Description : What is the chemical formula for oxygen?
Last Answer : Answer: O2
Description : What is the chemical formula for the compound formed between stronium and oxygen?
Last Answer : Strontium oxide is SrO.
Description : Which chemical formula shows 2 atoms of iron and 3 atoms of oxygen?
Last Answer : FE03
Description : What is the chemical formula for one carbon atom for every two oxygen atoms?
Last Answer : This molecule is carbon dioxide - CO2.
Description : What is the correct chemical formula for sodium and oxygen?
Last Answer : SO2
Description : A metal X' acquires a green colour coating on its surface on exposure to air. (i) Identify the metal X' and name the process responsible for this change. (ii)Name and write chemical ... the green coating formed on the metal. (iii) List two important methods to prevent the process. -Chemistry
Last Answer : (i) Metal is copper. The process is corrosion. (ii)Basic copper carbonate [CuCO3.Cu(0H)2]. (iii) • It should be coated with tin • It should be mixed with other metals to form alloys.
Description : What is the chemical formula for antimony (III) phosphate?
Last Answer : Need answer
Description : Write balanced chemical equations for the following word equations: (a) Iron + Chlorine → Iron (III) chloride (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water (c) Magnesium + oxygen → ... oxide (d) Calcium oxide + water → Calcium hydroxide (e) Sodium + chlorine → Sodium chloride
Last Answer : (a) Iron + Chlorine → Iron (III) chloride 4Fe + 3Cl2 → 2F2Cl3 (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water 2Mg + 2H2SO4 → 2MgSO4 + 2H2 (c) Magnesium + oxygen → Magnesium oxide 2Mg ... hydroxide CaO + H2O → Ca(OH)2 (e) Sodium + chlorine → Sodium chloride 2Na + Cl2 → 2NaCl
Description : How many atoms does one formula unit of gold sulfide have altogether?
Last Answer : The chemical formula of gold sulfide is Au2S; three atoms are here.
Description : The formula for calculating the depth of concrete pavements suggested by Gold beck, is (A) d = 3W/ max (B) d W/ max) (C) d W/ max) (D) d W/ max)
Last Answer : Answer: Option B
Description : The elements present in the largest amounts in rocks and minerals are: 1. Silicon 2. Oxygen 3. Hydrogen 4. Gold The correct statements are: (a) 1 and 2 (b) 2 and 4 (c) 3 and 4 (d) 1 and 4
Last Answer : Ans:(a)
Description : Carbohydrates are composed of ____ and ____. a. carbon, water c. zinc, aluminum b. hydrogen, oxygen d. gold, calcium
Last Answer : a. carbon, water
Description : The dispersed phase in colloidal iron (III) hydroxide and collodial gold is positively and negtively charged respectively with of the following statem
Last Answer : The dispersed phase in colloidal iron (III) hydroxide and collodial gold is positively and negtively ... readily than the iron (III) hydroxide sol.
Description : Which of the following Gold casting alloys are available: A. Medium alloy “Type II” B. ard alloy “Type III” C. Extra ard alloy “Type IV” D. All of the above
Last Answer : D. All of the above
Description : On analysis, a certain compound was found to contain 254 g of iodine (at. Mass 127) and 80 g oxygen (at. Mass 16). What is the formula of the compound
Last Answer : On analysis, a certain compound was found to contain 254 g of iodine (at. Mass 127) and 80 g oxygen (at. Mass 16). ... C. `I_(5)O_(3)` D. `I_(2)O_(5)`
Description : What is the formula when calcium carbonate breaks down into carbon dioxide oxygen and calcium?
Description : What formula would 2 nitrogen atoms 1 oxygen atom and amp 2 carbon atoms make up?
Last Answer : The formula would thus be C2N2O.
Description : The pressure gauge on a 2000 m³ tank of oxygen gas reads 600 kPa. How much volumes will the oxygen occupied at pressure of the outside air 100 kPa? a) 14026.5 m³ b) 15026.5 m³ c) 13026.5 m³ d) 16026.5 m³ Formula: P1V1/T1 =P2V2/T2
Last Answer : 14026.5 m³
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 : Find the change in internal energy of 5 lb. of oxygen gas when the temperature changes from 100 ˚F to 120 ˚F. CV = 0.157 BTU/lbm-˚R A.14.7 BTU B.15.7 BTU C. 16.8 BTU D. 15.9 BTU Formula: U= mcv T
Last Answer : 15.7 BTU
Description : What is the formula of the compound formed between magnesium and oxygen? A MgO B Mg2O2 C Mg2O3 D MgO2 E Mg2O
Last Answer : A MgO
Description : How many oxygen atoms are there in one formula unit of magnetite?
Last Answer : ANSWER: FOUR
Description : (i) Write down the IUPAC name of the following complex : [Cr(NH3)2CI3(en)]Cl (en = ethylenediamine) (ii) Write the formula for the following complex : Pentaamminenitrito-o-Cobalt (III) -Chemistry
Last Answer : (I) [Cr(NH3)2Cl3(en)]Cl IUPAC name : Diammine dichlorido ethylenediamine chromium (III) chloride. (ii) [Co(NH3)5(ONO)]2+
Description : Write down the formula of : Tetraamineaquachloridocobalt(III) chloride. -Chemistry
Last Answer : [Co(NH3)4(H2O)Cl]Cl2
Description : The correct formula for hexaaminecobalt(III) nitrate is
Last Answer : The correct formula for hexaaminecobalt(III) nitrate is A. `[Co_(3)(NH_(3))](NO_(3))_(3)` B. `[Co_(3)(NH_(3))_ ... ` D. `[Co(NH_(3))_(6)](NO_(3))_(3)`
Description : The formula of tetraammineaquachlorocobalt(III) chloride is :
Last Answer : The formula of tetraammineaquachlorocobalt(III) chloride is : A. `[Co(NH_(2))_(4)(H_(2)O)Cl]Cl_(2)` B. `[Co( ... ` D. `[Co(NH_(3))_(4)(OH)Cl_(2)]Cl`
Description : How many total sodium ions are present in one formula uint of sodium ethane-1,2-diaminetetraacetatochromate (II) and sodium hexanitrito cobaltate (III
Last Answer : How many total sodium ions are present in one formula uint of sodium ethane-1,2- ... II) and sodium hexanitrito cobaltate (III) ?
Description : The formula of complex tris ( ethylenediamine ) cobalt (III) sulphate is
Last Answer : The formula of complex tris ( ethylenediamine ) cobalt (III) sulphate is A. `[Co(en)_(2)SO_(4)]` B. `[Co(en)_(3) ... D. `[Co(en)_(3)]_(2)(SO_(4))_(3)`
Description : What is the formula to iron (III) sulfate?
Last Answer : What is the answer ?
Description : What is the formula for cobalt (iii) chromate?
Last Answer : The formula for cobalt(III) chromate is Co2(CrO4)3.
Description : Consider the following four statements (i), (ii), (iii) and (iv) and select the right option for two correct statements. Statements : (i) In vexillary aestivation, the large posterior petal is called-standard, two lateral ones are ... iii) (b) (i) and (ii) (c) (ii) and (iii) (d) (iii) and (iv).
Last Answer : (b) (i) and (ii)