0.02 g of calcium carbonate (CaCO₃)
Explanation:
To solve the question we use the Avogadro's number using the following reasoning:
if 1 moles of calcium carbonate contains 6.022 × 10²³ units of calcium carbonate
then X moles of calcium carbonate contains 12.044 × 10²³ units of calcium carbonate
X = (1 × 12.044 × 10²³) / 6.022 × 10²³ = 2 moles of calcium carbonate
mass = number of moles × molecular weight
mass of calcium carbonate (CaCO₃) = 2 / 100 = 0.02 g
Learn more about:
Avogadro's number
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For the following alkyne structure, the hybridization of each carbon in the molecule is C1 = Sp3, C2=Sp3, C3=Sp, C4=Sp, C5= Sp3
Bond angle=
1)C1-C2-C3= 109 degree 28
2)C2-C3-C4=180 degree
3)C3-C4-C5= 180 degrees
Effective molecular charge order= S> Si> AI> Mg
What is hybridization?
In chemistry, orbital hybridization (or hybridization) is the concept of mixing atomic orbitals to form new hybrid orbitals (having different energies, shapes, etc. than the component atomic orbitals) suitable for electron pairing. Yes, they form chemical bonds through valence bond formation.
Hybridization is defined as the concept of mixing two atomic orbitals to create a new type of hybrid orbital. This mixing usually results in the formation of hybrid orbitals with very different energies, shapes, etc.
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Answer:
D
Explanation:
There are 2 oxygens on the reactants side (OH)2 but 4 on the products side (2H2O). You cannot get 2 oxygens out of nowhere, so it is not balanced.
Answer:
a) will react with water: K
b) will react with steam or acid, but not water: Cr & Sn
d) will not react with water, steam, or acid: Cu
Explanation:
K reacts violently with water.
Cr will react with steam to form an oxide + H gas and will react with most acids
Sn will react with steam to form SnO₂ + H gas and, though it does not react as rapidly as other metals in acid, it dissolves easily in concentrated acids
Cu is an extremely nonreactive metal, which is what makes it so suitable for wiring
molecules collide more frequently.
Chemical reaction mechanisms are based in the collision of molecules with certaing level of energy. More collisions implies grater probablity of reaction.
