Answer: 0.33 moles
Explanation:
Given that,
Amount of moles of Na2CO3 (n) = ?
Mass of Na2CO3 in grams = 35g
For molar mass of Na2CO3, use the molar masses as follows:
Sodium, Na = 23g;
Carbon, C= 12g
Oxygen, O = 16g
Na2CO3 = (23g x 2) + 12g + (16g x 3g)
= 46g + 12g + 48g
= 106g/mol
Since, n = mass in grams / molar mass
n = 35g / 106g/mol
n = 0.33mole
Thus, 0.33 moles of Na2Co3 is needed to produce 35g of Na2Co3
Electrolytes are defined as those compounds which <span>conduct electricity by changing into ions when melted or dissolved into a solution.</span>
The molar mass of the components making up Ca(NO₃)₂ are as follows;
Ca - 40 g/mol
N - 14 g/mol
O - 16 g/mol
the molar mass of the compound is calculated as follows;
Ca(NO₃)₂ --> 40 + 2(14 + 16x3)
= 164 g/mol
1 mol of the compound weighs 164 g
Therefore 0.433 mol = 164 g/mol x 0.433 mol
= 71.0g
the mass of 0.433 mol of the compound is 71.0 g
Answer:
Metals are generally shiny, malleable, and hard. ... Example non-metal elements are Hydrogen and Carbon. Metalloids share characteristics of both metals and non-metals and are also called semimetals. Metalloids are typically semi-conductors, which means that they both insulate and conduct electricity.
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Explanation: