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3 years ago

Where are the most reactive nonmetal elements found on the periodic table?

Chemistry

2 answers:

xz_007 [3.2K]3 years ago

7 0

A. The most reactive Non-metals are found at the top of Group 17 (Halogens) in the form of Fluorine and Chlorine

Marina86 [1]3 years ago

3 0

Answer:

THE ANSWER IS at the top of group 17

Explanation:

Your welcome~! c:

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2HCl+Ca(OH)2⟶CaCl2+2H2O

RUDIKE [14]

Isn’t it just 3 mols?

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2 years ago

Which element is a noble gas?<br> A. W<br> B. Ar<br> C. N<br> D. Er

inessss [21]

His the answer I hope it helps

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3 years ago

A sample of nitrogen gas expands in volume from 16 L to 5.4 L at constant

xxTIMURxx [149]

a. W = 0 J

b. W = - 308.028 J

<h3>Further explanation</h3>

Given

Nitrogen gas expands in volume from 1.6 L to 5.4 L

Required

The work done

Solution

Isothermal :

W = -P . ΔV

Input the value :

a. At a vacuum, P = 0

So W = 0

b. At pressure = 0.8 atm

W = - 0.8 x ( 5.4 - 1.6)

W = -3.04 L.atm ( 1 L.atm = 101.325 J)

W = - 3.04 x 101.325

W = - 308.028 J

6 0

3 years ago

2. (2 pts) How would you prepare 1.5 liters of 2 M KCI (MW=74.55 g/mol)

ra1l [238]

Answer:

Dissolve 226 g of KCl in enough water to make 1.5 L of solution

Explanation:

1. Calculate the moles of KCl needed

$n = \text{1.5 L} \times \dfrac{\text{2 mol}}{\text{1 L}}= \text{3.0 mol}$

2. Calculate the mass of KCl

$m = \text{3.0 mol} \times \dfrac{\text{74.55 g}}{\text{1 mol}}= \text{224 g}$

3. Prepare the solution

Measure out 224 g of KCl.
Dissolve the KCl in a few hundred millilitres of distilled water.
Add enough water to make 1.5 L of solution. Mix thoroughly to get a uniform solution.

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2 years ago

Which statement is best described as a atom

myrzilka [38]

a core of protons and neutrons surrounds by electrons

6 0

3 years ago