how would you calculate the number of milliliters of 1 M HCl required for .212 mol of HCl??
and how could i find out what remains in the beaker when distilled water is evaporated in a beaker?
Is that 1 M HCl?
mols = M x L
Substitute the numbers in the problem and solve for liters, then convert to mL by multiplying by 1000.
To calculate the number of milliliters of 1 M HCl required for 0.212 mol of HCl, you can use the formula:
Volume (in liters) = Number of moles / Molarity
First, convert the volume of HCl from liters to milliliters by multiplying by 1000:
Volume (in milliliters) = Volume (in liters) x 1000
Now, let's substitute the given values into the formula.
Number of moles = 0.212 mol
Molarity = 1 M
Volume (in liters) = 0.212 mol / 1 M = 0.212 L
Volume (in milliliters) = 0.212 L x 1000 = 212 mL
Therefore, you would need 212 milliliters of 1 M HCl for 0.212 mol of HCl.
Regarding your second question, to find out what remains in the beaker when distilled water is evaporated, you can follow these steps:
1. Start with a known volume of distilled water in a beaker.
2. Place the beaker on a heat source such as a hot plate or a stove.
3. Apply heat to the beaker, allowing the water to evaporate.
4. As the water evaporates, it will transition from a liquid to a gas, leaving behind any impurities or dissolved substances.
5. Once all the water has evaporated, the remaining substances, such as minerals, salts, or other impurities, will be left in the beaker.
6. To determine what remains, you can visually examine the residue or perform further analysis such as chemical testing or spectroscopy.
It's important to note that the composition of the remaining substances will depend on the purity of the distilled water and any impurities present within it.