What is the valency & molecular formula of sulphate?

Answers

Answer 1

Answer:

Explanation:

Let's consider sulphate radical, the chemical formula is given by SO42−. Here we can see there is a -2 charge on SO4, which means it has -2 valency. Now look at the option (a), phosphate can be written as PO43−. There is -3 charge on PO4, that means it has -3 valency.

Answer 2

Answer:

Explanation:

molecular formula of sulphate ion is SO₄²⁻

and

the valency of sulphate ion is 2.

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Do you think that there is a high correlation between proficiency in mathematics and proficiency in chemistry? Explain why or why not. Use details about the components of each field to support your answer.

Answers

According to the fact that they both include the reaction change of elements through different processes, there should be a nice connection between them. In math, numbers pose as an element, and in chem - elements are physical things. Both of them can change due to reaction or a formula.

What two sub-atomic particles are located in the nucleus of the atom?

Answers

Protons and Neutrons. Also star this answer please :)

Neutrons (netral charge) and Protons (positive charge) are in the nucleus wile Electrons (begitive charge) are outside the nucleus of an atom.

Choose the statement that best describes the titration from which this data was collected

Answers

I think the correct answer is the first option. The analyte was an acid but and the titrant is a base since from the graph the initial pH of the solution is at an acidic pH when there is still no titrant added.

Under which conditions of temperate and pressure does oxygen gas behave least like an ideal gas

Answers

Under extremely high pressure and extremely low temperature. This is because part of the requirements of an ideal gas is that the atoms/molecules don't interact which brakes down at low temperatures and the atoms/molecules are point masses that have insignificant volumes compared to the volume the gas is in which breaks down at high pressures.

Which scientist invented a model of the atom that most closely resembles the modern electron cloud model?j.j. Thomson

Niels Bohr

Ernest Rutherford

John Dlaton

Answers

Neil Bohr is the scientist who invented a model of the atom that most closely resembles the modern electron cloud model.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

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The scientist that invented a model that shows the electron cloud is Neil Bohr.

After creating a Beer's Law plot using standard solutions of Q, you determined the slope of Beer's Law to be 0.543 M-1. Your unknown solution of Q tested in Part B of the experiment had an absorbance of 0.144. Determine the concentration (in molarity) of the unknown solution Q from Part B. Do not use scientific notation or units in your response. If Carmen adds zeros after the decimal place, your answer will still be graded correctly.