Answer:
the density of metal is 7.33 g/cm³.
Explanation:
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Given data:
Volume of bar metal = 4.5 cm³
Mass of bar metal = 33 g
Density = ?
Solution:
d = m/v
d = 33 g/ 4.5 cm³
d = 7.33 g/cm³
<h3>Answer:</h3>
SALT
<h3>Explanation:</h3>
Salt is formed by the opposite ions bonded to each other through Ionic Bond. The two ions i.e. Cation and Anions are formed by oxidation and reduction reactions respectively. General dissociation of salt is represented as,
MN → Mⁿ⁺ + Nⁿ⁻
where;
Mⁿ⁺ = Cation
Nⁿ⁻ = Anion
MN = Salt
Following is the list of salts which when when dissociates produces Cations and Anions other than OH⁻ (Hydroxide) and H⁺ (Hydrogen Ion).
Magnesium Sulfate:
MgSO₄ → Mg²⁺ + SO₄²⁻
Sodium Chloride:
NaCl → Na⁺ + Cl⁻
Sodium Carbonate:
Na₂CO₃ → 2 Na⁺ + CO₃²⁻
Ammonium Dichlorate:
(NH₄)₂Cr₂O₇ → 2 NH₄⁺ + Cr₂O₇²⁻
There is no chemical equation to describe what happens when water evaporates because water changing its state/form is a physical change, not a chemical change. All that happens is that the water molecules separate from each other a little bit. A chemical equation requires something to react with another.
Answer:
59.92 × 10²³ atoms are in 9.95 moles of iron
1.8 ×10²² molecules are in 0.03 moles of Carbon dioxide
1.19 moles are found in 7.20 x 10^23 atoms of platinum
Answer:
Explanation:
The modern model recognizes particles in the atom, whereas Dalton's model does not.
