
Formula mass of CaCO3 is
40 + 12 + 3-100amu....
100g CaCO3 = 1 mole..
50g of CaCO3 = 1÷ 100x 5 = 0.5mole...
<h3>Hence ,answer is 0.5mole...</h3>

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Answer:
Na2Co3
Explanation:
Molar mass: 105.9888 g/mol
Melting point: 851 °C
Answer:
turtles
Explanation:
Turtles eat frogs and no animal in the pond can consume a turtle
Francium is the heaviest of the alkali metals, with an atomic mass of 223 grams.
Compounds are pure substances formed by the combination of elements; they can be decomposed by ordinary chemical means. Baking soda is a compound; it contains the elements sodium, hydrogen, carbon, and oxygen, and it decomposes on heating.