Determine the percentage by mass of each element in the following compounds. place.) (a) ammonia, NH, N. H. (b) washing soda, Na,co, Na %

Q: Determine the number of molecules present in 0.510 g of CO2

A: No. of molecules = No. of moles x Avogadro's number No. of moles = mass of substance/molar mass of a…

Q: Classify each of the following materials as an element, compound, heterogeneous mixture, or…

A: A mixture which has uniform composition is a homogeneous mixture, while which has non uniform…

Q: How many magnesium atoms are on each side of this equation: 3Mg + N2 Mg3N2 O One O Two O Three O…

A: The balanced equation of the reaction is given as

Q: Calculate (to the nearest 0.1 u) the formula mass of these compounds. a. Magnesium Fluoride MgF2 b.…

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Q: Do covalent compounds conduct electricity when they are mixed with water?  Explain.

A: The covalent bond is the type of the bond formed by the sharing pair of electrons between toe or…

Q: Determine the mass in units of grams [g] of 0.5 moles (molof a new fictitious compound you have…

A: One mole of any elementary particle/molecules/atoms/electrons consists of 6.02×1023 particle of the…

Q: 2. Draw lewis dot symbol of the following compounds. a. N2 b. SÓ, c. NH4

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Q: Which clue can be used to identify a chemical reaction as a combustion reaction? O Oxygen is a…

A: combustion reaction is a reaction in which a substance/hydrocarbon reacts with oxygen gas,…

Q: How many of cach etom are in the reactants? · How many of cach atom are in the products? A auminum &…

A: Required : Number of Aluminum and Bromine in the given reaction.

Q: Group 17 (7A), the halogens, includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and…

A: Periodic table is divided into five major segments: Metals Non-Metals Metalloids Transition metal…

Q: Categorize each of the following as a physical or chemical change. Explain your reasoning: a)…

A: The problem is based on physical and chemical change. Phycisal changes are that changes where the…

Q: Which of the following is NOT true of a compound? O It is made of elements that keep their…

A: Compound:  It is a material that form by chemical bonding between two or more than two chemical…

Q: Which substance is used to remove rust from metal? O lye (NaOH) O hydrochloric acid (HCI) O ammonia…

A: Answer: The correct option is option B) Hydrochloric Acid (HCl) The rusting of iron is a slow…

Q: how do you tell the difference between polar and non polar molecules. There is no chemistry option

A: A polar molecule is that molecule which consists of two parts with opposite charges on them. In…

Q: Determine the mass in grams of 1.1 moles of NaCl

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Q: 2. Substances have a definite and unchanging chemical composition. Examples of substances are salt,…

A: Option C is correct  Their composition is balance wherever you find them

Q: The table lists the properties of four different samples. Sample Properties 1 always boils at 100° C…

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Q: Classify each of the following materials as an element, compound, heterogeneous mixture, or…

A: Zinc is an element Zinc Sulfide is a compound (inorganic)

Q: What is the formula for the common household compound known as washing so

A: Washing soda

Q: Why do solutions containing acids conduct an electric current

A: Aqueous solutions of acids dissociate H+ ions in the solution which helps conduct electricity…

Q: Which of the following substances is NOT homogeneous? O 1. iron O 2. water 3. sand O 4. sugar

A: Homogeneous mixture is uniform composition

Q: Determine the percentage by mass of each element in the following compounds. (Round your answers to…

A: Na2CO3 atomic mass of Na=23 gm atomic mass of carbon C=12 gm  atomic mass of Oxygen O=16 gm total…

Q: What would be the molarity of a solution in which 0.340 mole of NaCl is dissolved in enough water to…

A: The number of moles of the solution is 0.340 mole. The volume of the solution is 2.40 L.

Q: Write name of any four chemical which are used in domestic purpose

A: 1. Sulfuric acid- H2SO4- it is used in lead storage batteries. 2. Vinegar- CH3COOH- Acetic Acid- It…

Q: Reactants Products Reaction Progress How would the addition of a catalyst affect this reaction? OThe…

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Q: In a solution there are 11 kg/L (kilograms of solute that are dissolved in 1liter solvent). A drug…

A: Given data The quantity of solute is Qs = 11 kg/L   The unit of solute is converted in terms of g/oz…

Q: Equations The following equation is not balanced. Which element causes the equation to be…

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Q: WHaT Is the total atoms in CH3(CH2)8COOH

A: The total numbers of atoms in the given compound can be calculated as,

Q: Transferring or sharing electrons between atoms forms: solutions mixtures O compounds O alloys

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Q: 5. Calculate (to the nearest 0.1 u) the formula mass of these compounds (if your answer is 47 then…

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Q: What is the chemical formula for sulfur dibromide? O SB 3 O SBr SBR2 O S2B13

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Q: For the redox reaction given below complete the following: KMNO4 + Na2SO3 + H2O → MnO2 + NazSO4 +…

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Q: The equations below describe the conversions between the three scales: K= C + 273 15 F = 95 C + 32…

A: Given: Boiling point of Octane TbO=126 oC Boiling point of ethanol TbE=173 oF

Q: nocolate bar 6.0g/ lozenge om Oil 2.0g/ lozenge emental Calcium 333.Omg/lozenge the formulation…

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Q: Explain why ionic compounds will conduct electricity when they dissolve in water.

A: SOlution: to explain why ionic compounds conduct electricity when dissolved into water

Q: All of the following are bases except A. NaOH B. Al(OH)3 C. HBr D. Ca(OH)2

A: Given : Four options and to identify the acid from the list.

Q: The conversion of oxygen gas to ozone can be catalyzed by the pollutant, nitrogen monoxide gas in…

A: Ozone is produced in the atmosphere, by the reaction of gaseous oxygen with pollutants like nitrogen…

Q: 1. an element. Sugar dissolved in water is O 2. a compound. O 3. a heterogeneous mixture. O 4. a…

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Q: 1. Calculate the formula weights of the following substances: (a) BaCl, (b) KHC,0, 2. Calculate the…

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Q: 200.0 mL of a 0.690 M solution of KCl is diluted to 600.0 mL. What is the new concentration of the…

A: Volume of KCl solution VKCl=200 mL=200×10-3 L The concentration of KCl solution cKCl=0.690 M If n is…

Q: Isra is analyzing the properties of several samples of elements to find out which sample is a…

A: