Thursday

April 17, 2014

April 17, 2014

Posted by **Mandy** on Tuesday, July 15, 2008 at 7:48pm.

14.92% , 14.91%, 14.88% , 14.91%

the actualy amount of calcium in te sample is 15.70%. What conclusion can you draw about the accuracy and precision of these results?

--im really confused with this problem for some reason. please help me.

- Chemistry -
**DrBob 222**, Tuesday, July 15, 2008 at 8:07pmAccuracy is how close the analyst is to the actual value. The precision is how close the repetitive values are to each other.

- Chemistry -
**shanta**, Tuesday, July 15, 2008 at 8:21pmconsider a .90 M Al(NO3)3 solution. what is the molar concentration of nitrate ion in this solution?

- Chemistry -
- Chemistry -
**DrBob 222**, Tuesday, July 15, 2008 at 8:28pmShanta, please go to the top of the page and click on post a new question. Post a question in your name instead of an answer to another problem. Since there are three nitrate ion per mole of Al(NO3)3, then the nitrtion concn is ??

**Related Questions**

Math. - How do you find the slope of this inequality (to graph it) x/14-85>6...

math - An artifact was found and tested for its carbon-14 content. If 88% of the...

College Math - An artifact was found and tested for its carbon-14 content. If 88...

Math - An artifact was found and tested for its carbon-14 content. If 88% of the...

Math - I dont understand how u can get 3454 from mutiplying 1,100(3.14) When i ...

statistics - Hearing levels or!@#$%^&pit noise in an aircraft can damage the ...

Did i do this right??? STATS - 3. In testing a new drug, researchers found that ...

Physics - How much energy is released in the beta decay of 14 C? Since carbon-14...

Chemistry - When calcium carbonate is added to hydrochloric acid, calcium ...

chemistry - How long will it take for 25% of the C-14 atoms in a sample of C-14 ...