Answer:
A and 3
B and 2
C and 1
Explanation:
<em>Ion</em>ic bonding is the transfer of electrons from a cat<em>ion</em> to an an<em>ion</em>.
Covalent bonding is the sharing of electrons between nonmetal atoms.
<em>Metallic</em> bonding is the sea of electrons <em>metal </em>cations.
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The majority of the mass of the atom is located in the nucleus. Remember that the nucleus contains both protons and neutrons and therefore, most of the mass of the atom.
Answer is: b) Na₂SO₄.
Oxidation number of sodium cation is +1 (2·(+1) = +2).
Oxidation number of sulfate anion is -2.
Compounds<span> must be electrically </span><span>neutral.</span>
Sodium sulfate is inorganic compound (salt). Sodium sulfate is white solid substance and highly soluble in water.
Heat is transmitted to the surroundings as follows: molecules collide with the glass, and the glass molecules then transmit that energy to the outside.
<h3>WHAT IS HEAT TRANSFER</h3>
Heat energy is lost when molecules collide in a chemical reaction.
According to this question, a reaction is occuring in a test tube. The reaction involves a collision of molecules that results in the loss of heat energy.
This energy is transmitted to the surroundings as follows when molecules collide with the glass, and the glass molecules then transmit that energy to the outside.
Learn more about heat transfer at: brainly.com/question/12107378
