The iodide ion is a dietary mineral essential to good nutrition. In countries where potassium iodide is added to salt, iodine deficiency (or goiter) has been almost completely eliminated. The recommended daily allowance (RDA) for iodine is 150 mg/day. How much potassium iodide (76.45% I) should you consume if you want to meet the RDA?

Q: Normal saline is an isotonic (to humans) solution which is used in medicine for volume…

A: Given: Concentration of NaCl in saline = 0.9 g/dL. And volume of saline solution = 1 L Since 1 L =…

Q: Ariana plans to react a sample of magnesium carbonate (MgCO3) with hydrochloric acid (HCl) to…

A: Ariana plans to react a sample of magnesium carbonate (MgCO3) with hydrochloric acid (HCl) to…

Q: • Two new elements with symbols Z and A combine. Ź forms Z¹+ and A forms A3- and the ions combine to…

A: Chemical formula of an ionic compound can be formed by criss-crossing the valencies of ions.

Q: Treatment of a 150-g sample of impure potassium chloride (KCI) with an excess of silver nitrate…

A: Given, Mass of sample of impure potassium chloride (KCl) = 150 g Silver nitrate (AgNO3) - excess…

Q: Each 100 ml of an antacid contains 3.7 g of aluminum hydroxide (Al (OH) 3), 11.66 g of magnesium…

A: To determine moles of any substance present  we use following formula    moles = massmolar mass

Q: An 8.00 gram sample of the hydrated salt, CoCl2 x XH2O was thermally decomposed into anhydrous…

A: Given: Mass of hydrated salt = 8.00 g. And the mass of anhydrous salt obtained = 4.370 g.

Q: Calculate the molar mass of Iron(III) chloride hexahydrate: FeCl3• 6H20. O 162.29 g/mol O 180.29…

A: Given  Molar mass of EDTA disodium salt dihydrate = 372.24 g/mole Molar Mass of FeCl3.6H2O Molar…

Q: The drawing below shows a mixture of molecules: key carbon hydrogen nitrogen sulfur охудen chlorine…

A: We can solve the problem by considering the balanced chemical equation for the reaction - 3 H2 + N2…

Q: need help with the balanced chemical equation: a) Fe + O2 → Fe2O3 b) H2 + Cl2 → HCl c) Ag + H2S →…

A:

Q: The iodide ion is a dietary mineral essential to good nutrition. In countries where potassium iodide…

A: Given data contains, Mass of iodine is 150μg/day. Mass percent composition of Iodine is 76.45%.

Q: Answer the following questions regarding this chemical reaction: Cu(s) + HNO3(aq) -->…

A: Since moles of Cu(NO3)2  we want to produce = mass/molar mass molar mass = 187.5 g/mol => moles…

Q: A lawn fertilizer is rated as 4.57% nitrogen, meaning 4.57 g of N in 100 g of fertilizer. The…

A: We can solve the problem as below : 1 mole of Urea, (NH 2) 2 CO has = 2 moles of nitrogen. So, we…

Q: (3b-101) Balance the following equations (be sure to first convert any chemical names into…

A: In a balanced reaction, the number of atoms of each kind of element is same on both sides.  Now, in…

Q: One dose of an antacid contains 860. mg each of Mg(OH)2 and Al(OH)3. How many moles of each…

A: Given:- One dose of an antacid contains 860. mg each of Mg(OH)2 and.     Al(OH)3. To find:- How many…

Q: Solid sodium oxide and gaseous water are produced by the decomposition of solid sodium hydroxide…

A:

Q: product

A:

Q: Calculate the mass of 8.4 x 1 0 24 molecules of carbon dioxide (dry ice) (Hint: first calculate the…

A:

Q: Mn. S,O. n H20 is the general formula of a certain hydrate. When 234.9 g of the compound of the…

A:

Q: Name each ionic compound: (a) NaHCO 3, the active ingredient in baking soda; (b) Al 2(SO 4) 3, an…

A: While naming an ionic compound, first name the cation followed by anion.

Q: You wish to prepare 210 grams of 16.3 % Mg(NO3)2 You will need grams of magnesium nitrate and mL of…

A: Given that we have to prepare a 210 grams of 16.3 % MgNO32 solution. Recall the expression of mass…

Q: In the wintertime, it is common to sprinkle a salt, such as NaCl or MgCl2, on icy roads and…

A: In the wintertime, it is common to sprinkle a salt, such as NaCl or MgCl2, on icy roads and…

Q: Aqueous potassium nitrate (KNO3) and solid silver bromide are produced by the reaction of aqueous…

A: When aqueous potassium bromide react with aqueous silver nitrate it forms precipitate of silver…

Q: Read the information below, then answer the question. A laboratory assistant was experimenting with…

A: A laboratory assistant was experimenting with chemical reactions when she combined a small amount of…

Q: 4. Fill in the blanks. Acid Ка pKa Methanoic acid, HCOOH Ethanoic acid, CH3COOH Hydrocyanic acid,…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: Measurements of the exhaust gases of a hydrogen-fueled engine indicate a composition of 71.0% N2,…

A:

Q: Lithium carbonate, Li2CO3, contains 18.8 % lithium and is used in the treatment of mental illnesses…

A: The percent mass composition is also known as the mass percent is the mass of solute present in…

Q: Given the biaryl product, select the two reactants that would give this product via a Suzuki…

A: Given the biaryl product, select the two reactants that would give this product via a Suzuki…

Q: The zinc inside the penny reacted with acetic acid (C

A: Chemical reactions are expreseed in equation form , these equations are called " chemical…

Q: Complete and balance the chemical equation. chemical equation: K+ H,0 → Name the ionic product of…

A: In the  reaction between potassium and water we get the product's as potassium hydroxide and the…

Q: If 6 moles of Si and 6 moles of N2 are combined in a reaction flask, what remains in the reaction…

A:

Q: What is the mass of one molecule of water? O 1.0 amu O 18 amu O 1.8 amu O 180 amu

A: 1 mole H2O means molecular weight of H2O.

Q: Platinum is an expensive and rare metal used in catalytic converters. Much research has been devoted…

A: Nanoparticles are very small particles which range between 1 to 100 nm. As they are very small in…

Q: A major component of honey is fructose (C6H12O6) with a molar mass of 180.16 g/mol. A tablespoon…

A:

Q: Identify the type of reaction that is occurring in the video (represented by Darlene's equation…

A: The given reaction is, Pb(NO3)2 + 2KI → PbI2 +KNO3 To identify the type of reaction and to find, how…

Q: Part A A sample of 7.92 g of Mg(OH)2 is added to 24.2 mL of 0.225 MΗΝΟ, Part B Part C • Part D •…

A:

Q: Morphine sulfate used for severe pain relief is an opiate alkaloid isolated from the plant Papaver…

A: While writing the chemical formula, the number that represents the number of atoms is written as…

Q: A hydrate of iron (II) sulphate, FESO, xH,0 is 20.0% iron by mass. A) What is the chemical formula…

A: The compound given is FeSO4·xH2O. And mass percent of iron i.e. Fe in compound = 20.0 %. Assuming…

Q: Three monoprotic acids are shown in the table below.  Complete the table with the appropriate…

A: In this question, we have to find out the correct answer of given problem by the help of  Molecular…

Q: You wish to prepare 204 grams of 14.9% (w/w) NaNO3. Assume that the density of water is 1.00 g/mL.…

A:

Q: A 12 year old male patient has been prescribed Gaviscon suspension 5 mL four times a day. Gaviscon…

A: Given,           prescribed Gaviscon suspension= 5 mL        four time a day        moles of Na+ in…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.