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Sliva [168]
4 years ago
6

How does the periodic table help I’m predicting the formula of a stable ionic compound

Chemistry
1 answer:
WITCHER [35]4 years ago
4 0
The answer is B on edge


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Look at the balanced equation below:
Crazy boy [7]

Answer:

11.5moles of oxygen gas

Explanation:

The reaction equation is shown below;

     C₂H₆O  + 3O₂ → 2CO₂  +  3H₂O

 We were given  11.5moles of H₂O produced;

Since the equation is balanced;

          3 mole of oxygen gas was used to produce 3 mole of water

        11.5 moles of water will be produced \frac{11.5 x 3}{3}   = 11.5moles of oxygen gas

6 0
3 years ago
The bonds of four salts (MgBr2, NaCl, MgCl2, and NaBr) are evaluated for ionic character based on electronegativity differences
sammy [17]

Answer:

MgBr2 < MgCl2 < NaBr < NaCl

Explanation:

In order to determinate ionic character, we have to subtract the electronegativity from the elements involved. This is known as Pauling rule.

MgBr2 > ΔΕΝ = 1.8

NaCl > ΔΕΝ = 2.3

MgCl2 > ΔΕΝ = 2

NaBr > ΔΕΝ = 2.1

6 0
3 years ago
Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions?
hammer [34]
More molecules in the sawdust can collide with oxygen molecules
8 0
3 years ago
Read 2 more answers
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas?
MakcuM [25]

Answer:

The motion of the gas particles is random and in a straight-line. A sample of gas is contained in a closed rigid cylinder.

I hope this helps you if not soo advance sorry :)

3 0
3 years ago
How many molecules are in 25g of Na2SO4? POINTS!! Please help! Im so frustrated.
erik [133]
Hey there!

Molar mass Na2SO4 = <span>142.04 g/mol

Number of moles:

n = m / mm

n = 25 / 142.04

n = 0.176 moles of Na2SO4

Therefore, </span>use the Avogadro constant


1 mole Na2SO4 ------------------- 6.02x10²³ molecules
0.176 moles Na2SO4 ------------   molecules ??


0.176  x  ( 6.02x10²³ ) / 1 

=> 1.059x10²³ molecules of Na2SO4

hope this helps!
6 0
4 years ago
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