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kap26 [50]
3 years ago
9

____is used as anode for prevention of corrosion 1 aluminium 2 magnesium 3 iron

Chemistry
1 answer:
choli [55]3 years ago
7 0

Answer:

I'm not sure but I think the answer is Cathodic protection.

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A hypothetical metal crystallizes with the face-centered cubic unit cell. The radius of the metal atom is 234 picometers and its
AleksAgata [21]

Answer:

\delta=101.13 g/cm^3

Explanation:

As can be seen in the Figure in a face-centered cubic unit cell you have:

  • Six halves of atoms
  • Eight 1/8 of atom (1 in each corner)

In total:

n_{atom}=6*0.5+8*\frac{1}{8}=4 atoms

Now, each side of the cell is 234 picometers (2.34e-8 cm) long

V_{cell}=L^3=(2.34e^{-8} cm)^3

V_{cell}=1.28*10^{-23}cm^3

Atoms per cm3:

n=\frac{4 atoms}{1.28*10^{-23}cm^3}

n=3.12*10^{23} atoms/cm^3

Expressing in mass:

\delta=3.12*10^{23} atoms/cm^3* \frac{1 mol}{6.022*10^{23}}*195.08 g/mol

\delta=101.13 g/cm^3

6 0
3 years ago
Need help please :'((((((((((
kati45 [8]

Answer:

you work out the moles by finding the grand formula mass them you divide the actual mass by the grand formula mass: 25/160 (my grand formula mass is probably slightly different from yours) which I got 0.15625 then I times it by 32(O2) and I got 5. but my periodic table is different. it's whole numbers. ;-)

Explanation:

4.44

6 0
2 years ago
Select the correct answer.
rodikova [14]

Answer: C

Explanation:

6 0
2 years ago
A student, wearing chemical safety goggles and a lab apron, is to perform a laboratory test to determine the pH value of two dif
Setler79 [48]
They should probably wear gloves. A pH of 2.0 is a very strong acid, and it can easily irritate their hands. They should also remember to NEVER touch their face, mouth, etc. and to keep all chemicals on the laboratory table.
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2 years ago
Which elements would react most easily with each other? (1 point)
DochEvi [55]

Answer: an element with a high electronegativity and an element with a single valence electron

5 0
2 years ago
Read 2 more answers
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