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1. ### Determine the number of atoms in 1 . 99 mol Zn. And how do you solve these these types of problems?

I will do the work here, then explain it: 1 . 99 mole Zn * (6.022 * 10^23/ 1mole) = 1 .198 * 10^24 ... order to find the number of atoms in 1 . 99 moles of Zn, multiply that number by ...

1 Answers · Science & Mathematics · 16/12/2012

2. ### If you needed to prepare 1 . 99 liters of a 0.55 M solution of NaOH, how many grams of NaOH do you need?

MV = mass / molar mass (0.55 mol/L) ( 1 . 99 L) = x / 40.0 g/mol x = 43.78 g Rounded off to two sig figs, 44 g

1 Answers · Science & Mathematics · 09/10/2012

3. ### If 1 . 99 g of solid magnesium reacts with 100.0 mL of 3.00 M hydrochloric acid, what volume of hydrogen gas is?

Mg + 2 HCl → MgCl2 + H2 ( 1 . 99 g Mg) / (24.30506 g Mg/mol) = 0.081876 mol Mg (0.1000 L...

1 Answers · Science & Mathematics · 30/10/2012

4. ### how many moles of H2O are in 1 . 99 x 10^25 molecules of H2O?

a mole is 6.022 x 10^23 particles. particles include atoms or molecules. so in this example we divide 1 . 99 x 10^25 by 6.022 x 10^23 = 33.0 mol

1 Answers · Science & Mathematics · 09/07/2010

5. ### What is the Normality of HCL , does HCL 1 N mean it is 1 percent HCL and 99 Percent water ?

N means normality which is equivalents per liter for acids 1 equivalent = 1 mole of H+ therefore 1 N HCl = 1 M HCl thus you have 1 mole/liter HCl

2 Answers · Science & Mathematics · 29/07/2010

6. ### Nuclear Balanced Equation?

92 U 235 + 0n1 ===> 40 Zr 99 + 52 Te 135 + 2 0n1 The atomic numbers must balance on each side. The atomic mass numbers must balance on each side.

1 Answers · Science & Mathematics · 18/10/2011

7. ### I have 1 . 99 grams of potassium Iodide. How many moles is this?

...iodide = 126.9045 g/mol so total = 166.0028g/mol KI ( 1 . 99 g KI)( 1 mol KI / 166.0028g) = 0.0119877 mol KI Notice...sure to have the right significant digits (3), which I did not do for you.

2 Answers · Science & Mathematics · 24/05/2011

8. ### What is the wavelength of a radio station transmitting at 99 . 1 MHz?

....C. based modern Rock FM radio station) is 99 . 1 Mhz. That's where you'll actually find the station on your...

2 Answers · Science & Mathematics · 08/11/2007

9. ### bond with an electronegativity difference of 2.01 is classified as ionic, whereas one with an..?

... for Oxygen is 2. In reality, 1 . 99 is almost the same with 2. But 2.01 is bigger than 2...

1 Answers · Science & Mathematics · 23/04/2012

10. ### how do you round 1 .997?

... have 1997 rounded to its most significant digits 1 9 and 9. It would either round up to 2000 or down to 1990. Because the...

5 Answers · Science & Mathematics · 07/12/2008