Description : What Elements in order of increasing size sulfur silicon oxygen aluminum and neon?
Last Answer : Elements in order of increasing size of the covalent atomicradius: neon, oxygen, sulfur, silicon, aluminum.
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 : In one molecule of sodium sulfate how many percent of it is sulfur?
Last Answer : We refer to "molecules" of sodium sulfate as formula units. Theformula is Na2SO4. The molar mass is 142 g/mole. And sulfur (S) is32 out of the entire 142 g. So, percent sulfur is 32/142 (x100%) =22.5%
Description : The photosynthetic pigments used by the green sulfur bacteria and some archaeal species are a. Chlorophyll b. Bacteriochlorophyll c. Cytochrome d. Sulfate
Last Answer : b. Bacteriochlorophyll
Description : Nitrogen oxidation (nitrification)refers to the A- conversion of ammonium ions into nitrates through the activities of certain bacteria B- changing of atmospheric nitrogen (N2) to nitrogen compounds C- sulfur is oxidized to the sulfate form through Thiobacillusbacteria D- none of the above
Last Answer : conversion of ammonium ions into nitrates through the activities of certain bacteria
Description : Which one of the following atoms has two unpaired electrons in its ground state: w) Sodium x) Calcium y) Oxygen z) Aluminum
Last Answer : ANSWER: Y -- OXYGEN
Description : What is the common name for Potassium Aluminum Sulfate dodecahydrate?
Last Answer : ANSWER: ALUM
Description : What is the formula of the ionic compound expected to form between the elements sulfur and aluminum?
Last Answer : The aluminum ion is Al3+ and the sulfide ion is S2-. The formula for aluminum sulfide is Al2S3. In an ionic compound, the size of the charge of each ion becomes the subscript on the opposite ion. This is called the crisscross rule. https://www.YouTube.com/watch?v=99NVKAss5LE&t=240s
Description : What is a mixture of potassium nitrate powdered charcoal and sulfur called? (1) paint (2) aluminum (3) brass (4) gun powder
Last Answer : (4) gun powder Explanation: Gun powder is the mixture of potassium nitrate powdered charcoal and sulfur.
Description : Which of the following is the element which makes up about 8 percent of the earth's crust and occurs in all rocks except limestone and sandstone? w) sulfur x) aluminum y) sodium z) magnesium
Last Answer : ANSWER: X -- ALUMINUM
Description : Which of the following elements would form an acid oxide with the formula XO2 and an acidic compound with hydrogen with the formula XH2? w) Sodium x) Magnesium y) Aluminum z) Sulfur
Last Answer : ANSWER: Z -- SULFUR
Description : Which of the following elements was unknown to ancient civilizations? w) tin x) aluminum y) mercury z) sulfur
Description : In which of the following conversions all the three oxygen atoms of `O_(3)` molecules are utilised for oxidation: I. Ferrous oxide to ferric oxide II.
Last Answer : In which of the following conversions all the three oxygen atoms of `O_(3)` molecules are utilised for ... and IV only D. II, III and IV only
Description : Molecular oxygen is said to be paramagnetic. This indicates that molecular oxygen: w) is a gas at room temperature x) forms molecules containing two oxygen atoms y) has an approximate molecular weight of 32 z) has unpaired electrons
Last Answer : ANSWER: Z -- HAS UNPAIRED ELECTRONS
Description : Schwann's cell theory basically states that: a) cells are the building blocks of living things. b) cells require oxygen. c) cells are made of atoms and molecules. d) cells require nutrients.
Last Answer : ANSWER: A -- CELLS ARE THE BUILDING BLOCKS OF LIVING THINGS.
Description : How many molecules of water are produced if 2.0g of sodium sulfate are produced in the above reactionH2SO4+2NaOH=H2O+Na2SO4?
Last Answer : The reaction requires 2 moles of hydrogen gas and 1 mole of oxygen gas to produce 2 moles of water.
Description : How many water molecules are contained in Cobalt (II) sulfate heptahydrate? w) 3 x) 6 y) 8 z) 7
Last Answer : ANSWER: D -- 7
Description : (3) Oxides of nitrogen and sulphur Explanation: Acid rain is caused by emissions of oxides of Sulfur and Nitrogen (Sulfur Dioxide and Nitrogen Oxide), which react with the water molecules in the ... The emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) result from fossil fuel combustion.
Last Answer : (3) live wire and the neutral wire Explanation: Three wires enter most homes from the power pole-two "hot" wires and a third "neutral" wire. Each hot wire provides 120- volt current for ... the main switch is put off because the electric circuit (the path where the electricity travels) gets opened.
Description : (2) oxides of nitrogen and sulphur Explanation: Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides, which react with the water molecules in the atmosphere to produce acids.
Last Answer : Neuron is - (1) Fundamental unit of energy (2) Particle released in radioactive emission (3) Antiparbcle of neutron (4) Fundamental unit of nervous system
Description : Which one of the following molecules exhibits resonance? w) Carbon Tetrachloride x) Carbonate ion y) Sulfur Dichloride z) Phosphorus Tribromide
Last Answer : ANSWER: X -- CARBONATE ION
Description : how many atoms does sulfur have in ZnSO4?
Last Answer : There is only one sulfur atom. The S is sulfur, and there is no number next to it.
Description : How many atoms in sulfur hexafluorine?
Last Answer : Need answer
Description : How many sulfur atoms are present in 25.6 g of Al2(S2O3)3?
Last Answer : First of all, your formula cannot be right. There is no way the formula is Al2S2O33. Sorry, not happening. Maybe it is supposed to be Al2S2O3? But you need to know the actual formula to answer this ... . To do that multiply by Avogadro's number and see the Related Questions links for how to do that!
Description : How many atoms are in 64 g sulfur (S) ?
Last Answer : 2(6.02 x 10 23) atom
Description : What is the mass of 6.02 x 10 ^23 atoms of sulfur?
Last Answer : 32g
Description : All of the following are electron acceptors for anaerobic respiration except: a. Carbonate. b. Oxygen gas. c. Nitrate. d. Sulfate.
Last Answer : b. Oxygen gas.
Last Answer : : Sulfur reacts with oxygen to produce so3 gas
Description : a. Which atom should have smaller ionization enthalpy, oxygen or sulfur? b. The lithium forms +1 ions while berylium forms +2 ions ?
Last Answer : With the help of diagram answer the questions given below : a. Which atom should have smaller ... forms +1 ions while berylium forms +2 ions ?
Description : Who of these has the smallest radius Lithium Oxygen Potassium or Sulfur?
Description : The sun is made up of 99.9% of -------- and -------? A. Oxygen and Hydrogen B. Hydrogen and Sulfur C. Carbon and Silicon D. Hydrogen and Helium (Answer)
Last Answer : D. Hydrogen and Helium (Answer)
Description : Thiols are alcohol analogs in which the oxygen has been replaced by sulfur (e.g., CH3SH). Given the fact that the S-H bond is less polar than the O-H bond, which of the following ... (c) Hydrogen bonding forces would be the same. (d) No comparison can be made without additional information
Last Answer : Hydrogen bonding forces are weaker in thiols.
Description : The element least likely to be found in an organic compound is (a) oxygen (b) sulfur (c) nitrogen (d) silicon
Last Answer : silicon
Description : Which of the following does not produce oxygen as a product of photosynthesis? A.Oak trees B.Purple sulfur bacteria C.Cyanobacteria D.Phytoplankton
Last Answer : B.Purple sulfur bacteria
Description : Which of the following does not produce oxygen as a product of photosynthesis? A- A.Oak trees B.Purple sulfur bacteria C.Cyanobacteria D.Phytoplankton
Last Answer : Purple sulfur bacteria
Description : Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities? w) oxygen and hydrogen x) ozone and methane y) nitrous oxide and sulfur dioxide z) methane and carbon dioxide e) ozone and carbon monoxide
Last Answer : ANSWER: Z -- METHANE AND CARBON DIOXIDE
Description : The hydrocarbon end of a detergent molecule is: w) hydrophilic x) hydrophobic y) possible ionic z) contains oxygen or sulfur
Last Answer : ANSWER: HYDROPHOBIC
Description : Which of the following materials are used in the manufacture of pig iron from iron ore? w) Limestone and carbon x) Calcium oxide and oxygen y) Chromium and nickel z) Oxygen and sulfur dioxide
Last Answer : ANSWER: W -- LIMESTONE AND CARBON
Description : Which of the following are alloying materials used the manufacture of stainless steel? w) Limestone and carbon x) Calcium oxide and oxygen y) Oxygen and sulfur dioxide z) Chromium and nickel
Last Answer : ANSWER: Z -- CHROMIUM AND NICKEL
Description : Which of the following elements can form the great number of covalent bonds? w) carbon x) nitrogen y) oxygen z) sulfur
Description : What is aluminum plus oxygen gas form aluminum?
Last Answer : The chemical reaction (without importance in industry) is:4 Al +3 O2 = 2 Al2O3
Description : If 5.433 g of aluminum is burned with 8.834 g of oxygen gas what is the limiting reactant?
Last Answer : Aluminium (Al) + Oxygen (O) = Aluminium Oxide (Al2O3)Aluminium Atomic weight = about 27Oxygen Atomic weight = about) 16Proportion in Al203 = Aluminium 54, Oxygen 48Thus the ratio of weight ... will run out before the Oxygen as the reaction proceeds, making the Aluminium the limiting reactant.
Description : How Aluminum iron copper and oxygen are all examples of what compounds mixtures elements gases?
Description : The most abundant element in Earth’s crust is _____? A. Silicon B. Iron C. Aluminum D. Oxygen
Last Answer : ANSWER: D
Description : Carbohydrates are composed of ____ and ____. a. carbon, water c. zinc, aluminum b. hydrogen, oxygen d. gold, calcium
Last Answer : a. carbon, water
Description : Which of the following elements would form a covalent bond with Bromine? w) Calcium x) Aluminum y) Oxygen z) Tin
Description : Which of the following metals is LEAST reactive toward atmospheric oxygen? w) Lead x) Copper y) Iron z) Aluminum
Last Answer : ANSWER: X -- COPPER
Description : Class 9th CBSE Chemistry CBQ'S (Case Base Study) Atoms and Molecules -Science
Last Answer : 1. A liquid compound X of molecular mass 18 u can be obtained from a number of natural sources. All the animals and plants need liquid X for their survival. When an electric current is passed through 200 grams of pure liquid X ... ------------------------------ More questions to be added shortly...
Description : The energy associated with the random motion of molecules or atoms within a substance is?
Last Answer : Thermal energy
Description : after atoms and molecules of gases and liquids are heated they move away from the heat . what takes their place?
Last Answer : ions