Question

I don't just want the answers can you please show step by step on how you got your answers? it'd be so much help! Thank you.

1. How many mL of 0.550 M HF are needed to prepare 2.00 L of 0.0257 M solution?

2. How many grams of AlCl3 should be used to prepare 600.0 mL of solution containing 0.517M Cl?

For questions 3 & 4: Potentially useful info q=sm∆t , ∆H= q/n

3. A 25.0 g sample of Fe (s= 0.450 J/g°C) at 200.0°C is placed in some water at 12.05°C (s=4.184 J/g°C). If the final temperature is 16.85°C, how much water (in g) was used?

4. A 100 g sample of HCL is dissolved in 100.0g of water at 20.50°c. If the final temperature is 25.40°C, what is the ∆H for this process (in kJ/mol)?

5. Balance the following reaction under acidic conditions. Show phases (s/aq/etc.) for your final answer.

S2O3^-2 + ClO4^-1 ----> SO2+ ClO^-1

I know you can't answer 5 questions, but it'd be much help if you considered it. I have a quiz on these topics tomorrow and I needed help with the practice problems.

Answer 1