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3 years ago

Nyatakan maksud bagi kation

2 answers:

7 0

A kation adalah ionik spesies dengan cas positif. Perkataan "cation" berasal dari perkataan Yunani "kato," yang bermaksud "turun." Kation mempunyai lebih banyak proton daripada elektron , memberikan muatan positif bersih.

PilotLPTM [1.2K]3 years ago

6 0

lanuage ? lanuage ? lanuage ?

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How can i find nuclear charge and overall charge while only knowing the atomic mumber, number of protons and electrons?

Mazyrski [523]

Explanation:

An atom is made up of:

Protons which are the positively charged particles
Electrons are negatively charged
Neutrons carry no charges.

Atomic number is the number of protons in an atom.

To find the nuclear charge:

We use the effective nuclear charge formula:

Effective nuclear charge = Atomic number - number of shielding electrons(non-valence electrons)

The shielding electrons are the non-valence electrons in the inner orbitals.

For example:

Ne:

atomic number = 10

Effective nuclear charge = 10 - (2) = 8+

Number of non-valence electrons is 2

The effective nuclear charge is 8+

Overall charge:

Charge = number of protons - number of electrons

For neutral atoms, the overall charge is zero as the number of protons and electrons are the same.

Learn more:

Effective nuclear charge brainly.com/question/5441986

#learnwithBrainly

7 0

3 years ago

the sewing thread ritu brought had the label mercerized? give the advantages of mercerization and explain the process of merceri

Akimi4 [234]

Answer:

Here's what I find

Explanation:

Mercerization involves the treating of cotton fibres with NaOH solution and then drying them under tension.

The process changes the internal structure of the fibres and causes them to swell.

The advantages of mercerization are:

Greater affinity for dyes (saves money)
Increased tensile strength
A high degree of lustre (better appearance)
Greater absorption of moisture (e.g., sweat)
Greater resistance to shrinking

5 0

3 years ago

Which of the following equilibria would not be affected by pressure changes at constant temperature?

mojhsa [17]

Answer:

Option A) CO(g) + 1/2O2(g) <=> CO2(g).

Explanation:

A background knowledge of reaction rates shows that pressure will only affect gaseous reactant.

Further more, we understood that for pressure to effectively affect gaseous molecules, the total volume of the gaseous reactant must be different from the total volume of the gaseous products.

Now, let us consider the equation given in the question:

A) CO(g) + 1/2O2(g) <=> CO2(g).

B) CaCO3(s) <=> CaO(s) + CO2(g).

C) 2H2(g) + O2(g) <=> 2H2O(l).

D) 2Hg(l) + O2(g) <=> 2HgO(s).

E) CO2(g) + H2(g) <=> CO(g) + H2O(g).

From the above, only option A and E has gaseous reactant and product.

For option A:

CO(g) + 1/2O2(g) <=> CO2(g).

Total volume of reactant = 1 + 1/2 = 3/2 L

Total volume of product = 1 L

Since the volume of the reactant and that of the product are different, therefore, a change in pressure will affect the reaction.

For option E:

CO2(g) + H2(g) <=> CO(g) + H2O(g).

Total volume of reactant = 1 + 1 = 2 L

Total volume of product = 1 + 1 = 2 L

Since the volume of the reactant and that of the product are the same, therefore, a change in pressure will have no effect in the reaction.

6 0

3 years ago

How many moles of KClO3 must decompose in order to produce 9 moles of oxygen gas (O2) using the following reaction by completing

mezya [45]

Answer: 6 moles of $KClO_3$ will be decomposed.

Explanation:

We are given:

Moles of oxygen gas produced = 9 moles

The chemical equation for the decomposition of $KClO_3$ follows:

$2KClO_3\rightarrow 2KCl+3O_2$

By the stoichiometry of the reaction:

If 3 moles of oxygen gas is produced by 2 moles of $KClO_3$

So, 9 moles of oxygen gas will be produced by = $\frac{2}{3}\times 9=6mol$ of $KClO_3$

Hence, 6 moles of $KClO_3$ will be decomposed.

4 0

3 years ago

The energy needed to destabilize existing chemical bonds and start a chemical reaction is called ____.

postnew [5]

If all chemical reactions that release free energy tend to occur spontaneously,why haven't all such reactions already occurred? One reason is that most reactions require an input of energy to get started.Before it is possible to form new chemical bonds,even bonds that contain less energy,it is first necessary to break the existing bonds,and that takes energy.The extra energy required to destabilize existing chemical bonds and initiate a chemical reaction is called activation energy.

3 0

3 years ago

Nyatakan maksud bagi kation​

Nyatakan maksud bagi kation