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Lina20 [59]
3 years ago
14

A barium atom attains a stable electron configuration when it bonds with

Chemistry
1 answer:
vladimir2022 [97]3 years ago
6 0
<span>Barium lies in the second group of the periodic table. Elements in this group have two valence shell electrons. These elements have a tendency to produce cations since it is easier to lose the two electrons than to gain six. Now, out of the options, chlorine forms an anion. It is an element from group 7, meaning it exhibits a valency of -1. Therefore, in order to bond with Barium, two Chlorine atoms will be needed. <u>The second option is correct.</u></span>
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A chemist prepares a solution of zinc nitrate Zn(NO3)2 by measuring out 78.3g of zinc nitrate into a 350ml volumetric flask and
Anvisha [2.4K]

Answer:

M = 1.18 mol/L

Explanation:

Moles is denoted by given mass divided by the molecular mass ,

Hence ,

n = \frac{w}{n}

n = moles ,

w = given mass ,

m = molecular mass .

From the information of the question ,

w = 78.3 g

As we known ,

molecular mass of Zn(NO_3)_2 is 189.36 g/mol

m = 189.36 g/mol

moles can be calculated as -

n = \frac{w}{n}

n = \frac{78.3g}{189.36 g/mol}

n = 0.413 mol

MOLARITY  -

Molarity of a substance , is the number of moles present in a liter of solution .

M=\frac{n}{V}

M = molarity ( unit = mol / L or M )

V = volume of solution in liter ( unit = L ),  

n = moles of solute ( unit = mol ),

From the question ,.

V = 350 mL

Since , 1 mL = 10⁻³ L

V = 0.350 L

n = 0.413 mol

Molarity can be calculated as  -

M=\frac{n}{V}

M=\frac{0.413}{0.350}

M = 1.18 mol/L

6 0
3 years ago
How many significant digits are in 12,003,000 A) 8 B) 5 C) 6 D) 3
Ksju [112]

Answer:5

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I've actually not learnt it but i can solve other questions under Maths

5 0
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What is the specific name for the electrons involved in bonding?
Mariana [72]

Answer:

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Answer:

Oxidized,Reduced,reductant,oxidant, NAD+,NADH

Explanation:

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2 when a compound accept electron the compound becomes reduced such a compound often referred to as electron acceptor.

3 In glycolysis once the carbon containing compound that functions as electron donor is reductant.

4 once the electron donor in glycolysis gives up its electron ,it is oxidized to a compound called oxidant.

5 NAD+ is the compound that function as electron acceptor in glycolysis.

6 The reduced form of electron acceptor in glycolysis is NADH.

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Count the total number of atoms in H2O:
arlik [135]

Three. There’s 2 atoms in hydrogen and there’s 1 atom in oxygen.

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3 years ago
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