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3 years ago

How do atoms combine to form extended structure?

Chemistry

2 answers:

torisob [31]3 years ago

6 0

When atoms combine they gain, lose or share electrons in such a way that the outer shells become chemically complete.

wariber [46]3 years ago

4 0

Answer:

lose or share electrons in such a way that the outer shells become chemically complete

Explanation:

Most interactions among atoms take place in the outermost shell of each atom. The number of each electron in this shell determines how an atom combines with other atoms to form compounds. When atoms combine they gain, lose or share electrons in such a way that the outer shells become chemically complete.

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Mixing baking soda and vinegar is an example of an endothermic reaction. This means...

Murrr4er [49]

Answer: think a

Explanation:

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2 years ago

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A sample of an ideal gas has a volume of 2.31 l at 287 k and 1.10 atm. calculate the pressure when the volume is 1.45 l and the

balu736 [363]

Hello!

The pressure of the Ideal Gas when the volume is 1,45 L and the temperature is 298 K is 1,82 atm.

To solve this problem we need to apply the Ideal Gas Law for the initial conditions and the final ones, clearing the equation for the number of moles (n) and the ideal gas constant (R) which remain constant:

$P_n*V_n=n*R*T_n \\ \\ n*R= \frac{P_n*V_n}{T_n}$

Now we match n*R for the initial conditions (1) and the final ones (2), clearing the equation for P₂

$\frac{P_1*V_1}{T_1}= \frac{P_2*V_2}{T_2} \\ \\ P_2= \frac{P_1*V_1*T_2}{T_1*V_2}= \frac{1,10 atm*2,31 L *298 K}{287K*1,45 L}=1,82 atm$

Have a nice day!

7 0

3 years ago

When the following solutions are mixed together, what precipitate (if any) will form? a. FeSO4(aq) 1 KCl(aq) b. Al(NO3)3(aq) 1 B

noname [10]

Answer: Precipitates form only in (b) (c) and (d) and these are $Al(OH)_3$ , $CaSO_4$ and NiS respectively.

Explanation: (a) The reaction will be:

$FeSO_4(aq)+2KCl(aq)\rightarrow FeCl_2(aq)+K_2SO_4(aq)$

The reaction will not take place as both the products are soluble and so no precipitate will form.

(b) The reaction will be:

$2Al(NO_3)_3(aq)+3Ba(OH)_2(aq)\rightarrow 3Ba(NO_3)_2(aq)+2Al(OH)_3(s)$

This reaction will take place as aluminum hydroxide is insoluble. So, the precipitate formed in this reaction is $Al(OH)_3$ .

$CaCl_2(aq)+Na_2SO_4(aq)\rightarrow 2NaCl(aq)+CaSO_4(s)$

This reaction will take place as a precipitate of calcium sulfate(slightly soluble) will form.

(d) The reaction will be:

$K_2S(aq)+Ni(NO_3)_2(aq)\rightarrow 2KNO_3(aq)+NiS(s)$

This reaction will take place as NiS is insoluble. So, the precipitate formed in this reaction is NiS.

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3 years ago

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Which of the following elements has the lowest electronegativity? C F Li O

Rasek [7]

Answer: Li

Explanation:because if you looked at the periodic table you will find that all this elements are in the same row. And you must have known that when you go to the right the electronegativity increases so Li is the lowest one as it is located at the left of this row.

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3 years ago

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Serhud [2]

Answer: universal Solvent

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3 years ago