Since 1982 pennies change from being pure copper to Zinc with a copper coating. On average there is about 3.10 grams of zinc in each penny. If zinc is exposed and a penny is dropped into 4.00 g of hydrochloric acid will the acid dissolve all of the zinc? What mass of excess reactant remains once the reaction stops ? What mass of each product is made

Q: A chemist prepares a solution of mercury(I) chloride (Hg2Cl2) by measuring out 0.00013μmol of…

A:

Q: The use of freons is being phased out because of the damage these compounds do to the stratospheric…

A: a.

Q: -1 A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a…

A: Concentration of salt in Lake Parsons was found to be 25.6 g L-1. The average concentration of salts…

Q: When pure magnesium chloride dissolved in water, its ions dissociate completely in water. a) Comment…

A:

Q: A chemist prepares a solution of sodium chloride NaCl  by measuring out  4.37g  of sodium chloride…

A: Concentration in mol/L is known as molarity of the solution.It can be calculated bydividing the…

Q: You can calculate cost effectiveness using the following formula: volume of HCI neutralized per…

A: It is given that 23.73 mL of HCl is needed to neutralize one doze which is 2 tablets and the cost of…

Q: In a common laboratory experiment in general chemistry, students are asked to determine the relative…

A: To find: A method for separating two compounds of the given mixture.

Q: Mass of 1L Substance 810 g 1100 g 1250 g 1040 g Alcohol Ethylene glycol (antifreeze) Glycerin…

A:

Q: A sulfuric acid (H2SO4) solution with a concentration of 6.00 M has a density of 1.34 g/mL. What is…

A: Mass percent of solute in a solution represents its concentration in the given solution, which…

Q: 1. them. 3.2 CHEMISTRY HOLIDAY WORK 2022 Nalubula is investigating changes in mass of substances…

A: Mass of Zinc metal = 100 g  Mass of sulfuric acid = 200 g

Q: The main chemicals present in a cup of coffee are water, caffeine, and tannins (acidic polyphenols…

A: A question based on analytical separations that is to be accomplished.

Q: The mass of solute per 100 ml of solution is abbreviated as (m/v). Mass is not technically the same…

A:

Q: Solubility2. At room temperature, table sugar has a solubility of 200. g in 100 mL of water. In…

A: Given: For boiling water Solubility of sugar = 500g/100g of water. Mass of sugar added = 432g Volume…

Q: A chemist reads a solubility table and finds that 38.0 grams of table salt is the maximum amount of…

A: Solubility :- The maximum amount of solute that can be dissolved in given amount of solvent is…

Q: 3 AGNO, + K,PO, --> Ag.PO, + 3KNO, Describe what is happening Reactants combine into a large one…

A: Given  3AgNO3 + K3PO4 →Ag3PO4 + 3KNO3

Q: Mrs. A is currently taking Mucogel suspension at a dose of 10 mL after her 3 meals and at bedtime.…

A:

Q: A chemist adds 25.0 mL of a 0.0011 mol/L copper(II) fluoride (CuF,) solution to a reaction flask.…

A:

Q: which statement correctly describes the chlorine atom in the following process? cl- --> clo3…

A: For the reaction Cl-1 → ClO3-1 In Cl-1, chlorine is having an oxidation number of -1. And, In…

Q: Scandium sulfate, Sc2(SO4)3 (aq), dissociates when it is dissolved in water.   Write the…

A: Scandium Sulfate dissolves in water to give 2 scandium ions and 3 sulfate ions. We can determine the…

Q: In an Erlenmeyer flask, 25.75 grams of potassium nitrate was dissolved thoroughly to prepare a…

A: a.)   Moles of potassium nitrate = given mass ÷ molar mass = 25.75 ÷ 101 = 0.255 (mass = density X…

Q: calculate the grams of magnesium hydroxide

A: Given,  Moles of magnesium hydroxide = 0.001 mol Molar mass of magnesium hydroxide = 58.305 g/mol As…

Q: The concentration of Al3+ ion in a sample of spring water is 24.7 ppm. What mass of Al3+ ion is…

A: 1. Given that : Concentration of Al3+ ion in spring water (in ppm) = 24.7 ppm Density of spring…

Q: A chemist prepares a solution of silver(I) nitrate AgNO3 by measuring out 210.μmol of silver(I)…

A:

Q: A chemistry student weighs out 72. g of an unknown solid compound X and adds it to 550. mL of…

A: An student weighs out 72. g of an unknown solid compound X and adds it to 550. mL of distilled water…

Q: Which of these is NOT true of chemical changes?

A: Substance can change two ways  1. Physical change  2. Chemical change   we should study major…

Q: A chemist prepares a solution of barium chloride BaCl2 by measuring out 88.μmol of barium chloride…

A: From given  We are calculating concentration of the solution from the volume given as below

Q: 4. Choose the nonrenewable resourced that best match this description: low-carbon energy source. A.…

A: 4) The energy that best matches the description : low carbon energy source is nuclear energy.…

Q: A solution is made by mixing 5.40 g of toluene, CHg(1), with 954. mL of chloroform, CHCI3(1).…

A:

Q: III: Sucrose is the chemical name for the sugar we consume. Its solubility at 20°C is 204 g/100 g…

A: We can easily calculate the amount of soluble sugar in the given water at that particular…

Q: An alcoholic fermentation was conducted in the laboratory using 280 g glucose as substrate with a…

A: Formula used are given below: Density = Mass of substance / Volume of substance and Percent Volume =…

Q: Liquid octane  CH3CH26CH3  will react with gaseous oxygen  O2  to produce gaseous carbon dioxide…

A: Chemical reaction- It consists of reactant (starting material) and products (substances formed in…

Q: Sucrose is the chemical name for the sugar we consume. Its solubility at 20°C is 204 g/100 g water,…

A:

Q: Liquid octane (CH3(CH2)6CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide…

A:

Q: Can you actually write this out? It makes it much more difficult to read when it gets written out…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: You are a curious chemist, like Curious George (not Furious George). Therefore, you decide to find…

A: The question is based on the mole concept. we have been given concentration of the solution. we need…

Q: Vinegar Solutions Distilled white vinegar purchased in supermarkets generally has a 5% acidity level…

A: 8 % vinegar solution is being prepared by 5% and 12 % vinegar solutions. Let y ounces of the 12 %…

Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A:

Q: A drink recipe calls for 600 grams of sugar, 6 liters of water, and 3 package of flavoring. While…

A: Limiting Reagent concept is used wherever one ingredient is limited.

Q: A 15.6-g sample of sodium carbonate is added to a solution of acetic acid weighing 19.7 g. The two…

A:

Q: If you dissolve 27 g of sugar into 155 mL of water, what can youconclude about the mass and volume…

A: Density of a substance is equal to the mass of solution divided by its volume. Write the expression…

Q: A science fair volcano doesn't contain réal Java, of course, but in a very significant way, the…

A: An acid is a substance that enhances the concentration of hydrogen ions (H+) in solution. If the…

Q: An analytical chemist weighs out 0.159 g of an unknown monoprotic acid into a 250 mL volumetric…

A: Stoichiometry involves the calculation of concentration of solutions in the given conditions of…

Q: A student submerges an 18.0 gram metal sample in water. The density of the metal is known to be 12.5…

A: The given data: The mass of the sample = 18.0 g The density of the metal = 12.5 g/mL The final…

Q: Soil that is already depleted of its nutients needs fertilizer.One of the nutrients needed to…

A: We have to discuss which fertilizer is best for soil.

Q: 1.872 g C4H4O4 is dissolved in H20 and titrated with NaOH. 12.3 mL of a NaOH solution were required…

A: Applying formula  Molarity = no. of moles of solute /vol of sol(Lt)  No. Of moles of C4H4O4 =…

Q: Which substance showed no chemical change? a. hydrogen b. sodium c. carbon d. argon…

A: IDEAL GAS An ideal gas is one in which all atom-to-atom or molecule-to-molecule collisions are…

Q: A chemist prepares a solution of copper(II) fluoride  CuF2  by weighing out  0.07319g  of…

A: Mass of copper(II) flouride = 0.07319 g  Volume of water = 500 ml = 0.5 L  Concentration of…

Q: The following data are collected in an experiment to determine the amount of aspirin (the compound)…

A: 15.25 mL of base solution is required to neutralize 0.312 g of pure aspirin. Mass of a Bayer aspirin…

Q: An analytical chemist weighs out 0.206 g of an unknown monoprotic acid into a 250 mL volumetric…

A:

Q: Average human blood serum contains 18 mg of K+ and 365 mg of Cl- per 100 mL. Calculate The molar…

A: concentration = (no of moles of solute/ volume of solution in ml) × 1000   • pK = -log {K+} • pCl =…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".