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1. ### Pure ethanol(C2H5OH, MW=46.07g/ mol ) has a density of ) 0.789g/ cc .?

5.00 L x 0.514 M = 2.57 mol ethanol 2.57 mol x 46.07 g/ mol = 118.4 g ethanol 118.4 g / 0.789 g/mL = 150 mL of ethanol

3 Answers · Science & Mathematics · 20/10/2009

2. ### Which describes the unit cell of a metal which has an molar mass of 107.6 g/ mol , a density of 13.42 g/cm3, and?

...mass by density to get the volume of one mole of the metal er cc = 107.6/13.42 = 8.0179 cc / mol . 1 mole is Avogadro's Number = 6.023x10^23. ...

2 Answers · Science & Mathematics · 25/02/2013

3. ### How would you prepare 50.00mL of a .500M solution of HCL(aq) from the solution below....?

0.500 M = 0.5 mol /L = 0.0005 mol / cc 50.00 cc * 0.0005 mol / cc = 0.025 mol HCl ... the concentration on the new solution?? 100 cc * 0.0005 mol / cc = 0.05 mol HCl 0.05 mol / 140 cc = 0.000357 mol ...

3 Answers · Science & Mathematics · 15/12/2008

4. ### a metal M of atomic weight 54.94 has a density of 7.42 g/ cc .find apparent volume occupied by one atom of metal

1.152 x 10E-23 cc 54.94g/ mol x 1mole/6.022E23 atoms x 1cc/7.92g E= to the power of (just in case you didn't know)

1 Answers · Science & Mathematics · 29/12/2007

5. ### How to convert 0.153 mol /L to micromole/nanometer^3?

...1 nm = 10^(-9) m = 10^(-6) cm [as 1 m = 1000 cm] 1 nm^3 = 10^(-18) cc = 10^(-21) L 0.153 mol /L = (0.153 * 10^6)/ (10^(-21)) micromole/ cubic nanometre

1 Answers · Science & Mathematics · 14/09/2012

6. ### 4. Liquid butane (C4H10) has a density of 0.60 g/ cc . It burns to make carbon dioxide at 120°C. What volume of?

350 liters = 350000 cc = 0.6*350000 g of butane = 210000 g = 3620.7 moles these make 4 ... 101300 Pa * X = 14482.76 moles * 8.314 J/( mol K) * 393 K X = 467.14 m³

1 Answers · Science & Mathematics · 14/01/2012

7. ### Mg has a density of 1.741 g/ cc . What volume of Mg will burn to produce a kilogram of Magnesium Oxide?

... this is a 1:1 molar ratio so 24.8112 mol Mg x 24.305 g/ mol Mg = 603.0359 g Mg divide this by 1.741 g/ cc to get your answer.

1 Answers · Science & Mathematics · 26/07/2010

8. ### Question on Mols and Changing Units?

...mass to find grams of Al: 595.24 moles Al @ 26.98 g/ mol = 16,060 grams of Al use density to find volume: 16,060 grams of Al @ 2.70 g/ cc = 5948 cc it became a 2 sig fig problem with the data " 2.0 * 10^4...

1 Answers · Science & Mathematics · 17/01/2010

9. ### What is the molarity of H2SO4 solution that has a density of 1.84g/ cc at 35C and contains 98% by weight?

Molar mass of H2SO4 = 98g/ mol = Mm D = density = 1.84g/ cc W/w = 98% V = 1dm3 = 1L = 1000ml = 1000cc Mass of solution...

2 Answers · Science & Mathematics · 05/09/2013

10. ### Knowing that deltaHvap for wather is 40.7 kJ/ mol , calc Pvap of water at 37'C?

... slope by the ratio of (change in y)/(change in x). The slope in the CC equation is simply H/R. Since you already know that Hvap = 40700 J/ mol and R = 8.3145 J/( mol *K), you know what the slope is, in...

2 Answers · Science & Mathematics · 12/08/2010