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Pepsi [2]
3 years ago
6

HELP PLZ ANSWER ASAP!! 30 points!!

Chemistry
2 answers:
cricket20 [7]3 years ago
6 0

Answer:

Explanation:

5

eduard3 years ago
5 0
5.0 x 10 ^1 mL
Explanation:
M1V1 = M2V2
(0.25 M) (400 mL) = (2.0 M) V2
Divide both sides by 2.0 M
V2 = (0.25 M*400mL)/2.0 M
Molarity’s cancel out
V2 = 5.0 x 10^1 mL
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What is the mass of a neutron?<br><br> 1/2,000 amu<br> 1 amu<br> 2,000 amu<br> 1/200 amu
pashok25 [27]

Vas happenin!!



1 amu is the correct answer


Hope this helps


-Zayn Malik
8 0
3 years ago
Read 2 more answers
Consider the reaction 2 al + Fe2O3 to 2Fe + Al2O3. If 60.0g of Al is reacted with excess Fe2O3, determine the amount (in moles)
olganol [36]

 The  amount  of  Al2O3  in moles=  1.11 moles    while in  grams   = 113.22 grams


    <em><u>calculation</u></em>

     2 Al  + Fe2O3 → 2Fe  + Al2O3

    step  1: find the moles of Al  by  use of <u><em>moles= mass/molar  mass  </em></u>formula

    =  60.0/27= 2.22  moles


    Step 2: use the mole ratio to determine the  moles of Al2O3.

 The  mole ratio  of Al : Al2O3 is  2: 1 therefore the moles of Al2O3= 2.22/2=1.11  moles


Step 3:    finds the mass  of  Al2O3  by us of  <u><em>mass= moles x molar mass</em></u><em> </em>formula.

The molar  mass of Al2O3  =  (2x27)  +( 16 x3) = 102  g/mol

mass is therefore=  102  g/mol  x 1.11= 113.22 grams


             

7 0
3 years ago
how many electrons occupy the pz atomic orbital in Hg? the answer is 10 and it is right but i do not understand why.
MariettaO [177]
Im no sure what it is i just love helping little boys out. at this age it gives me a thrill.
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3 years ago
Why does group 18 in the periodic table not form ions?
alukav5142 [94]
Lets take a moment to list all the characteristics of the group 18 (also known as noble gases and/or group 8) elements: 
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Now.. lets take some time to think about why elements want to form ions: 

Elements form ions to either gain or lose valence electrons to the element they bond with. This helps them GAIN a full octet. What is a full octet, you may ask? An octet is when an element has all 8 valence electrons and is stable, making it nonreactive. 

Why would an element with a full octet want to bond? It already has a full octet, it does not need to bond. 

That, my fellow Brainly user, is why the noble gases do not need to bond. 

I really do hope this helps! Enjoy, and good luck on the studies. 
4 0
2 years ago
Which shows the correct order of steps during the formation of an ionic bond?
IRISSAK [1]

The correct order of steps during the formation of an ionic bond

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<h3>What is Ionic bonding?</h3>

This is the type of bonding which occurs as result of transfer of electrons

and is also regarded as electrovalent bonding.

When the electrons are transferred , ions form which then gets attracted

to each other and results in the formation of a compound.

Read more about Ionic bonding here brainly.com/question/13526463

6 0
2 years ago
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