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1. ### Chapter 1 Chem help!?

1 ) 10 cm = 1 dm 10^3 cm^3 = 1 dm^3 So, 2.730 dm^3 ( 1000 cm^3 / 1 dm^3) = 2730 cm^3 2) 100 cm = 1 m 10000 cm^2 = 1 m^2 So, 20.0 cm^2 ( 1 m^2 / 10000 cm^2) = 0.002 m^2 3) "deka-" = 10. So, 0.6 dekabars...

1 Answers · Science & Mathematics · 13/11/2013

2. ### i can not anderstand why is whrite here, 1 percent of 210 is 2, 1 ?

1 % of 210 is 1 out of 100 parts of 210, or in other words, 1 /100 of 210. 1 /100 of 210 is 1 /100 times 210, or 1 /100 of 200 plus 1 /100 of ten (I got this by distributing ( 1 /100(200...

2 Answers · Science & Mathematics · 31/10/2012

3. ### [H3O^+] = 3.68 x 10^- 1 ?

1 . Is it acidic To answer this you must get the pH pH = -log[H3O+] pH = .434 VERY acidic So 1 is true. 2. [H3O+] < [OH-] To answer this...

2 Answers · Science & Mathematics · 21/07/2016

4. ### what is 1 ,300 ml in......................?

1 ,300 mL of what? Milliliters are used to measure volume... (either Kelvin or centigrade). Water has a density of 1 gram per milliliter, so you have 1 ,300 grams of water. The specific heat...

1 Answers · Science & Mathematics · 30/01/2010

5. ### help.. MnO4 - 1 ......?

The - 1 charge is the overall charge of the molecule. Mn can have different oxidation...sum of their oxidation states is equal to the overall charge (- 1 in this case). So we can solve for the oxidation state of Mn like this...

1 Answers · Science & Mathematics · 16/12/2008

6. ### 1 mole does not equal 1 gram?

NO NO NO.. 1 mole is NOT 1 gram 1 mole is NOT mass in grams..... (it doesn't have to be in grams) and .. atomic mass = the mass of 1 atom .. molecular mass = the mass of 1 molecule molar mass is NOT the same...

6 Answers · Science & Mathematics · 24/02/2014

7. ### Chemistry 1 ?

Take 22.4 L at STP, you know that is 1 mole of Kr atoms Calculate the volume of 1 atom (hint, convert...

1 Answers · Science & Mathematics · 04/12/2014

8. ### 0. 1 litres of a 0. 1 M solution of sulphuric acid (H2SO4) contains how many moles of H3O+?

O. 1 L of O. 1 M solution of H2SO4 will dissociate completely in... large Ka. So Just multiply the molarity to the volume o. 1 x o. 1 that will give you 0.01. Thats the number of moles of...

3 Answers · Science & Mathematics · 13/04/2011

9. ### Which of the following has 1 .2 × 10^24 hydrogen atoms?

Step 1 : Find the mole ratio for each of the choices, and then multiply mole ratio...'s number (6.022 x 10^23), so you will have this for each choice 1 mole H2O ( ratio /ratio) (6.022 x 10^23 / 1 mole) = atoms One...

4 Answers · Science & Mathematics · 22/01/2010

10. ### Half life of t( 1 /16)??

1 ) for a first order rate law such as rate = k[A] yields the equation...half life is when [A]o / [A]t = 2 (the conc at time t is 1 /2 of the conc at t=o) ln(2) = kt 0.693 = kt, so the rate constant k = 0.693 / t1...

1 Answers · Science & Mathematics · 22/10/2007