Answer:
The correct answer is option B.
Explanation:
Significant figures :These are figures in a number which expresses the value of the magnitude of a quantity to a specific degree of accuracy is known as significant digits.
Significant digits in the volume measurement 0.010 mL are:
= 2 significant figures
- All non-zero numbers are always significant.
- All zero’s preceding the first integers are never significant.
- All zero’s after the decimal point are always significant.
Answer:
partial negative is O(oxygen) and partial positive is (H) Hydrogens
Explanation:
Because the molecule has covalent bonds, all charges are partial.
Partial negative is O(oxygen) and partial positive is (H) Hydrogens.
Answer:
The equation for the Kinetic Energy, 
, of the photo-emitted electrons is given as follows;
Please find attached the required plot of the kinetic energy versus the frequency
Explanation:
The equation for the Kinetic Energy, , of the photo-emitted electrons is given as follows;
Where:
h = Planck's constant = 6.63×10⁻³⁴ J·s
f = Frequency
BE = Binding Energy = 2.71 eV for Calcium metal
f₀ = Threshold frequency for the material
The ionization energy is the energy required to free an electron from an isolated atom
Answer: Molarity
Explanation:
Molarity
Molarity is the most common concentration unit involved in calculations dealing with volumetric stoichiometry. Molality (m): This unit of concentration relates the moles of solute per kilogram of solvent.
