Define what is the concentration of the zinc

Reference no: EM13238475

The volumes of a solution containing 1.10ppm Zn+2 shown in the table below were pipetted into separatory funnels, each containing 5.00mL of an unknown zinc solution. Each was extracted with three 5-mL aliquots of CCl4 containing an excess of 8-hydroxyquinoline. The extracts were diluted to 25 mL and their fluorescence was measured. What is the concentration of the zinc in the unknown solution?

Volume of Zn standard(mL) = 0,4,8,12,20

Florescence Reading= 6.12,11.16, 15.68, 20.64, 30.76

Reference no: EM13238475

Questions Cloud

Determine the resistance of the bulb : Suppose a light bulb is rated for a voltage of 1.8 V. At this voltage is draws a current of 0.054A, Using Ohm's Law, determine the resistance of the bulb

What would the tension by if both charges were negative : A 8.85 ?C point charge is glued down on a horizontal frictionless table on the right. If is tied to a -6.65, Find the tension in the wire, What would the tension by if both charges were negative

Explain what is the missing gas oxide : XeF6+3H2O-->___+6HF What is the missing gas oxide? I tired to input XeO3 but that was incorrect.

Why the extent to which the goods should be taxed : one reason for government intervention in the economy is to discourage the consuption of goods which have negative externalities. Carefully explain why and the extent to which these goods should be taxed.

Define what is the concentration of the zinc : Each was extracted with three 5-mL aliquots of CCl4 containing an excess of 8-hydroxyquinoline. The extracts were diluted to 25 mL and their fluorescence was measured. What is the concentration of the zinc in the unknown solution?

What is the distance between the two ships : Ships A and B leave port together. For the next two hours, ship A travels at 40.0mph in a direction 55.0, What is the distance between the two ships two hours after they depart

Calculate profit maximizing activity level nd optimal profit : TC= 41,000,000+0.005Q 2 MC= TC/ Q =$500 +0.01Q calculate profit maximizing activity level and optimal profit, and optimal profit as percentage of sales revenue. profit maximization problem

What will be the rate of return eventually earned by firm : There are 300 purely competitive farms in the local dairy market. Of the 300 dairy farms, 298 have a cost structure that generates profits of $24 for every $300 invested. What is their percentage of rate of return.

Estimate of costs and benefits when it is so hard to measure : There is a great deal of uncertainty about how likely it is that we will experience a bio-terrorist attack using smallpox. Does it still make sense to rely on estimates of costs and benefits when it is so hard to measure them

User Account

All Pages