Answer:
A
Explanation:
Magnesium.
Magnesium, Zinc and Aluminium are called as Sacrificial Anodes.
They are relatively pure active metals.
the sacrificial anode works by introducing another metal surface with a more negative electronegative and much more anodic surface.
Answer:
m C2H5OH = 191.52 g
Explanation:
∴ %v/v C2H5OH = ( v C2H5OH / v sln)×100
⇒ 48 proof = (2) (%v/v C2H5OH)
⇒ 48/2 = %v/v C2H5OH
⇒ 24 = %v/v C2H5OH
⇒ 24/100 = v C2H5OH / v sln = 0.24
∴ v sln (gin) = 1.00 L
⇒ v C2H5OH = ( 0.24 )( 1.00 L )
⇒ v C2H5OH = 0.24 L = 240 mL
⇒ m C2H5OH = (240 mL)(0.798 g/mL)
⇒ m C2H5OH = 191.52 g
Answer:
Explanation:
Since we aren't told the mass of material we have, let's assume the boss was generous, and precise, and we have 100.00 grams of the mystery compound. We are told only that hydrogen is 5.988% and that the only other two elements are carbon and oxygen, with equal percentages. (100%-5.988%)/2 = 47.006% of each. See the attached table.
We now have the number of grams of each element, so let's convert that into moles of each by dividing the mass by the element's molar mass, The result in the table is
<u>Moles</u>
C 3.91
H 5.99
O 2.94
We need whole numbers for the empirical formula, so round to C4H6O3, the empirical formula. Possibly acetoacetic acid, a metabolite.
Answer:
The number of valence electrons increases from left to right.
Explanation: The number of valence electrons increases going across a period, or row in the periodic table, for example, group 1 elements have 1 valence electrons and group 2 elements have have 2.
1. combustion
2.decompostioni
3.synthesids
4double replacement
5.single replacement