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**do**the work here, then explain it:**1**.**99**mole Zn * (6.022 * 10^23/ 1mole.... In order to find the number of atoms in**1**.**99**moles of Zn, multiply that number by Avogadro...1 Answers · Science & Mathematics · 16/12/2012

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 g1 Answers · Science & Mathematics · 09/10/2012

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 mol1 Answers · Science & Mathematics · 09/07/2010

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

...mol KI / 166.0028g) = 0.0119877 mol KI Notice that the grams cancel and you're left with moles. Also, make sure to have the right significant digits (3), which I

**did**not**do**for you.2 Answers · Science & Mathematics · 24/05/2011

Since -log(Kb) = pKb, Kb = 10^-pKb. Kb = 10^-12.01 Kb = 9.77 x 10^-13 Hope this helps.

1 Answers · Science & Mathematics · 26/05/2010

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

really.... 3 grams of it...... all you have to

**do**is divide -**1**.**99**/3..... there are 3 grams total... per gram ...1 Answers · Science & Mathematics · 14/04/2011

...of the partial pressures of each individual gas in the mixture. 77.7 + 19.94 +

**1**.**99**= 99.68kPa. What is the kiloPascal?. The...4 Answers · Science & Mathematics · 19/06/2009

confusing but still i need my 2 pts sorry tho i hope you figure it out

1 Answers · Science & Mathematics · 09/12/2011