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Fullerenes are solid allotropes of a Fluorine b Phosphorus c Sulphur d Carbon 108 DDT is used as insecticides its molar mass is /mol when DDT was analysed by chemist he found that it contained % carbon How many carbon atoms are there in DDT molecule a 10 b 12 c 14 d 16 120 Chose the word most similar in meaning to
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Calculate the percentage by mass of aluminium present in of the alloy Al = 27 Molar gas volume = 24000cm3 chart shows the extraction of lead from its ore
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Protons are positively charged and have a mass of approximately 1 atomic mass unit amu One amu is equal to × 10−27 kg The number of protons also called the atomic number Z determines the identity of the atom Neutrons are electrically neutral and have a mass of approximately 1 amu Electrons are negatively charged and have a
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sulphate solution The temperature rose form to Calculate the molar enthalpy of displacement of copper I I sulphate solution s pecific heat capacity is 1K 1 Density of the solution is /cm3 3m arks 14 Element A has atomic mass 23 element B atomic mass 7 and also has 12 neutrons and 4 neutrons respectively
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Exercise 2 Density of calcium metal is gram/cm3 In fact real volume occupied by atoms only 74% of crystal the remaining crystals are the empty slots The molar mass of calcium is gram/ the atomic radius of calcium atom Solution We have the fomularDCa= M V= M 1 V1mole of crystal 1 mole of crystalD
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Use this to calculate the molar mass of gold Density of a gas relative to air is Find the mol mass of the gas [Mair = 29g/mol] If all 1 billion 109 people in India were
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A CALCULATOR The school will NOT provide you with a replacement if you forget your calculator Replacement batteries are recommended Any calculator with memory capabilities will be cleared prior to entering the gym and before leaving at the end of the exam A pencil and eraser the exam is machine scored and an HB pencil and eraser are
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A piece of tissue paper was weighed on the balance to determine the mass then 1 gram of potassium iodide was added to tissue paper to determine the weight of both together In a 250 mL beaker the potassium iodide was completely dissolved in the 25 mL of distilled water than added was 20 mL or less of lead II nitrate to the solution which turned the solution from clear to a yellow color
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Question Solubility Product Constant Prelaboratory Assignment Name and Drawer Number 1 Calculate the mass g of potassi nitrate KNO3 that is required to prepare mL of um M KNOy aq 1000 Ib 2 The solubility product constant for Mg oH20s is Homework Answers 63 Views Question Solubility Product Constant Prelaboratory Chemistry Homework Answers View Answer
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how to calculate sand cum kids how is limestone mining how much for a silica sand manege surface how to build drywasher free how hard is the rock talc gold panning video compilations how to pan for gold videos how to calculate molar mass of 1 0m potassium chromate how does a roller mill grind cement ball mill normally how to operate
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Molar absorbtivity of chromate VI and tetrakis η 2 peroxo chromate V Sample absorbance data at 372 and 500 nm for the reaction of chromate in M H2O2 M HO2 and M base
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1 How many milliliters of NaOH are required to react with of 16M HNO3 2 How many milliliters of NaOH are required to react with of Cu 2 to form Cu OH 2 3 Based on your answers question 2 and 3 if a student added 25mL of NaOH in part 2 of the experiment there will be enough NaOH to react with both the HNO3and Cu 2
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Dec 3 2021how to calculate bitumen quantity how crushing lead zinc how to calculate molar mass of 1 0m potassium chromate how the ore crusher works how to calculate srm speed for seam less steel tube how much does crushing machine cost how much is the cost to setup steel mill how to improve efficiency of primary crushers how to make sand on a
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The ideal gas law can be used to find molar mass if the mass of the gas is known or the density of the gas if its molar mass is known 36 Calculate A L flask is filled with propane gas C 3H 8 at a pressure of atm and a temperature of °C What is the mass of the propane in the flask
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A gravity flow auger consists of a rotating slotted tube in a flowing mass The material is carried out of the tube by a worm screw Sampling Metals Metals can be sampled by drilling the piece to be sampled at regular intervals from all sides being certain that each drill hole extends beyond the halfway point Additional samples can be obtained by sawing through the metal and
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1 24 An aqueous solution of antifreeze contains M ethylene glycol HOCH2CH2OH FM and has a density of g/mL a Find the mass of L of this solution and the number of grams of ethylene glycol per liter b Find the molality of ethylene glycol in this solution 1 14 What is the formal concentration expressed as mol/L
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What is the molar solubility of lead II chromate ksp=^ 14 in M potassium chromate chemistry Molarity You have 353 mL of a M potassium Chloride solution but you need to make a M potassium Chloride solution How many milliliters of water must you add to the original M solution to make the M potassium Chloride
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Molar Conversions Name Problem Set 35 Chemistry Cruickshanks 1 Calculate the molar mass of the following A NaCl E SF40 F Barium G TI 1 B NaC2H302 C Fe3 PO4 2 D H Ti CF4 Convert the followi… Write a formula for the compound that forms between sodium and each polyatomic ion i formate ii carbonate iii phosphite iv hydrogen carbonate A i HCOONa ii NazCO3 iii NazPO3 iv
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Potassium Chromate Solution 5% GFS Chemicals K 2 CrO 4 CAS# 7789 00 6 NFPA# 4 0 2 Specific Gravity Indicator for volumetric chloride determination Compare this item BTI Inline Filters Breakthrough Indicators Inline Chemteq Filters Breakthrough Indicators Inline for Acids Ammonia Ammonia Hydrogen Sulfide Basic Vapors Formaldehyde Humidity Hydrazine
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Apr 21 2021Suppose of barium acetate is dissolved in 350 mL of a M aqueous solution of sodium chromate Calculate the final molarity of acetate anion in the solution You can assume the volume of th … read more
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A compound Z has a molar mass of 56g and contains % carbon and % hydrogen by mass C = 12 H = 1 a i Determine the molecular formula of compound Z 2 marks
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The rate of dissolution of the ions from the solid equals the rate of precipitation of the ions from the solution Lead II Chloride is an example of a sparingly soluble salt The equation for the solution reaction of PbCl is PbCl2 → Pb 2 CIQ The solubility product expression for this reaction is Ksp [Pb CM12 This equation means that
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Explain the unit of a mole and calculate molar mass Use significant figures to round calculations By the end of this video you should be able to… Use dimensional analysis to calculate the moles of a substance Use dimensional analysis to find the mass of a substance
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NO3 > NO O2 e 2NO3 > NO2 O2 2e The Na formed at the cathode reacts immediately with the strongly oxidizing nitrate ions giving sodium oxide and nitrogen you may also get some sodium nitrite Keep in mind that nitrate ion is a strong oxidizer and hence any sodium formed will be destroyed immediately
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A concentrated reagent is sold as a solution that is mass % solute If the molar mass of the solute is 120 g/mol and the density of this solution is g/mL what is the molarity of the solution a M b M c M d M e M
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The molar mass of the compound is g/mol How many atoms or molecules are present in mol of Au How am I able to find the answer Question #32d5f Question #70147 Question #e0b23 Question #88b38 Question #5373c Question #641fa How many mols CO in this equation #2CO O 2 > 2CO 2# Question #717bc Question #be392 Question #3da24
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a NaCl b NaOH c MgCl2 d NaCl 0 5 e KBr f NaCl g NaCl h FeCl3 i HCl j NH3 2 Calculate the number of moles and the number of grams of solute in each solution Moles of solute mol Molar Mass of solute g/mol Mass of solute g a liter of 5 M NaCl b
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M= Molar Mass of H2SO4 = 9g/mol C= Concentration of H2SO4 to be prepared Known = V= Volume of H2SO4 to be prepared Known =500ml P= Percentage Purity Usually found on the container s label =% D= Density of H2SO4 Usually found on the container s label = /cm3 V2= 74ml
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