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1. ### a salt contains 1 % KI.if a person takes 2 gram salt everyday then how many numbers of I ion enters to the body?

Mass of KI enter in to body daily=2 gx( 1 / 100 )=.02 g Amount of KI=0.02g/166gmol- 1 = 1 .2x10^-4 mol Number of I enters in to body= 1 .2x10^-4 molx6.022x10^23 mol- 1 =7.25x10^19

2 Answers · Science & Mathematics · 04/05/2011

2. ### How many moles of a gas at 100 °C does it take to fill a 1 .00 L flask to a pressure of 1 .50 atm?

...)/(RT) then just plug in the numbers ... Use T in Kelvins, so here...'s pretty easy since here V = 1 .0, so the calculation reduces to n = ( 1 .5)/(373.15R)

2 Answers · Science & Mathematics · 25/09/2011

3. ### Suppose 0.050 mol of HCl were added to 1 .00 L of the buffer made up of 0.125 M KC2H3O2 and 0. 100 M HC2H3O2.?

..., and [HA] is equal to 0.100M It's pretty easy to plug the numbers into the equation to get a pH of 4.86 The HCl, a very strong...

1 Answers · Science & Mathematics · 16/07/2009

4. ### Osmotic pressure of 1 .85 g of a polymer dissolved in benzene to give 100 mL of solution is 1 .25 kPa at 25oC.?

use the P= MRT formula and plug in numbers , make sure your units agree (in atm, not pka)

1 Answers · Science & Mathematics · 27/06/2013

5. ### match the numbers of significant figures to the value or problem. ?? A. 1 1 .5+3.75 B. 2 7.107 C. 3 100 +150 D. 4 0.903?

A. 1 .5 + 3.75 = 5.3 .... round to the tenths column B. 7.107 == 4 sig figs C. 100 +150 == 300 .... round to the hundreds column* D. 0.903 == 3 sig ...

1 Answers · Science & Mathematics · 02/04/2014

6. ### At 22'C and a pressure of 100 .6 kPa, a gas was found to have a density of 1 .14g/L. What is its molecular mass?

...gas at 295 ºK and 100 .6 kPa occupies 1 liter of volume. How...101.325 kPa pressure? To determine the answer, you need... all the numbers and letters to the...

1 Answers · Science & Mathematics · 11/08/2010

7. ### Calculate the minimum amount of energy needed to vaporize 100 g of H2O at 20 C and 1 arm?

...heat of vaporization is given in kJ/mole, you need to convert mass to moles Then add the two numbers together

1 Answers · Science & Mathematics · 27/10/2015

8. ### You are given 100 grams of a Group 1 Metal Oxide. 74.2 is known to be metal. Name the compound and write the f?

...oxygen has an atomic mass of 100 grams - 74.2 grams...all you do is set up the 2: 1 metal to oxygen molar ratio. Potassium...be right if you had some numbers like this: 78.18 g metal, 94.18...

2 Answers · Science & Mathematics · 27/09/2011

9. ### 100 .0 mL of 0. 1 M nitric acid was added in excess to 1 g calcium carbonate. The excess acid was back titrated with 0.5 sodium hydroxide.?

...it: ( 1 g CaCO3) / ( 100 . g CaCO3/mol) x (2 mol HNO3 / 1 mol CaCO3) = 0.02...quot;0.5 sodium hydroxide" to be "M": (0... something wrong with the numbers given in this question...

1 Answers · Science & Mathematics · 23/03/2018