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1. ### Chem help?

200. mL = 200. cm^3 1.2 X 200 = 240 g 200 g water -- 40 g Acid 40 X (6.02x10^23)/98 = 2.46x10^23 formula units H2SO4

2 Answers · Science & Mathematics · 22/08/2019

2. ### One cubic centimeters (1.0 cm^3) of mercury has a mass of 0.014 kg at 25 degrees C , find the mass of 3.5m^3 of mercury at 25 degrees C?

1 cubic meter = 10^6 cubic cm 0.014 kg/cm^3 * 3.5 * 10^6 cm^3 => 3.5 * 0.014 * 10^6 kg => 3.5 * 1.4 * 10^(-2) * 10^(6) kg => 3.5 * 1.4 * 10^(4) kg => (7/2) * (7/5) * 10^4 kg => (49/10) * 10^4 kg => 4.9 * 10^4 kg 49000 kg

3 Answers · Science & Mathematics · 31/08/2019

3. ### Commercial hydrochloric acid is 38 percent HCl by mass. The density is of this aqueous solution is 1.19g/cm^3?

(1.19 g/cm^3) x (1000 cm^3 / 1 L) x (0.38) / (36.4611 g HCl/mol) = 12.4 mol...

1 Answers · Science & Mathematics · 21/07/2019

4. ### What is the density (in g/cm^3) of a piece of copper that has a mass of 1.12 oz and occupies a volume of 3.54 mL?

Density .... Convert ounces to grams. Everyone knows that 1 milliliter is equivalent to 1 cubic centimeter. D = m / V D = (1.12 oz x 28.3495 g / 1 oz) / 3.54 cm³ = 8.97 g/cm³ The answer can only be...

5 Answers · Science & Mathematics · 09/07/2019

5. ### Convert 3.89 cubic feet to L (using dimensional analysis)?

1 inch = 2.54 cm 1 cubic inch = 2.54^3 cubic cm 1 cubic foot = 12^3 cubic inches = 12^3 * 2.54^3 cubic cm = (12 * 2.54)^3 cubic cm 12 * 2.54 = 24 + 6 + 0.48 = 30.48 1 cubic foot = 30.48^3...

1 Answers · Science & Mathematics · 11/07/2019

6. ### Chemistry: Dimensional analysis questions?

... = m / V = 5.32 oz x (28.35g / 1 oz) / ((3.1416 x (1.84cm)²(5.29 cm)) D = 2.68 g/cm³ .......... aluminum In this case the you are...

4 Answers · Science & Mathematics · 23/06/2019

7. ### 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

8. ### 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

9. ### Diamond has a density of 3.53 g/cm3. What is the volume of a 3.00 carat diamond ring?

There are exactly 5 carats in 1 gram: (3.00 carats) / (5 carats / g) / (3.53 g/cm^3) = 0.170 cm^3 [And to be fussy: the calculated volume above is for the diamond only, not the ring.]

1 Answers · Science & Mathematics · 02/06/2019

10. ### Plastic Bottles N floating?

...the density for each plastic. If the density is greater than 1 g/cm^3, they will sink in water. If less, they will float. I'm sure you can...

3 Answers · Science & Mathematics · 07/06/2019