Answer:
The white powder is sodium carbonate
Explanation:
If you supposed an ammount of 100 grams of the white powder, it means there are 42.59 grams of Na, 12.02 grams of C and 44.99 grams of O. If you divided every compound by its molar mass, you will know the moles of every compound. (According to moles=mass (grams)/ molar mass (grams/mole)
C=12.01 g/mole, Na=23 g/mole, O=16 g/mole
So:
C=12.02/12.01= 1.0 moles, Na=42.59/ 23= 1.85 moles, O= 44.99/16= 2.81 moles
Knowing this, we can stimated that the white powder has 1 mol of C and approximately 2 and 3 moles of N and O, respectively
Chemical formula for sodium carbonate is Na2CO3 and the formula for sodium oxalate is Na2C2O4. So the white powder is Na2CO3
Explanation:
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That's correct, it has 9 significant figures
Answer:
The two-dimensional crystal is shown in the attached file.
Explanation:
The two-dimensional crystal that contains six formula units of sodium chloride in the solid state is shown in the attached file. In the two-dimensional crystal, there are ion pointing outward and there are others pointing inward. Each sodium ion in the crystal is surrounded by 6 chloride ions. Similarly, each chloride ion in the crystal is also surrounded by 6 sodium ions. Due to this arrangement, the number six (6) is commonly known as the the coordination number of sodium and chloride ions.
Answer: absorbs food, breaks down food