Answer:
the first option, tasting a pasta sauce after adding a new ingredient.
Explanation:
tasting a pasta sauce after adding a new ingredient is not an observation because there is no qualitative or quantitative data to be taken from that experience.
The three sub-atomic particles that made up an atom are electron, proton and neutron. The proton and neutron are present in the nucleus of an atom whereas electrons revolve around the nucleus in the orbits. The atoms are electrically neutral that is they have no charge due to the presence of equal number of protons (which is positively charged) and electrons (which is negatively charged).
All the atoms have negatively charged electrons which are counter balanced by the presence of equal number of protons in the nucleus of an atom and thus, the element is neutral in nature and possess no charge.
Answer:
Lactobacillus (a bacterium) of lactic acid.
Answer is: molar solubility of nickel(II) carbonate is 3.77·10⁻⁴ M.
Chemical reaction:NiCO₃(s) → Ni²⁺(aq) + CO₃²⁻(aq).
Ksp = 1.42·10⁻⁷.
s(NiCO₃) = ?M.
s(NiCO₃) = s(Ni²⁺) =s(CO₃²⁻) = x.
Ksp = s(Ni²⁺) · s(CO₃²⁻).
Ksp = x · x.
1.42·10⁻⁷ = x².
x = √1.42·10⁻⁷ = 3.77·10⁻⁴ M.
