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1. ### What is the volume of a gas at STP, if 23.4 cm3 of it has a pressure of 109kPa at 67C?

(23.4 cm^3) x (101.325 kPa / 109 kPa) x (273 K) / (67 + 273) K = 17.5 cm^3

1 Answers · Science & Mathematics · 05/06/2019

2. ### (NIST) kinetics database lists the rate constant, k, of a particular gaseous reaction as 6.82× 10–10 cm3·molecule–1·s –1 at 298 K.?

1) (6.82 × 10^–10 cm^3·molecule^–1·s^–1) / (1000 cm^3/L) x (6.022 x 10^23 molecule/mol) = 4.107004...

1 Answers · Science & Mathematics · 14/04/2019

3. ### Help With Chem Homework Please?

Reduction potentials obtained from http://ch302.cm.utexas.edu/echem/echem-cells/selector.php?name=std-red-potentials...

1 Answers · Science & Mathematics · 05/05/2019

4. ### Chemistry dimensional analysis question?

One foot is 12 inches. One inch is 2.54 cm. We can use these two numbers to convert the length, width, and depth to...

4 Answers · Science & Mathematics · 02/09/2019

5. ### If I have 234 multiplied by 24, how many significant figures do I keep on my answer?

...measurement. Suppose that they were the length and width given in cm. NOW you can talk about uncertainty and significant digits. Now we...

2 Answers · Science & Mathematics · 13/09/2019

6. ### What is the predicted absorbance of this solution at 413 nm (λmax) when read in the Shimadzu spectrophotometers in lab?

...^-4 mol/L = 0.16 mM Absorbance = 82.1 mM^-1 cm^-1 (1 cm) (0.16 mM) = 13.1 I assumed a 1 cm path length for...

1 Answers · Science & Mathematics · 13/09/2019

A) (160.5*10^-9 g) / ((13.3 cm^3)*(1.00 g/cm^3)) = 12.067*10 ^-9 .. = 12.07 ppb B) (0.650 km^3)*((10^4 dm)/km)^3*(1 kg/dm^3)*(12.07*10^-9)= 7850 kg C) = (7,850 kg)*(2.61 days)/(42.6 kg) = 480 days or = 1.32 years

1 Answers · Science & Mathematics · 01/10/2019

8. ### a pure titanium cube has an edge length of 2.68in. How many titanium atoms does it contain? Titanium has a density of 4.50g/cm3 .?

(2.68 in)^3 × (2.54 cm/in)^3 × (4.50 g Ti/cm^3) / (47.867 g Ti/mol) × (6.022 × 10^23 atoms/mol) = 1.79 × 10^25 atoms Ti

3 Answers · Science & Mathematics · 11/09/2019

9. ### What would the mass of 1 Liter (1000 mL or 1000 cm3) of hydrogen be?

a milliliter is also one cubic cm. You have 1000 of those units. Multiply the density by 1000 to get the mass.

2 Answers · Science & Mathematics · 29/06/2019

10. ### Dimensional Analysis?

...you know how to do dimensional analysis. First convert the 8.00qt to cm^3 (since both are units of volume) 1 quart is 946.353 cm^3...

4 Answers · Science & Mathematics · 27/08/2019