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2 years ago

The ability of iron to conduct electricity is a physical property of iron. *

Chemistry

2 answers:

cricket20 [7]2 years ago

4 0

Answer:

physical property

Explanation:

it is physical so is any melting and boiling point

harina [27]2 years ago

4 0

Answer:

True

Explanation:

A physical property is a property that can be measured without changing the chemical composition of the substance.

The chemical composition of iron does not change when it conducts electricity so conductivity is a physical property.

Hope that helps.

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What is the molar mass of 81.50 g of gas

garik1379 [7]

The molar mass of gas = 238.29 g/mol

<h3>Further explanation</h3>

Given

mass = 81.5 g

P=1.75 atm

V=4.92 L

T=307 K

Required

molar mass

Solution

The gas equation can be written

$\large{\boxed{\bold{PV=nRT}}$

$\tt n=\dfrac{mass}{molar~mass}$

So the equation becomes :

$\tt Molar~mass=\dfrac{mRT}{PV}$

Input the value :

$\tt M=\dfrac{81.5\times 0.082\times 307}{1.75\times 4.92}\\\\M=238.29~g/mol$

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Irina-Kira [14]

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Determine the poh of a 0.348 m ba(oh)2 solution at 25°c.

vladimir1956 [14]

<u>Given:</u>

Concentration of Ba(OH)2 = 0.348 M

<u>To determine:</u>

pOH of the above solution

<u>Explanation:</u>

Based on the stoichiometry-

1 mole of Ba(OH)2 is composed of 1 mole of Ba2+ ion and 2 moles of OH- ion

Therefore, concentration of OH- ion = 2*0.348 = 0.696 M

pOH = -log[OH-] = - log[0.696] = 0.157

Ans: pOH of 0.348M Ba(OH)2 is 0.157

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