Answer:
892 g/mol
Explanation:
Step 1: Given and required data
- Mass of the nonvolatile and a non-electrolyte solute: 11.01 g
- Volume of solution: 158.1 mL = 0.1581 L
- Osmotic pressure (π): 1.91 atm
- Ideal gas constant (R): 0.0821 atm.L/mol.K
- Absolute temperature (T): 298 K
Step 2: Calculate the molarity (M) of the solution
The osmotic pressure is a colligative property that can be calculated using the following expression.
π = M × R × T
M = π / R × T
M = 1.91 atm / (0.0821 atm.L/mol.K) × 298 K
M = 0.0781 M
Step 3: Calculate the molecular weight of the solute
We will use the following expression for molarity.
M = mass of solute / molecular weight of solute × liters of solution
molecular weight of solute = mass of solute / M × liters of solution
molecular weight of solute = 11.01 g / (0.0781 mol/L) × 0.1581 L
molecular weight of solute = 892 g/mol
Flame tests are used to identify the presence of a relatively small number of metal ions in a compound. Not all metal ions give flame colors. For Group 1 compounds, flame tests are usually by far the easiest way of identifying which metal you have got.
Answer:
There is on reason why...
Explanation:
This is one reason astronomers and other scientists use scientific notation when working with very large or very small numbers. Scientific notation is a system for writing and working with numbers that makes it much easier to deal with numbers that are very small or very large.
There you go your awnser
