Answer:
The electrons in H2O are not shared equally, making it a polar molecule. The molecules in flourine, F2, are shared equally, making it not a polar molecule.
Explanation:
Hypertonic" is the one among the following choices given in the question that is a solution used for salad dressing.
Explanation:
A hypertonic solution is a special type of solution that has a greater concentration of solutes on the outside of a cell when associated with the inside of a cell.as a result, water inside the cell will move outwards to attain equilibrium, creating the cell to shrink.
The answer is A the heat is removed because it’s freezing and now the lemonade is frozen which makes a solid
Answer:
2 and 4 so B) II and IV
Explanation:
I false ... stirring speeds up the rate of dissolution because it increases surface area . II is true , III false ... heating up speeds up the rates of dissolution , IV is true .
Answer:
We need 25.3 mL of KOH
Explanation:
Step 1: Data given
Mass of potassium hydroxide (KOH) = 0.0284 grams
Molarity of KOH = 0.0200 M
Molar mass of KOH = 56.106 g/mol
Step 2: Calculate moles of KOH
Moles KOH = mass KOH / molar mass KOH
Moles KOH = 0.0284 grams / 56.106 g/mol
Moles KOH = 5.06 *10^-4 moles
Step 3: Calculate volume needed
Molarity KOH solution = moles KOH /volume
Volume = moles KOH / molarity KOH
Volume = 5.06 * 10^-4 moles / 0.0200 M
Volume = 0.0253 L = 25.3 mL
We need 25.3 mL of KOH
