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How many molecules are there in 9.3 mol of NaCl?

The eagle population in arizona is increasing at a rate of 2.5% per year. there are 240 eagles this year. Determine how many eagles will be in Arizona in 8 years.

#12. Bill and 3 friends went to Red Robin. Their order consisted of 2 hamburgers at $ 5.49 each, a chicken sandwich for $ 6.25, an order of ribs for $ 12.99, and 4 sodas at $ 1.75 each. They paid a 7% sales tax, and a 20% tip. How much money did lunch cost each person if they split the bill evenly?

Chemistry question above: it's a free-response question.

 

He mixes exactly 235.0 mL of 0.600 M HCl with 7.472 g .

Missy deposits $515 in an account earning 3% interest compounded annually and keeps the money in the account for 4 years. Sally deposits $500 in an account that earns 5.4% interest compounded annually and keep the money in the account for 2 years.  Who has more money when she closes her account?