1) If 0.5 moles of a mono alkanoic acid weighs 44g,determine the molecular formular. 2) molecular formular =emprical * n. 3) molecular formular = 44*0.5

The molecular formula is not 44*0.5. If 0.5 mol weighs 44 g then a whole mole must weigh 88 g.

An acid has a -COOH group which is 45 so the rest of the molecule must be 88-45 = 43. A -CH3 group is 15 so 43-15 = 28 and CH2 groups are 14 each so the molecular formula must be
CH3CH2CH2COOH. Check it out and see that it adds up to 88.

C3H7COOH

1) To determine the molecular formula, we first need to calculate the empirical formula.

The empirical formula represents the simplest ratio of atoms present in a compound. In this case, we are given that 0.5 moles of a mono alkanoic acid weigh 44g.

2) The molecular formula can be obtained from the empirical formula by multiplying it by a whole number, represented by 'n'.

3) To calculate the molecular formula, we can use the formula:

molecular formula = empirical formula * n

In this case, the empirical formula is not given, so we cannot calculate the molecular formula using this information alone.

To determine the molecular formula of a monoalkanoic acid, we need to use the given information that 0.5 moles of the acid weighs 44 grams.

The molecular formula represents the actual number of atoms of each element present in a molecule of the compound. It can be determined by finding the empirical formula and multiplying it by a whole number constant, denoted as "n".

1) First, we need to calculate the empirical formula. The empirical formula gives the simplest whole number ratio of atoms in a compound. We can do this by finding the molar mass of the compound.

Given:
0.5 moles of the acid weighs 44 grams

2) To find the molar mass of the compound, divide the given mass (44 g) by the number of moles (0.5 moles).
Molar mass = mass / moles
Molar mass = 44 g / 0.5 moles
Molar mass = 88 g/mol

This means that the molar mass of the compound is 88 g/mol.

3) Next, we need to find the empirical formula. To do this, we divide the molar mass of each element in the compound by the molar mass of the compound and simplify it to the nearest whole number.

For a monoalkanoic acid, the empirical formula typically consists of carbon, hydrogen, and oxygen (C, H, O). In this case, we don't have the exact values for carbon (C), hydrogen (H), and oxygen (O), so we're unable to calculate a specific empirical formula.

4) Finally, we can't determine the molecular formula without knowing the empirical formula or having specific data about the number of atoms of each element in the compound.

In summary, based on the given information, we cannot determine the molecular formula of the monoalkanoic acid without additional details about its empirical formula or the specific number of atoms of each element in the compound.