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3 years ago

What is the name of S2Br6

Chemistry

1 answer:

Nikitich [7]3 years ago

6 0

Answer:

disulfur hexabromide

Explanation:

First, identify the element names using your periodic table.

"S" means sulfur. "Br" means bromine. The second element drops the ending and adds "-ide".

S₂Br₆

sulfur bromide

Decide if the compound is ionic or covalent.

Since there are two non-metals, this is a covalent compound. So, will use Greek prefixes for the number of atoms. You can see the list below and find "2" and "6".

S₂Br₆

disulfur hexabromide

List of Greek number prefixes:

1 mono

2 di

3 tri

4 tetra

5 penta

6 hexa

7 hepta

8 octa

9 nona

10 deca

The name of S₂Br₆ is disulfur hexabromide.

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Q1. Briefly explain why the Zeff experienced by a valence electron in Cl is larger than in Mg. Q2. Briefly explain why the Zeff

Inessa05 [86]

Answer:

See explanation

Explanation:

Q1:

Chlorine has 17 protons while magnesium has only 12 protons. Recall that the Zeff depends on the size of the nuclear charge. The greater the size of the nuclear charge, the larger the Zeff experienced by a valence electron.

Q2:

The larger the Zeff, the smaller the atomic radius. Since the valence electrons of Cl experience a greater Zeff than those of Mg due to greater size of the nuclear charge, the atomic radius of chlorine will be smaller than that of Mg.

Q3:

The radius of an atom increases as the value of the principal quantum number (n) increases down the group due to addition of more shells. The greater the number of shells added, the greater the principal quantum number (n) and the greater the atomic radius, hence the answer.

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3 years ago

Consider the reaction pathway graph below.

igomit [66]

Answer:

subtract E from D

Explanation:

The graph shown the potential energy diagram of the reaction "reaction pathway".

X-axis represents the reaction progress, the transformation from the reactants to the products passing via the transition state.

Y-axis represents the potential energy of the reactants and the products and also the intermediate.

As clear from the attached image "F" represents the position of the reactants of the reaction, "B" represents the position of the intermediate/transition state and "G" represents the position of the products of the reaction.
Region "A" is the potential energy difference between the intermediate "B" and the reactants "F" which represents the activation energy of the reaction "Ea". Activation energy "Ea" can be defined as the minimum energy that the reactants should posses to initiate the reaction.
Region "C" is the potential energy difference between the reactants "F" and the products "G" which represents the enthalpy change of the reaction "ΔH".
ΔH = pot. energy of the products "G" - pot. energy of the reactants "F".
If "ΔH" is positive this means that the reaction is endothermic and this occurs when the potential energy of the products is greater than that of the reactants.

If "ΔH" is negative this means that the reaction is exothermic and this occurs when the potential energy of the products is smaller than that of the reactants.
In our example, It is obvious that the energy of the reactants is greater than the potential energy of the products.

So, ΔH will have a negative value which means that the reaction is exothermic reaction.
Thus, the right choice is: "subtract E from D" would provide evidence to support the inference that this is an exothermic reaction.

7 0

3 years ago

Read 2 more answers

Atoms of elements in the same group have the same number of

tresset_1 [31]

Answer:

The elements of same group have similar chemical properties because they have same number of valence electrons.

Explanation:

6 0

4 years ago

Calculate the standard entropy of reaction at 298 K for the reaction Hg(liq) + Cl2(g) → HgCl2(s) The standard molar entropies of

never [62]

Answer:

−153.1 J / (K mol)

Explanation:

Calculate the standard entropy of reaction at 298 K for the reaction Hg(liq) + Cl2(g) → HgCl2(s) The standard molar entropies of the species at that temperature are: Sºm (Hg,liq) = 76.02 J / (K mol) ; Sºm (Cl2,g) = 223.07 J / (K mol) ; Sºm (HgCl2,s) = 146.0 J / (K mol)

Hg(liq) + Cl2(g) → HgCl2(s)

Given that;

The standard molar entropies of the species at that temperature are:

Sºm (Hg,liq) = 76.02 J / (K mol) ;

Sºm (Cl2,g) = 223.07 J / (K mol) ;

Sºm (HgCl2,s) = 146.0 J / (K mol)

The standard molar entropies of reaction = Sºm[products] - Sºm [ reactants]

= 146.0 J / (K mol) – [76.02 J / (K mol) +223.07 J / (K mol) ]

= -153.09 J / (K mol)

= or -153.1 J / (K mol)

Hence the answer is −153.1 J / (K mol)

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4 years ago

Why do scientists use STP? options: A. STP has no negative numbers which makes calculations easier. B. Because temperature and p

alexdok [17]

Answer: B

Explanation: It makes the most sense to me as the way temperature is measured, is with 0 degrees Celsius as the standard and 1 atm for pressure, if I am incorrect for any reason, please let me know

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3 years ago