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4 years ago

Explain how the atomic number of an element identifies the element

1 answer:

5 0

<span>The element’s atomic number is determined by the number of positively charged particles (protons) inside the nucleus of an atom. In other words, each element has a rare number that identifies the number of protons are in an atom. </span> As the elements categorically have their own number of negatively charged particles (electrons), we will be able to determine and identify the element from these numbers. <span>Say for instance, Hydrogen atoms. All hydrogen atoms, and a hydrogen atom only contains a proton and logically has an atomic number of 1.</span>

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Which elements does sulfate ion contain?

Rom4ik [11]

Answer: Sulphur and Oxygen

Explanation: Sulphate ion is $SO_4^{2-}$ . It is polyatomic ion which is formed by the combination of sulphur and oxygen elements in the ratio of 1:4.

It is negatively charged species and thus is named by the name _ate at the end.

It usually exists with positively charged species to get stable. eg: ferrous sulphate ( $FeSO_4$ )

4 0

3 years ago

Which list below contains only renewable resources

gulaghasi [49]

- Tidal Energy

- Biomass Energy

- Solar Energy

- Wind Energy

- Hydropower

-Ocean Thermal Energy

- Biogas

-Geothermal Energy

-Air

-water

-wood

Explanation:

renewable resources are the natural resources which will help to replace the portion got deplete. These resources will fill up the gaps by any recurring processes or any natural process in a finite time.

Most of the renewable resources are part of the earth’s ecosphere and considered as part of the earth's natural environment.

water is technically a renewable resource because it can use over and over but the sustainability of this renewable resource is a question.

5 0

3 years ago

What is meant by Orion? for grade 10

wariber [46]

Answer:

[Latin (genitive Orionis)] : a constellation on the equator east of Taurus represented on charts by the figure of a hunter with belt and sword. 2 : a giant hunter slain by Artemis in Greek mythology.

Explanation:

8 0

3 years ago

Read 2 more answers

How does increasing pressure affect the rate of reaction between gases?

Elina [12.6K]

Answer:

B, increases rate of collisions

Explanation:

7 0

3 years ago

How can you experimentally determine the pka of acetic acid?

velikii [3]

Explanation:

The pKa value of acetic acid is determined experimentally by plotting pH titration curve.

The hydrogen ion, H+ concentration can be determined by performing a pH titration of a weak acid with a strong base like NaOH etc.

Starting from the dissociation equation for the acid,

HA(aq) + OH-(aq) --> H3O+(aq) + A−(aq)

we obtain for the point of half equivalence (where half of the acid has reacted with the base):

[A−] = [HA].

From the equilibrium equation

it therefore follows that

pKa = pH.

6 0

3 years ago