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1. ### A slab of lithium weighs 1301 mg and has sides that are 24.0 mm x 11.7 mm by 11.1 mm.?

(24.0 mm x 11.7 mm x 11.1 mm) = 3116.88 mm^3 = 3.11688 cm^3 (1301 x 10^-3 g) / (3.11688 cm^3) = 0.417 g/cm^3 The density of 986 mg...

1 Answers · Science & Mathematics · 28/05/2019

2. ### Biochemistry lab math help!?

So using the Delta A and the extinction coefficient gives: 0.00324 DeltaA/s / 3600 M-1 = 9X10^-7 M/s X 10^6 umol/mole = 0.9 micromol / L / s Now, you need to multiply this by the volume of the reaction mixture in L to get straight...

1 Answers · Science & Mathematics · 09/05/2019

3. ### barometric pressure is 749 mmHg. Calculate the barometric pressure in centimeters of water (d of Hg = 13.5 g/mL; d of H2O = 1.00 g/mL).?

...5 times as tall so 749 mmHg * 13.5 mmH2O/mmHg * 1 cm / 10 mm = 1011 cmH2O When you get a good response, please consider ...

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

4. ### 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

5. ### What current would be required to deposit 2.08 m2 of chrome plate having a thickness of 0.037 mm in 4.50 hr from a solution of H2CrO4?

...of Cr deposited = (2.08 × 100² cm²) × (0.037/10 cm) = 76.96 cm³ Mass of Cr deposited = (76.96 cm³...

1 Answers · Science & Mathematics · 01/05/2019

6. ### A metal (FW 396.8 g/mol) crystallises into a body-centered cubic unit cell and has a radius of 2.26 Angstrom.?

... density is (1.3178/1.4215) x 10^4 (kg/m^3) = 9270.4 kg/m^3 = 927 g/cm^3. My only beef with Fern's answer is that it is...

2 Answers · Science & Mathematics · 28/05/2019

7. ### (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