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1. ### Osmium has a density of 22.63g/cm. The mass of a block of osmium that measures 1.01 cm × 0.233 cm × 0.648 cm is __________ g.?

assuming this block is a cuboid 1.01 cm × 0.233 cm × 0.648 cm = 0.1525 cm³ your density number ...

2 Answers · Science & Mathematics · 19/03/2019

2. ### Chemistry Help!!!?

...454 g) / (1 gal / 3.78 L) = 4.16 × 10^-5 lb/gal 3. (10 ft) / (1 ft / 30.48 cm) = 304.8 cm

3 Answers · Science & Mathematics · 27/09/2018

3. ### Help preparing a HCl solution!?

...dm^3 * 0.1 mol / dm^2 = V (12.076 mol/dm^3) V = 0.00207 dm^3 = 2.07 cm^3 so dissolve 2 cm^3 in some water then dilute to 250 cm^3 When you get a...

3 Answers · Science & Mathematics · 18/09/2018

4. ### A student is given the question: "What is the mass of a gold bar that is 7.379 × 10–4 m^3 in volume? The density of gold is 19.3 g/cm^3."?

a) three b) 1.42 x 10^4 g

1 Answers · Science & Mathematics · 18/09/2018

5. ### Density Problem Help?

I just answered a very similar question, just change the numbers and recalculate: The volume lost is 4570 cm³ – 2140 cm³ = 2430 cm³ (guessing that "lose" means other than the chunk) 2430 cm³ x 21.45 g/cm³ = 52123...

2 Answers · Science & Mathematics · 16/09/2018

6. ### HELP! Chemistry question!?

((23.9 ft) x (12 in/ft) x (2.54 cm/in))^3 x (1.79 g/cm^3) / (11331.0 g/s) / (3600. s/hr) = 16.9637 = 17.0 hr

2 Answers · Science & Mathematics · 15/09/2018

7. ### Stuck on a Chemistry problem (Unit Conversion).?

...m x 1.394 m² = 0.00003484 m³ 0.00003484 m³ x (100 cm/m)³ = 34.84 cm³ 19.3 g/cm³ x 34.84 cm³ = 672.4...

1 Answers · Science & Mathematics · 11/09/2018

8. ### Chemistry Help?

Balloons and gas laws.... First of all, we're stretching it by using balloons (pun intended) to model the gas laws. Balloons make lousy models, but I digress. Volume of a sphere = (4/3) π r³...

2 Answers · Science & Mathematics · 10/09/2018

9. ### Ethylene glycol (antifreeze) has a density of 1.11 g/cm^3. -What is the mass in grams of 387 mL of ethylene glycol?

Density ..... There are two ways to solve these problems. You can use the density equation or you can use the unit-factor method (aka dimensional analysis) since the density is a ratio of two equivalencies, and makes a dandy conversion...

3 Answers · Science & Mathematics · 08/09/2018

10. ### What will be the average density for a sample of metal with a mass of 12.6 g and volume calculations of 10.9 mL and 9.7 cm 3 ?

The question asks for the average density . Calculate each density, and average the two results. Then you have to decide what units to use. I suggest g/cm³. Note: In spite of what you ask in the question , I do not enjoy...

1 Answers · Science & Mathematics · 18/09/2018