Answer:
Explanation:
Molecules contain two or more atoms and are held together by covalent bonds, whereas compounds are held together by ionic bonds. Two or more elements bonded together through ionic attraction. ... The atoms within a compound also must be different from each other, whereas a molecule can consist of only one element
C. Electron. It’s a negatively charged particle that orbits around the nucleus. Usually, there are multiple electrons going around the nucleus in different orbitals (the circle around the nucleus in which the electron travels). The mass is much smaller compared to that of a proton or neutron and can be ignored when calculating the mass of an atom.
Those are types of water on a pH scale 7.0 and above are alkili water and anything under that is acidic
Answer:
38
Explanation:
19
it is impossible that there is only sperm .egg must be present from female
38
19 from male and 19 from female
it is correct
76
dog has 76 chromosomes
if cat has it will be abnormal due to unequal chromosome
152
also not possible
Answer:
Option A. 4mol/0.800Kg
Explanation:
Data obtained from the question include:
Mole of solute = 4 moles
Mass of water = 0.800Kg
Molality =.?
Molality of a solution is simply defined as the mole of solute per unit kilogram of solvent. Mathematically, it is expressed as:
Molarity = mole of solute / Kg of solvent
With the above formula, we can obtain the molality of KCl solution as follow:
Molality = 4mol/0.800Kg
