All categories

3 years ago

Write the formulae and names of compounds formed by combination of

Chemistry

1 answer:

gladu [14]3 years ago

7 0

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

You might be interested in

ELETE

yKpoI14uk [10]

Answer:

5 L

Explanation:

Use Charles law and rearrange formula

Change C to K

- Hope that helped! Please let me know if you need further explanation.

6 0

4 years ago

The work function of an element is the energy required to remove an electron from the surface of the solid element. The work fun

Anton [14]

Explanation:

The given data is as follows.

Energy needed for 1 mole = 279.7 kJ = $279.7 \times \frac{1000 J}{1 kJ}$

= 279700 J

Therefore, energy required for 1 atom will be calculated as follows.

$\frac{279700}{6.022 \times 10^{22}}$

= $4.645 \times 10^{-19} J$

As relation between energy and wavelength is as follows.

E = $\frac{hc}{\lambda}$

where, h = planck constant = $6.62 \times 10^{-34} Js$

c = speed of light = $3 \times 10^{8} m/s$

$\lambda$ = wavelength

Therefore, putting given values into the above formula as follows.

E = $\frac{hc}{\lambda}$

$4.645 \times 10^{-19} J$ = $\frac{6.62 \times 10^{-34} Js \times 3 \times 10^{8} m/s}{\lambda}$

$\lambda$ = $4.28 \times 10^{-7} m$

or, = $428 \times 10{-9}$ m

= 428 nm

Thus, we can conclude that the maximum wavelength of light that can remove an electron from an atom on the surface of lithium metal is 428 nm.

4 0

3 years ago

Which of the following is not true about alkaline earth metals?

dem82 [27]

Where are the answer choices?

8 0

3 years ago

What is happening in the diagram?

OlgaM077 [116]

Answer:It is a picture with a boat sailing on the water with sound waves going down to an old and sunken ship but the waves then go back up to the boat in a different angle.

Explanation:

hope it works thx

4 0

4 years ago

One mole of aluminum atoms has a mass of 27 grams. How many grams are in 9.0 moles of aluminum?

gizmo_the_mogwai [7]

27*9=243 if one mole is equal to 27 grams times that by 9

6 0

3 years ago