The protons in an nucleus of an atom will not change unless a nuclear reaction takes place. The number of protons is equal to the atomic number of the element. For a neutral atom, the number of electrons and protons are equal. When they are unequal, then the atom occurs as an ion. It will has a net charge with it. The ion O²⁻ has a net charge of negative positive 2 because it has 2 more electrons than its protons. Since neutral oxygen has 8 protons, then O²⁻ ion has 8 protons and 10 electrons.
Explanation:
2AL(OH) +3H CO =AL (CO ) +6H O
3 2 3 2 ( 3 ) 3 2
DOUBLE REPLACEMENT(DR)
Answer:
D
Explanation:
Only some types of waves can move through a vacuum and soundwaves ar not one of them.
Sound waves do not carry matter.
But soundwaves do transfer energy through particles and as I just said, they do not carry matter.
Answer is: the nature of the initial nickel sulfide mixture is a suspension.
Suspension<span> is a </span>heterogeneous mixture (solute<span> particles do not </span>dissolve), <span>that contains </span>solid<span> particles (in this example nickel sulfide or NiS) sufficiently large for </span>sedimentation. <span> The internal phase (solid nickel sulfide) is dispersed throughout the external phase (water).</span>