Description : What is the total number of nitrogen atoms in 0.25 mole of NO2 gas?
Last Answer : 0,25 mole of NO2 gas contain 1,505 535 214 25.10e23 nitrogen atoms.
Description : What is the total number of atoms contained in a 1.00 mole sample of helium?
Last Answer : The total number of atoms contained in a 1,00 mole sample ofhelium is 6,022 140 857.10e23.
Description : The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect A. Nitrogen Dioxide (NO2) B. Chlorofluorocarbons (CFCs) C. Methane (CH4) (Answer) D. High-fructose corn syrup (HFCs)
Last Answer : C. Methane (CH4) (Answer)
Description : An important water contaminant is: (a) Heavy metals (b) Nitrogen oxides (c) Carbon monoxide (d) NO2 and SO2
Last Answer : (b) Nitrogen oxides
Description : The first stable product of fixation of atmospheric nitrogen in leguminous plants is (a) NO3 − (b) glutamate (c) NO2 − (d) ammonia
Last Answer : (c) NO2
Description : Pick out the wrong statement pertaining to nitric acid. (A) About 90% of nitric acid is manufactured by Ostwald's process (B) It is a strong mono basic acid which reacts with almost all the ... (mainly NO2 ) (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process
Last Answer : (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process
Description : Find the number of atoms in 0.5 mole of C atom. -Chemistry 9th
Last Answer : 0.5 mole of C=6.022×10*23 no. of atoms = 6.022×10*23/2 =3.011×10*23 hope this helps u
Description : What is the number of hydrogen atoms present in 0.791 mole of ammonia?
Last Answer : The number of hydrogen atoms is 14,290540253661.10e23.
Description : One mole of nitrogen at 8 bar and 600 K is contained in a piston cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is (A) 30554 (B) 10373 (C) 4988.4 (D) 4364.9
Last Answer : (B) 10373
Description : TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes (A) Skin disorder (B) Bronchitis (C) Bone disease (D) Cancer
Last Answer : (B) Bronchitis
Description : Calculate the number of oxygen atoms in 1 mole of O2. -Chemistry 9th
Last Answer : 1 molecule of O2 = 2 oxygen atoms So, 1 mole of O2 = 2 mole oxygen atoms = 2 × 6.022 × 1023 = 12.044 ×1023 oxygen atoms.
Description : Heavy water is so called because it contains - (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms
Last Answer : (1) Heavy isotope of hydrogen Explanation: Heavy water, formally called deuterium oxide, is a form of "water that contains a larger than normal amount of the hydrogen isotope deuterium, (also known as ... ) rather than the common hydrogen-1 isotope that makes up most of the hydrogen in normal water.
Description : Is the amount of a substance that contains Avogadro’s number of atoms/molecules. a. mass b. matter c. gram-mole d. volume
Last Answer : gram-mole
Description : Heavy water is so called because it contains (1) Heavy isotope of hydrogen (2) Heavy isotope of oxygen (3) Mole number of hydrogen atoms (4) Mole number of oxygen atoms
Last Answer : Heavy isotope of hydrogen
Description : In nylon-6, the number 6 represents the total number of (A) Carbon atoms in the ring (B) Carbon atoms in the linear polymer chain (C) Nitrogen atoms in the ring (D) Hydrogen atoms in the ring
Last Answer : (B) Carbon atoms in the linear polymer chain
Description : The workdone in ergs for the reversible expansion of one mole of an ideal gas from a volume of 10 litres to 20 litres at `25^(@)C` is
Last Answer : The workdone in ergs for the reversible expansion of one mole of an ideal gas from a volume of 10 ... 0821xx298xx` log 0.5 D. `-2.303xx2xx298` log2
Description : What is the mass in grams of one mole of helium atoms?
Last Answer : 6
Description : What is the mass in grams of one-mole of potassium atoms?
Description : 10 mole of carbon contains A. 6.02 × 1024 atoms B. 6.03 × 1023 atoms C. 6.02 × 1023 atoms D. 6.04 × 1024 atoms
Last Answer : 6.02 × 1024 atoms
Description : Atomic mass of Sulphur is 32u. The number of moles in 16 games of Sulphur is: (1) 1 mole of Sulphur (2) 0.5 moles of Sulphur (3) 0.75 moles of Sulphur (4) 0.25 moles of Sulphur
Last Answer : (2) 0.5 moles of Sulphur Explanation: The molar mass of a com pound is equal to the sum of the atomic masses of its con stituent atoms in g/mol.
Description : The chemical formula of the laughing gas is – (1) NO (2) N2O (3) NO2 (4) N2O3
Last Answer : (2) N2O Explanation: Nitrous oxide, commonly known as laughing gas, is a chemical compound with the formula N2O. It is an oxide of nitrogen.
Description : Acid rains are produced by (a) excess NO2 and SO2 from burning fossil fuels (b) excess production of NH3 by industry and coal gas (c) excess release of carbon monoxide by incomplete combustion (d) excess formation of CO2 by combustion and animal respiration.
Last Answer : (a) excess NO2 and SO2 from burning fossil fuels
Description : Automobile exhaust gas that causes major respiratory problem is a) CO b) CH4 C) NO2 d) Chlorine.
Last Answer : a) CO
Description : The chemical formula of the laughing gas is (1) NO (2) N2O (3) NO2 (4) N2O3
Last Answer : N2O
Description : “The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture". This is (A) The statement as per Gibbs-Helmholtz (B) Called Lewis-Randall rule (C) Henry's law (D) None of these
Last Answer : (B) Called Lewis-Randall rule
Description : For the gaseous reaction 2A → B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is (A) 1 (B) -0.5 (C) -0.25 (D) 0
Last Answer : (C) -0.25
Description : Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole. (A) 0 (B) 273 (C) 25 (D) None of these
Last Answer : (A) 0
Description : FeO (s) + CO (g) = Fe (s) + CO2 (g), k = 0. 435 at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K? (A) 1.0 (B) 1.3 (C) 2.3 (D) 3.3
Last Answer : Option D
Description : If nitrogen which has an electronegativity of 2.0 bonds with hydrogen which has an electronegativity of 2.1 the bond between the two atoms will be classified as?
Last Answer : Feel Free to Answer
Description : For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be (A) 6738.9 (B) 6753.5 (C) 7058.3 (D) 9000
Last Answer : (B) 6753.5
Description : 5 moles of `SO_(2)` and 5 moles of `O_(2)` react in a closed vessel. At equilibrium 60% of the `SO_(2)` is consumed . The total number of gaseous mole
Last Answer : 5 moles of `SO_(2)` and 5 moles of `O_(2)` react in a closed vessel. At equilibrium 60% of the `SO_(2)` is consumed ... - A. 5.1 B. 3.9 C. 10.5 D. 8.5
Description : Complete hydrolysis product of 1 mole each of following will need how many total number of moles of NaOH for complete neutralisation? `SOCl_(2), SO_(2
Last Answer : Complete hydrolysis product of 1 mole each of following will need how many total number of moles of NaOH for ... ), PCl_(3), PCl_(5), NCl_(3)`
Description : Sulphur can form dihalide, tetrahalide and hexahalide with fluorine. One mole of each of these three compounds is mixed with water. The total number o
Last Answer : Sulphur can form dihalide, tetrahalide and hexahalide with fluorine. One mole of each of these three ... is ____. If no reaction occurs, count zero
Description : A piston filled with `0.04` mole of an ideal gas expands reversible from `50.0mL` at a constant temperature of `37.0^(@)C` . As it does so, it absorbs
Last Answer : A piston filled with `0.04` mole of an ideal gas expands reversible from `50.0mL` at a constant temperature of `37. ... J` D. `q= +208 J, w=+208 J`
Description : 0.01 mole of iodoform `(CHI_(3))` reacts with Ag to produce a gas whose volume at NTP is `2CHI_(3)+6Ag to6Agl(s)+C_(2)H_(2)(g)`
Last Answer : 0.01 mole of iodoform `(CHI_(3))` reacts with Ag to produce a gas whose volume at NTP is `2CHI_(3)+6Ag ... mL B. 112 mL C. 336 mL D. None of these
Description : Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer coefficient based on the liquid side for dilute systems for the above was estimated to be 4 ... -4 (C) 5.6 10 -3 (D) 8.5 10 -3
Last Answer : (B) 8.5 × 10 -4
Description : H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S ... by, y = 5x + 0.001 is (A) 2.0 (B) 1.56 (C) 1.0
Last Answer : (A) 2.0
Description : Nylon-66 is so named because the (A) Average degree of polymerisation of the polymer is 1966 (B) Number of carbon atoms between two nitrogen atoms are 6 (C) Number of nitrogen atoms between two carbon atoms are 6 (D) Polymer was first synthesised in 1966
Last Answer : (A) Average degree of polymerisation of the polymer is 1966
Description : How to take no2 and what are the to do's while taking it.
Last Answer : you are harming your metabolisim. The best thing for lean muscle is light weight lifting and sweat with diet and heavy cardio.
Description : Indicate the types of isomerisms exhibited by the complex [Co(NH3)5 (NO2)] (NO3)2. (At. no. Co = 27) -Chemistry
Last Answer : It shows ionisation isomerism and linkage isomerism.
Description : What type of bond is NO2?
Last Answer : This bond is covalent.
Description : How would the equilibrium change if NO2 were added to SO2(g)+NO2(g)=NO(g)+SO3(g)+heat?
Last Answer : The amount of NO and SO3 would increased.
Description : how many moles of NO2 are in 7.4 mol N2O5?
Last Answer : N2O5(g) → 4NO2(g) + O2(g)
Description : Conversion of NH4 to NO2 in soil is brought out by
Last Answer : Ans. Nitrosomonas
Description : Photo chemical smog is a result-ant of the reaction among – (1) High concentration of NO2, O3, and CO in the evening (2) CO, CO2 and NO2 at low temperature (3) CO, O2 and peroxy acetyl nitrate in the presence of Sunlight (4) NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight
Last Answer : (4) NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight Explanation: Photochemical smog is a unique type of air pollution which is caused by reactions between sunlight and pollutants like hydrocarbons and nitrogen dioxide (NO and NO2).