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Romashka-Z-Leto [24]
2 years ago
9

HELP ME ASAP PLEASE AND THANK YOU

Chemistry
1 answer:
mafiozo [28]2 years ago
7 0
F I think since the one on the worst line is an E so I’m pretty sure it’s F :p
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1.You have three elements, A, B, and C, with the following electronegativity values:
Anna [14]
<span>A ) AB is a compound . Ionic compound because the electronegativity differs a lot in both !
</span><span>
B) Same

C ) Compound . But the bond between them is covalent .
 
D ) AB is an ionic compound . A is the cation and B is the anion </span>
4 0
2 years ago
What is a acid and how does it react with metals (chemical reaction)?
Alenkasestr [34]

Explanation:

Acids are substances whose ph is lower than 7.Acids react with most metals to form a salt and hydrogen gas.

3 0
2 years ago
Plz help me fast plz !!!!!!
Ede4ka [16]

Answer:

I and II      I think

Explanation:

4 0
2 years ago
Read 2 more answers
Determine the limiting reactant (lr) and the mass (in g) of nitrogen that can be formed from 50.0 g n2o4 and 45.0 g n2h4. some p
Licemer1 [7]
                                                   N2O4(l) + 2 N2H4(l) → 3 N2(g) + 4 H2O(g)
1) to calculate the limiting reactant you need to pass grams to moles.
<span> moles is calculated by dividing mass by molar mass
</span>
mass of N2O4: 50.0 g 
molar mass of <span>N2O4 = 92.02 g/mol
</span><span>molar mass of N2H4 = 32.05 g/mol.
</span>mass of N2H4:45.0 g

moles N2O4=50.0/92.02 g/mol= 0,54 mol of N2O4
moles N2H4= 45/32.05 g/mol= 1,40 mol of <span><span>N2H4

</span> 2)</span>
By looking at the balanced equation, you can see that 1 mol of N2O4 needs 2 moles of N2H4 to fully react . So to react  0,54 moles of N2O4, you need 2x0,54 moles of <span>N2H4 moles
</span><span>N2H4 needed = 1,08 moles.
You have more that 1,08 moles </span><span>N2H4, so this means the limiting reagent is not N2H4, it's </span>N2O4. The molecule that has molecules that are left is never the limiting reactant.

3) 1 mol of N2O4 reacting, will produce 3 mol of N2 (look at the equation)
There are 0,54 mol of N2O4 available to react, so how many moles will produce of N2?
1 mol N2O4------------3 mol of N2
0,54 mol N2O4--------x
x=1,62 mol of N2

4) the only thing left to do is convert the moles obtained, to grams.
We use the same formula as before, moles equal to mass divided by molar mass.
moles= \frac{grams}{molar mass}             (molar mass of N2= 28)
1,62 mol of N2= mass/ 28
mass of N2= 45,36 grams

4 0
3 years ago
Helpp please I would really appreciate it!!!​
KIM [24]

Answer:

I got 3/8, hope this helps.

Explanation:

4 0
1 year ago
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