Description : Which one of the following is largest? w) the number of molecules in 2 grams of hydrogen gas x) the number of molecules in 60 grams of lead sulfate y) the number of molecules in 20 liters of oxygen gas at standard temperature and pressure z) the population of the United States
Last Answer : ANSWER: A - THE NUMBER OF MOLECULES IN 2 GRAMS OF HYDROGEN GAS
Description : A cylinder contains oxygen at a pressure of 10 atm and a temperature of 300 K. The volume of the cylinder is 10 liters. What is the mass of the oxygen in grams? Molecular weight (MW) of oxygen is 32 g/mole? a. 125.02 b. 130.08 c. 135.05 d. 120.04
Last Answer : 130.08 {(10atm)(10)(32)/(0.0821) (300K)}
Description : What will be the volume of CO2 at NTP obtained on heating 10 grams of (90% pure) limestone [Pb. CET 2001] (A) 22.4 litre (B) 2.016 litre (C) 2.24 litre (D) 20.16 litre
Last Answer : (B) 2.016 litre
Description : a gas has a pressure of 766.7 torr at a temperature of 10.0°C. the sample contains 2.35 moles of xenon. what is the volume of the gas in liters?
Last Answer : Using PV=nRT, 10.0ºC = 283.15ºK, R = 62.36 L torr/mol KV= (nRT)/PV = (2.35m*(62.36 L torr/mol K)*283.15ºK)/766.7 TorrV = 54.12 L
Description : Liters, meters, grams: Do you use the metric system when communicating with an international audience?
Last Answer : i never switch to metric when communicating with an international audience, which i do every day at work (i'm an english teacher to mostly university-aged or older students). i guess i just think, ... in hell i could ever convert all those numbers in real time to make any of it meaningful anyway.
Description : 1 gram = how many liters ? 1 gram = how many liters ? 16 grams = how many liters ?
Last Answer : grams = 0.001 liters * 168 grams = 0.168 liters.
Description : What is 0.2 liters in grams?
Last Answer : Need answer
Description : Most vitamins are measured in ____. a. milligrams c. liters b. grams d. kilograms
Last Answer : a. milligrams
Description : A sample of NO experiences a change in pressure from 0.5734 atm to 5.1663 atm. If its new volume is 89.811 L, what was its original volume in liters ____ L?
Last Answer : 809.2(Explanation): boyle's law of PV=PV for this problem. Plug in values we know, (the pressures and new volume) to get 0.5734V=(5.1663)(89.811). Now solve for V by dividing by 0.5734 on both sides. You get 809.1917846. Round to 4 sig figs to get 809.2.
Description : The temperature of O2 is changed from -48.03 °C to 235.59 °C. If its new volume is 29.164 L, what was its original volume in liters ______ L?
Last Answer : 12.90(Explanation): use charle's law for this one. V/T=V/T. we know the temperatures in both scenarios, and we're trying to solve for the volume in the beginning. Remember temperature in Kelvin! So, plug in ... Now, divide by 508.59 on both sides to get 12.90042093. Round to 4 sig figs, 12.90 DONE!
Description : Which of the following is the best example of law of conservation of mass? [NCERT 1975] (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2. (B) When 12 g of carbon is ... mass remains unaltered. (D) The weight of a piece of platinum is the same before and after heating in air.
Last Answer : (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2.
Description : The molar volume of which two elements is the same at standard temperature and pressure? w) fluorine and bromine x) fluorine and iodine y) fluorine and chlorine z) bromine and iodine
Last Answer : ANSWER: Y -- FLUORINE AND CHLORINE
Description : At what centigrade temperature will 1 mole of a gas under 1 atmosphere of pressure occupy 22.4 liters?
Last Answer : ANSWER: ZERO DEGREES CENTIGRADE
Description : What is the mass in grams of 2.0 moles of co2?
Description : If you start with 32 grams of CH4 and react it with O2 to form 88 grams CO2 and 72 grams H2O. How much O2 in grams was consumed?
Last Answer : 128 g of oxygen are needed.
Description : When 9.OO g C6H12O6 burns with excess oxygen how many grams of CO2 will be made?
Last Answer : 13,19 g carbon dioxide are obtained.
Description : How many molecules of an ideal gas are there in 22.414 liters at 10 atmospheres pressure and 0 degrees C?
Last Answer : ANSWER: 6.02 x 1024 (or accept 10 x AVAGADRO'S NUMBER)
Description : 2.6272 mol of Ne is held at 2.0999 atm and 653.33 °C. What is the volume of its container in liters ____ L?
Last Answer : 95.149(Explanation): use ideal gas law in full to solve for volume in liters. Plug in what we know (pressure, number of moles, and gas constant r which is always 0.0821, temperature in kelvin!!) to get ... Now divide both sides by 2.0999 to get V=95.14882035. Round to 5 sig figs to get 95.149
Description : At 0°C, a gas occupies 22.4 liters. How nuch hot must be the gas in celsius and in kelvin to reach volume of 25.0 literes?
Last Answer : At 0°C, a gas occupies 22.4 liters. How nuch hot must be the gas in celsius and in kelvin to reach volume of 25.0 literes?
Description : What is the volume in liters of 0.75 mol of methane gas (CH4)?
Last Answer : The volume is 17 L.
Description : How many moles of an ideal gas will occupy a volume of 20 liters at 3.5 ATM and 280K?
Last Answer : The number of moles is 3,046.
Description : What is the final volume, in liters, of the gas when measured at 24 ∘C and 635 mmHg, when n is constant?
Last Answer : I don’t understand the question
Description : An adult human lung has a volume of 2.9 liters. If its volume decreases to 1.2 liters and it contains 0.049 mole of air after it exhales, how many moles of air does it contain when full A. 0.025 mol B. 0.041 mol C. 0.083 mol D. 0.12 mol E. 0.14 mol?
Last Answer : An adult human lung has a volume of 2.9 liters. If its volume decreases to 1.2 liters and it contains 0.049 mole of air after it exhales, how many moles of air does it contain when full? A. 0.025 mol B. 0.041 mol C. 0.083 mol D. 0.12 mol E. 0.14 mol
Description : Total volume of blood in a normal adult human being is A. 5-6 liters (Answer) B. 3-4 liters C. 8-10 liters D. 10-12 liters
Last Answer : A. 5-6 liters (Answer)
Description : Would you measure the volume of bottle water in liters or Kilos?
Last Answer : LITRES
Description : Total volume of blood in a normal adult human being is A.5-6 liters B.3-4 liters C.8-10 liters D.10-12 liters
Last Answer : A.5-6 liters
Description : What will be the pressure of a sample of 48.0 grams of oxygen gas in a glass container of volume 5.2 L at 25 and degC?
Description : What will be the pressure of a sample of 48.0 grams of oxygen gas in a glass container of volume 5.2 L at 25 degrees Celsius?
Last Answer : PV = nRTP = pressure = ?V = volume = 5.2 Ln = moles of gas = 48 g x 1 mole/32 g = 1.5 moles O2 gasR = gas constant = 0.0821 L-atm/K-moleT = temperature in K = 25 + 273 = 298 KSolving for P = nRT/V = (1.5)(0.0821)(298)/5.2P = 7.0 atm (to 2 significant figures)
Description : Twenty grams of oxygen gas are compressed at a constant temperature of 30 ˚C to 5%of their original volume. What work is done on the system. A.824 cal B.924 cal C.944 cal D.1124 cal Formula: W = -mRTln (V2/V1) Where R = (1.98 cal/gmole·K) (32 g/gmole)
Last Answer : 1124 cal
Description : If you started with 100 grams of each of the materials below and they all vaporized inside of an inflatable balloon, which of them would produce the largest volume balloon, assuming they were all at the same temperature? w) water x) gasoline y) ethanol z) butane
Last Answer : ANSWER: W -- WATER
Description : If air is at pressure, p, of 3200 lbf/ft2 , and at a temperature, T, of 800 ˚R, what is the specific volume, v? (R=5303 ft-lbf/lbm-˚R, and air can be modeled as an ideal gas.) A.9.8 ft^3/lbm B.11.2 ft^3/lbm C.13.33 ft^3/lbm D.14.2 ft^3/lbm Formula: pv = RT v = RT / p
Last Answer : 13.33 ft^3/lbm
Description : The specific volume of air is expressed as the volume of: a. 1 kg of air at 101.325 kPa in cm3 b. 0.833 kg of air at standard pressure and temperature in m3 c. 1 kg of air at 101.325 ... d. 1 g of air occupied at any temperature and pressure e. 1 kg of air, regardless of temperature and pressure
Last Answer : Answer: C
Description : Standard air is the: a. Mass of 1 cubic meter of dry air at 20°C and atmospheric pressure b. Mass of a cubic meter of air at atmospheric conditions c. Volume of air at ambient temperature and atmospheric pressure ... pressure at sea level or 101.325 kPa e. Volume of 1 kg of air at 15°C and 100 kPa
Last Answer : Answer: D
Description : The weight per unit volume of a liquid at a standard temperature and pressure is called (A) Specific weight (B) Mass density (C) Specific gravity (D) None of these
Last Answer : Answer: Option A
Description : The mass per unit volume of a liquid at a standard temperature and pressure is called (A) Specific weight (B) Mass density (C) Specific gravity (D) None of these
Last Answer : Answer: Option B
Description : The volume of a gas under standard atmospheric pressure & 76 cmHg is 200m³. What is the volume when pressure is 80 cmHg if the temperature is unchanged? a) 180 in³ b) 170 in³ c) 160 in³ d) 190 in³ Formula: P2V2 = P1V1
Last Answer : 190 in³
Description : Calculate the volume occupied by 10 mole of CO2 at STP.
Last Answer : Ans. 1 mol of CO2 at STP = 22.7 L 10 mole of CO2 at STP = 22.7 x 10 =227 L
Description : Which of the following statements about septic shock are true? A. A circulating myocardial depressant factor may account for the cardiac dysfunction sometimes seen with shock due to sepsis or ... animal studies that demonstrate a significant improvement in survival with the use of such agents.
Last Answer : Answer: AB DISCUSSION: Shock due to sepsis or SIRS frequently manifests as a hyperdynamic cardiovascular response, consisting of an elevated CI and a decreased SVR or SVRI. Occasionally, ... been encouraging thus far in human clinical trials, despite the promising results from many animal studies
Description : How many grams are in 1.11 moles of magnanese sulfate?
Last Answer : 1,11 moles of anhydrous manganese sulfate contain 167,61 g.
Description : How much is 11.2 ounces in grams?
Last Answer : 11.2 x 28.3 = 316.96
Description : Assume postal rates for 'light letters' are: $0.25 up to 10 grams; $0.35 up to 50 grams; $0.45 up to 75 grams; $0.55 up to 100 grams. Which test inputs (in grams) would be selected using boundary value analysis? A. 0, 9,19, ... C. 0, 1,10,11, 50, 51, 75, 76,100,101 D. 25, 26, 35, 36, 45, 46, 55, 56
Last Answer : C. 0, 1,10,11, 50, 51, 75, 76,100,101
Description : 2.5 liters of a sodium chloride (NaCl) solution contain 5 moles of the solute. What is the molarity? w) 5 molar x) 2 molar y) 2.5 molar z) 12.5 molar
Last Answer : ANSWER: X -- 2 MOLAR
Description : How many calories are required to raise the temperature of 20 grams of water from 40 degrees to 60 degrees? w) 40 cal x) 400 cal y) 20 cal z) 200 cal
Last Answer : ANSWER: X -- 400 cal
Description : PROBLEM FA sample of soft saturated clay weighs 350 grams and has a volume of 205cc. After oven drying, the soil weighs 225 grams. Calculate the values of saturated unit weight, void ratio, porosity and specific gravity?
Last Answer : {
Description : A block has a mass of 24 grams is 3 cm high, 4 cm long and 7 cm wide. What is the volume of this block?
Last Answer : Volume is calculated by LWH = 84. If you want Density, it is calculated by mass/volume => 24/84 =0.285 g/cm^3
Description : The mass of a liquid (in grams ) varies directly with its volume (in `cm^(3)`). A liquid would have a mass of 20 grams if its volume is 10 `cm^(3)`).
Last Answer : The mass of a liquid (in grams ) varies directly with its volume (in `cm^(3)`). A liquid would have a ... in grams, if its volume is 8 ` cm^(3)`).
Description : The mass of one mole of a substance in grams is known as ______. A. Molar weight B. Molar mass C. Molar volume D. Molar constant
Last Answer : Molar mass
Description : Refrigeration in aeroplanes usually employs the following refrigerant (a) Co2 (b) Freon-11 (c) Freon-22 (d) Air
Last Answer : Ans: d
Description : Dry air requirement for burning 1 Nm3 of CO to CO2 may be around __________ Nm3 . (A) 2.4 (B) 1.75 (C) 0.87 (D) 11.4
Last Answer : (A) 2.4