on each atom is its valency and it show its combining tendency so NH₄⁺ will combine with 1 carbonate ion and carbonate ion will combine with two NH₄⁺ ions
- When two ions combine their valencies should be write on the base of the alternate ions 1 should not be written.
- 2 will be at the base of NH₄⁺ without charge
- So the combined formula and name will be
compound formula form from NH₄⁺ and CO₃²⁻ = (NH₄)₂CO₃
Name of the compound = Ammonium Carbonate
Answer:
because I told them to do.
Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.
Answer:
20.5 atm
Explanation:
First, let's calculated the volume of the air tank. For a sphere, the volume is
V = (4/3)xπr³, where r is the radius.
The diamenter given is 78 cm, so r = 78/2 = 39cm, then:
V = (4/3)xπx39³
V = 248,474.84 cm³
Knowing that 1 cm³ = 0.001 L, V = 248.5 L
The gas will reduce its volume, but the temperature will not change, so we can use the Boyle equation for isothermic transformation:
P1V1 = P2V2, supposing that in the initial state the gas is in 1 atm
1x5100 = P2x248.5
P2 = 5100/248.5
P2 = 20.5 atm (3 significant digits)
Carbon is like gas that the different
Answer: (i) blue colour fades away
(ii) Single replacement
(iii) copper sulphate + iron iron sulphate + copper
Explanation:
Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.
Here iron being more reactive than copper can easily displace copper from its salt solution and form iron sulphate and copper in elemental form.
The blue colour of the copper sulphate solution fades away.
The word equation is :
copper sulphate + iron iron sulphate + copper