# intro chem

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how much HCl is needed to dissolve a 2.5grams iron bar on a padlock

## Similar Questions

1. ### chem

I can't seem to figure this out! I know I have to use mass to mass conversions though. Can someone help me out?
2. ### chem

Commerical hydrochloric acid is 37% by mass HCl and has a solution density of 1.18g/mL. What minimum volume of hydrocloric acid is needed to dissolve 16g Al. The balanced equation is 2Al + 6Hcl --> 2AlCl3 + 3H2
3. ### Physics

a 100 g iron bar at 100 C is placed in 200 g of water at 20 C. If specific heat of iron is 0.11 cal/G*c to what final temperature will the iron bar cool?
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a 100 g iron bar at 100 C is placed in 200 g of water at 20 C. If specific heat of iron is 0.11 cal/G*c to what final temperature will the iron bar cool?
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3. Hydrobromic acid dissolves solid iron according to the following reaction: Fe(s) + 2HBr(aq) ---> FeBr2(aq) + H2(g) What mass of HBr (in g) would you need to dissolve a 3.2 gram pure iron bar on a padlock?
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The experiment requires 1 mg per ml of iron (Fe3+). What mass of iron (III) nitrate hexahydrate (Fe(NO3) - 6H2O) would you need to dissolve in 1 litre to achieve this value?
7. ### chemistry

What minimum mass of HCl in grams would you need to dissolve a 2.5g iron bar on a padlock?
8. ### science

A 30-g iron bar at 100degreeC is placed in 200 g of water at 20degreeC. If the specific heat capacity of iron is 0.11 cal/gdegreeC, to what final temperature will the iron bar cool?
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8.5g of sample of iron required just 75cm3 of 3.00M HCl to dissolve it and give a neutral solution.Calculate the percentage purity of the sample of iron.

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