Answer:
BaCrO₄ will precipitate first.
Explanation:
For a generic salt (AB) that is soluble in some solvent, the solubility product constant (Kps) is:
AB(s) ⇄ A⁺ + B⁻
Kps = [A⁺]*[B⁻]
So, as greater is Kps, as higher is the solubility, and more difficult will be to form a precipitated (the solid form of the salt).
Kps of BaCrO₄ < Kps of BaC₂O₄, so BaCrO₄ will precipitate first.
B
Explanation:
Burning is a chemical change and cutting grass is a physical change
Sr will always have 38 protons because that is its atomic number. Normally Sr has 38 protons and 49 neutrons yielding an atomic mass of 87. unless you are dealing with an isotope of Strontium in which 3 additional neutrons would give you the 53 neutrons in your answer, (38p, 52n).
<u>Ionic Bond</u> is formed when the electronegativity difference is 0.4 > 2.0. Electronegativity is a term that can be defined as a tendency of an atom to attract electron towards its own self.
Explanation:
Electronegativity is a term that can be defined as a tendency of an atom to attract electron towards its own self.
An electronegativity of an atom is affected by
- The atomic number of the atom
- Secondly by the distance at which the valence electron are residing from the nucleus
1. In case the electronegativity difference (which is denoted by ΔEN) is less than 0.5 then the bond formed is known as N<u>onpolar covalent.
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2. In case the ΔEN is in between 0.5 and 1.6, the bond formed is referred to as the<u> Polar covalent
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3. In case the ΔEN is more /greater than 2.0, then the bond formed is referred to as<u> Ionic Bond</u>
<u>2 Examples of Ionic bonds</u>
- The formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom is an example of Ionic bond formation.
- Another example is the formation of NaCl from sodium (Na),which is a metal, and chloride (Cl), which is a nonmetal
Magma can be formed when water flows over the rock making it weaker then under extreme heat and pressure it turns into a liquid state