On the periodic table how many periods are there and how many columns are there
Answers
Related Questions
The largest layer inside the earth is called
11. The density of liquid chloroform is 1.48 g/mL. What is its density in units of lb/in?(2.54 cm = 1 in., 2.205 lb = 1 kg)
The skeletal part of the musculoskeletal system:a.produces facial expressions.b.eliminates wastes from the body.c.protects the organs of the body.d.helps the body to create heat.
What type of ion does an acid produce?
Answers
Answer: Synthesis reaction
Explanation:
Corrosion is the process of slow eating away of metal due to attack of atmospheric gases on the surface of metal resulting into formation of compounds such as oxides, sulfides , carbonates etc is called as corrosion.
Corrosion of iron is called as rusting. Rust is hydrated ferric oxide .
Synthesis reaction is a chemical reaction in which two reactants are combining to form one product.
Answers
Answer:
He sent a cathode ray between electrically changed metal plates.
Explanation:
A P E X
Answer:
He experimented with subatomic particles in cathode tubes to discover protons and electrons.
Explanation:
(2) 194 g/mol (4) 242 g/mol
Answers
The gram-formula mass of Fe(NO₃)₃ is 242 g/mol. Therefore, option D is correct.
Gram-formula mass is also known as the molar mass. It refers to the mass of one mole of a substance. It is expressed in units of grams per mole (g/mol) and is commonly used in chemistry to relate the amount of a substance to its mass.
The atomic mass of Iron= 56 amu.
The atomic mass of Nitrogen = 14 amu.
The atomic mass of Oxygen = 16 amu.
Gram-formula mass of Fe(NO₃)₃ = (Atomic mass of Fe) + 3 × {(Atomic mass of N × 1) + (Atomic mass of O × 3)}
= 56 + 3 × (14 × 1 + 16 ×3)
= 56 + 3 × (14 + 48)
= 56 + 3 × 62
= 56 + 186
= 242 g/mol
Therefore, the gram-formula mass of Fe(NO₃)₃ is 242 g/mol.
Learn more about gram-formula mass, here:
#SPJ6
Gram formula mass is the mass of 1 mol of substance.
the given compound is Fe(NO₃)₃
the molar mass of Fe(NO₃)₃ can be calculated taking the sum of the products of the individual elements by the number of atoms of the element making up the compound.
molar mass of Fe(NO₃)₃ = molar mass of Fe + 3 (molar mass of N + (3 x molar mass of O))
molar mass of Fe - 56, N - 14 and O - 16 g/mol
substituting the values in the above formula
molar mass of Fe(NO₃)₃ = 56 + 3 (14 + (3 x 16) )
molar mass of Fe(NO₃)₃ = 56 + 3 (14 + 48) = 56 + 3(62) = 56 + 186 = 242
therefore molar mass of Fe(NO₃)₃ is 4)242 g/mol
Answers
Answers
Answers
Answer: 2HCl + CaCO3 => CaCl2+ CO2 + H2O
Explanation:
The equation is now balanced.
2 atoms H in both reactant and product side.
Cl have 2 atoms on both sides.
Ca have 1 atom in both sides.
C have 1 atom on both sides and
O have 3 atoms on both reactant and product side