That's false. A melting point is hot/warm, while the freezing point is cold.
Answer : The mass of sodium sulfate needed is 5.7085 grams.
Explanation : Given,
Concentration of sodium ion = 0.148 mol/L
Volume of solution = 2.29 L
Molar mass of sodium sulfate = 142 g/mole
First we have to determine the moles of sodium ion.
Now we have to calculate the moles of sodium sulfate.
The balanced chemical reaction will be,
As, 2 moles of sodium ion produced from 1 moles of 
So, 0.08035 moles of sodium ion produced from 
moles of
Now we have to calculate the mass of sodium sulfate.
Therefore, the mass of sodium sulfate needed is 5.7085 grams.
he total number of each of the atoms on the left and the right are the same thus the reaction equation is balanced.
<h3>What is the law of conservation of mass?</h3>
The law of conservation of mass states that, mass can neither be created nor destroyed. In view of the law of conservation of mass, the total mass of the reactants on the left-hand side must be the same as the total mass of products at the right hand side.
Thus is the total mass of the reactants and the products are not the same, it then follows that the reaction does not demonstrate the law of conservation of mass. In this case, the total number of each of the atoms on the left and the right are the same thus the reaction equation is balanced.
Learn more about conservation of mass:brainly.com/question/13383562
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Answer:
1- ions
Explanation:
Non-metals in group 17 on the periodic table most commonly forms -1 ions with other chemical species.
This is because of their atomic structure
Group 17 is made up of halogens which are fluorine, chlorine, bromine, iodine and astatine.
Because each of the elements has seven electrons in the outer shells of their atoms which implies that they lack one electron to become an octet, the elements are all univalent and also acceptors of electrons.
