All categories

3 years ago

Write the empirical formulas of the following compounds: (a) Al2Br6, (b) Na2S2O4, (c) N2O5, (d) K2Cr2O7, (e)H2C2O4.

Chemistry

1 answer:

babunello [35]3 years ago

4 0

Answer:1. $AlBr_3$

2. $NaSO_2$

3. $N_2O_5$

4. $K_2Cr_2O_7$

5. $HCO_2$

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

1. $Al_2Br_6$ has empirical formula of $AlBr_3$

2. $Na_2S_2O_4$ has empirical formula of $NaSO_2$

3. $N_2O_5$ has empirical formula of $N_2O_5$

4. $K_2Cr_2O_7$ has empirical formula of $K_2Cr_2O_7$

5. $H_2C_2O_4$ has empirical formula of $HCO_2$

You might be interested in

Which type of radioactive particle was emitted by the following isotopes?

Paul [167]

Radioactive decay or disintegration is a process through which unstable nuclei form q more stable nuclei by the release of elementary particles like alpha particles, beta, protons, neutrons etc along with the release of energy.

In the given examples:

a) N-13 will get converted in to carbon, C-12 along with the release of a proton as shown below:

₇N¹³ → ₆C¹² + ₁H¹

b) N-15 will get converted in to boron B-11 along with the release of an alpha particle

₇N¹⁵ → ₅B¹¹ + ₂He⁴

3 0

4 years ago

A gas has a volume of 45 L at a pressure of 140 kPa. What is the volume when

suter [353]

Answer:

21 L

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

8 0

4 years ago

Write at least 5 different sentences each adjective describes: crystal_____, soluble_____, hard_________, solid_______,

rewona [7]

Answer:

Definite shape, definite volume, definite melting point, high density, incompressibility, and low rate of diffusion.
The most obvious physical properties of a liquid are its retention of volume and its conformation to the shape of its container.
When a liquid substance is poured into a vessel, it takes the shape of the vessel, and, as long as the substance stays in the liquid state, it will remain inside the vessel.
There are four types of crystalline solids: ionic solids, molecular solids, network covalent solids and metallic solids.
There are two types of liquid-liquid mixtures. They are: Homogeneous Liquid-Liquid Mixture. This is a type of liquid-liquid mixture whereby the two substances mix completely to from a single substance.

3 0

3 years ago

what is the molecular formula if the emperical formula C2H5 and the molcuar molar mass is 58.14 g/mol0

Ivanshal [37]

Answer:

C4H10

Explanation:

Remark

Every periodic table is different. I'm going to use approximate numbers.

Emperical Formula Mass

2C = 2 * 12 = 24

H5 = 5 1 5

Emperical Formula Mass = 29

Solution

To get the molecular Molar Mass, you use

Molecular Molar Mass = number of mol of each constituent * empirical molar mass

Molecular mass = 58.14 rounded to 58

empirical mass = 29

moles = constitutent = ?

58 = 29 * mols constituent Divide by 29

2 = moles constituent

Answer

(C2H5)_2

C4H10

7 0

3 years ago

Which properties of matter are independent of the amount of the material?

Radda [10]

Answer:

Only physical properties, cause physical properties has to have mass, weight, volume, etc

6 0

3 years ago