C10H8, is the substance present in some mothballs. Its vapor pressure at 25 degrees celsius is 0.300 mmHg.  a) how many milligrams of naphthalene will sublime into an evacuated 1.000 L flask? b) if 0.700 mg of naphthalene is used, what will the final pressure be? What physical state(s) of naphthalene is (are) in the flask? c) if 4.00 mg of naphthalene is used, what will the final pressure be? What physical state(s) of naphthalene is (are) in the flask?

A 0.470 g sample of a metal, M, reacts completely with sulfuric acid according to M(s) + H2SO4 (aq) →MSO4 (aq) + H2(g) A volume of 217 mL of hydrogen is collected over water; the water level in the collecting vessel is the same as the outside level. Atmospheric pressure is 756.0 Torr, and the temperature is 25 \deg C. The vapor pressure of water at 25 \deg C is 23.8 Torr. Calculate the molar mass of the metal.

Four liquids are described in the table below. Use the second column of the table to explain the order of their freezing points, and the third column to explain the order of their boiling points. For example, select '1' in the second column next to the liquid with the lowest freezing point. Select '2' in the second column next to the liquid with the next higher freezing point, and so on. In the third column, select '1' next to the liquid with the lowest boiling point, '2' next to the liquid with the next higher boiling point, and so on. Note: the density of water is 1.00 g/mL. solution freezing point boiling point 2.7 g of potassium sulfate (K2SO4) dissolved in 100. mL of water (choose one) (choose one) 2.7 g of nitric acid (HNO3) dissolved in 100. mL of water (choose one) |(choose one) - 2.7 g of glycerin (C3H8O3) dissolved in 100. mL of water (choose one) (choose one) v 100. mL of pure water (choose one) |(choose one) v ?

Four liquids are described in the table below. Use the second column of the table to explain the order of their freezing points, and the third column to explain the order of their boiling points. For example, select '1' in the second column next to the liquid with the lowest freezing point. Select '2' in the second column next to the liquid with the next higher freezing point, and so on. In the third column, select '1' next to the liquid with the lowest boiling point, '2' next to the liquid with the next higher boiling point, and so on. Note: the density of water is 1.00 g/mL. solution freezing point boiling point (choose one) ↑ 6.7 g of potassium iodide (KI) dissolved in 350. mL of water (choose one) O (choose one) (choose one) ↑ 6.7 g of hydroiodic acid (HI) dissolved in 350. mL of water 6.7 g of sucrose (C₁2H22011) dissolved in 350. mL of water (choose one) (choose one) î 350. mL of pure water (choose one) ✪ (choose one) × Ś ?

Four liquids are described in the table below. Use the second column of the table to explain the order of their freezing points, and the third column to explain the order of their boiling points. For example, select '1' in the second column next to the liquid with the lowest freezing point. Select '2' in the second column next to the liquid with the next higher freezing point, and so on. In the third column, select '1' next to the liquid with the lowest boiling point, '2' next to the liquid with the next higher boiling point, and so on. Note: the density of water is 1.00 g/mL. solution 6.0 g of ethylene glycol (C₂H6O2) dissolved in 200. mL of water 6.0 g of potassium sulfate (K₂SO4) dissolved in 200. mL of water 6.0 g of sucrose (C12H22011) dissolved in 200. mL of water 200. mL of pure water freezing point ✓ (choose one) 1(lowest) 2 3 4(highest) (choose one) X boiling point (choose one) (choose one) (choose one) (choose one) Ś

Pick the liquid with the lowest freezing point:  SiH4(l), CH4(l), H2S(l)

Can someone help with this please and thank you

Four liquids are described in the table below. Use the second column of the table to explain the order of their freezing points, and the third column to explain the order of their boiling points. For example, select '1' in the second column next to the liquid with the lowest freezing point. Select '2' in the second column next to the liquid with the next higher freezing point, and so on. In the third column, select '1' next to the liquid with the lowest boiling point, '2' next to the liquid with the next higher boiling point, and so on. Note: the density of water is 1.00 g/mL. solution freezing point boiling point 2.0 g of ethylene glycol (C2H602) dissolved in 300. mL of water (choose one) (choose one) 2.0 g of potassium acetate (KCH3CO2) dissolved in 300. mL of water (choose one) (choose one) 2.0 g of glucose (C6H1206) dissolved in 300. mL of water (choose one) (choose one) 300. mL of pure water (choose one) (choose one)

Four liquids are described in the table below. Use the second column of the table to explain the order of their freezing points, and the third column to explain the order of their boiling points. For example, select '1' in the second column next to the liquid with the lowest freezing point. Select '2' in the second column next to the liquid with the next higher freezing point, and so on. In the third column, select '1' next to the liquid with the lowest boiling point, '2' next to the liquid with the next higher boiling point, and so on. Note: the density of water is 1.00 g/mL. solution freezing point boiling point 6.4 g of glucose (C6H1206) dissolved in 300. mL of water (choose one) O (choose one) 6.4 g of potassium sulfate (K2SO4) dissolved in 300. mL of water (choose one) (choose one) O 6.4 g of sodium bromide (NaBr) dissolved in 300. mL of water (choose one) (choose one) O 300. mL of pure water (choose one) E (choose one) E