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xeze [42]
3 years ago
12

What is the name for Na20?

Chemistry
2 answers:
Sedbober [7]3 years ago
4 0
The name for Na2O is Disodium Oxide 
Kobotan [32]3 years ago
3 0
It is called disodium oxide :) 
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How much work (in JJ) is required to expand the volume of a pump from 0.0 LL to 2.5 LL against an external pressure of 1.1 atmat
stira [4]

Answer:

- 278.85 J  

Explanation:

Given that:

Pressure = 1.1 atm

The initial volume V₁ = 0.0 L

The final volume V₂ = 2.5 L

The work that takes place in a reaction at constant pressure can be expressed by using the equation:

W = P(V₂ - V₁ )

Since the volume of the gas is expanded from 0 to 2.5 L when 1.1 atm pressure is applied. Then, the work can be given by the expression:

W = - P(V₂ - V₁ )

W = -1.1 atm ( 2.5 - 0.0) L

W = -1.1 atm (2.5 L)

W = -2.75 atm L

Recall that:

1 atm L = 101.4 J

Therefore;

-2.75 atm L = ( -2.75 × 101.4 )J

= -278.85 J  

Thus, the work required at the chemical reaction when the pressure applied is 1.1 atm  = - 278.85 J  

8 0
3 years ago
Magnesium oxide is a binary ionic compound. From the formula MgO, how do you know that Mg is the metal?
hammer [34]

Answer:

See below.  

Step-by-step explanation:

<em>Method 1: </em>

You know that oxygen is a <em>non-metal. </em>

If the compound is ionic, the oxygen must be combined with a <em>metal</em>.

The Mg must be a metal.

<em>Method 2:</em>

In the formulas of ionic compounds, the positive ion (usually a metal) is written first.

8 0
3 years ago
229th
Gelneren [198K]

Answer:

o thats pretty cool for points its a new moon

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An ion of which element has a larger radius than an atom of the same element ?
Deffense [45]
The ion has a larger radius compare to that of its neutral form. Let's take for example chlorine. Neutral chlorine has 17 electron. The ion chlorine or Cl- has an addition 1 electron, hence the negative charge. The neutrons in chlorine can not tightly hold all 18 electron as compared to 17 electron. 
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Kinetic molecular theory states... (choose all that apply)
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