The compound X4C3 contains 15.03% carbon. What is the chemical symbol for X ?
use given to get gfw.
36/.1503= {the 36 if from C=1283 and 15.03 comes from % given} then equals to 239.5gfw
(gfw) * (% unknown){unknown 100-15.03}
so, 239.5 * .8497 = 203.5 then divide by 4 because of the X4 = 50.875 about 50.9 V-Vanadium.
Answer: V4C3. is this correct ?????
You would have done well ato just type the question. As it is I don't know where the 36 comes from (you say it is 1283*15.03% but that doesn't tell me where the 1283 comes from.) Nor the 239.5. You answer is plausible but I can't say it is right or wrong.
To find the chemical symbol for X in the compound X4C3, we need to analyze the percentage of carbon in the compound.
1. Start by assuming we have 100 grams of the compound X4C3.
2. Convert the percentage of carbon to grams. Since the compound contains 15.03% carbon, the amount of carbon in 100 grams of the compound is:
100 grams x (15.03/100) = 15.03 grams of carbon
3. Determine the molar mass of carbon (C). Carbon has an atomic mass of approximately 12.01 g/mol.
4. Calculate the number of moles of carbon:
Moles of carbon = Mass of carbon / Molar mass of carbon
Moles of carbon = 15.03 grams / 12.01 g/mol ≈ 1.25 moles
5. Since the compound X4C3 has a 4:3 ratio of X to C, the number of moles of X will be three times the number of moles of carbon:
Moles of X = 3 * Moles of carbon
Moles of X = 3 * 1.25 moles = 3.75 moles
6. Determine the molar mass of X:
Molar mass of X = Mass of X / Moles of X
Molar mass of X = 100 grams / 3.75 moles ≈ 26.67 g/mol
7. Compare the molar mass of X to the atomic masses of known elements to find a match for X. The closest atomic mass to 26.67 is sulfur (S), which has an atomic mass of approximately 32.07 g/mol.
8. Therefore, the chemical symbol for X in the compound X4C3 is S (sulfur).