Zinc ore (rock) is treated with sulfuric acid producing a solution with undissolved zinc ore and releasing hydrogen sulfide gas.  If 50.0 mL of sulfuric acid (sulfuric acid density is 1.153 g/mL) is added to 10.8 g of zinc ore the resulting solution has a mass of 65.1 g.  Calculate the volume of hydrogen sulfide gas produced (hydrogen sulfide density is 1.393 g/L).  Remember the law of conservation of mass.

Q: the percentage by mass of water in a sample of dog food

A: In this we have to explain the percentage by mass of water in a sample of dog food  and draw a flow…

Q: The solubility of CoCl2 in water is 52.9 g of CoCl2 per 100 g of water. 105.3 g of CoCl2 are added…

A: Given: The solubility of CoCl2 in water is 52.9 g of CoCl2 per 100 g of water. 105.3 g of CoCl2 are…

Q: Questions 1.39

A: The reaction is as follows,

Q: Classify each change as physical or chemical. (a) the rusting of iron(b) the evaporation of…

A: Physical change changes the size, shape or phase of substance, Chemical change is a type of change…

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: Given : Mass of water in swimming pool = 8.45 X 104 gallons  Mass percent of chlorine = 6.00 %  And…

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: A 0.660 ? aqueous solution of KBr has a total mass of 77.0 g. What masses of solute and solvent are…

A:

Q: The liquid substances mercury (density = 13.6 g/mL), water(1.00 g/mL), and cyclohexane (0.778 g/mL)…

A: Given: Density of mercury is 13.6 g/mL Density of water is 1.00 g/mL Density of cyclohexane is 0.778…

Q: Butane (C4H10) plus Oxygen yields carbon dioxide plus water

A: Given compound is butane. Butane reacts with oxygen to form carbon dioxide, water and liberate large…

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity - it is the amount of heat required to change the temperature by 1 Degree.

Q: What is the mass of a golf ball traveling at 82.0 ms 1? The rest mass of a golf ball is 45.9 g, as…

A:

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity is the amount of energy in the form of heat,  takes for increasing the temperature of…

Q: Mass of 20 popcorn kernels + container 4.26 g Mass of container 2.16 g Mass of popcorn kernels…

A: The number of moles of water lost can be found out from the mass of water lost. The number of moles…

Q: Classify each property as physical or chemical. (a) the tendency of copper to turn green when…

A: Chemistry is the branch of science which deals chemicals, the chemical behavior of matter and the…

Q: During product recovery and washing, sodium carbonate is required to neutralize the acid present.…

A: The reaction between sodium carbonate and Sulfuric acid will be as follows…

Q: Gaseous methane (CH4) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2)…

A: Given that : The mass of methane = 1.44 g The mass of oxygen = 7.3 g We have to calculate the…

Q: 2. Classify the following materials as heterogeneous mixture, solutions, compounds, or plements. a.…

A:

Q: Classify the following changes of substances as PHYSICAL or CHEMICAL: 12(s)+ sodium bisulfate - 2Nal…

A:

Q: You wish to prepare 211 grams of 16.6 % Mg(CH3CO0)2. You will need grams of magnesium acetate and mL…

A: Mass of solution is = 211 g Percent concentration of Mg(CH3COO)2 is = 16.6 % Density of water is =…

Q: Assume household vinegar contains 5.00% acetic acid by weight and that the density of vinegar is the…

A: Given,  household vinegar contains 5.00% acetic acid by weight.  And the density of vinegar is the…

Q: A manufacturer of paint claims that a gallon (3.78L) of latex paint can cover 365 ft2 of the surface…

A: A numerical problem based on dimensional analysis, which is to be accomplished.

Q: 4. How do you distinguish a. Chemical properties from physical properties b. Distillation from…

A:

Q: A stock solution of sodium chloride solution was prepared (at 25°C) by dissolving 250 mg of sodium…

A: Ammonium hydroxide is NH4OH. It will dissociate as : NH4OH(aq.)↔ NH4+ (aq.) +  OH- (aq.) Here,…

Q: À mixture of sand, salt, and iodine was separated by first heating the mixture to drive off the…

A: The mixture contains sand, salt and iodine. Mass of dried sand and evaporating dish = 103.987 g…

Q: A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the…

A: Mass of clean pycnometer = 25.151 g Mass of clean pycnometer plus water = 42.481 g  Initial mass of…

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

A:

Q: When 35.0 grams of KBr are dissolved in 245 grams of water, an expression for the resulting solution…

A: Answer is  a) 35.0 g KBR per 280 g solution

Q: Lipitor, a pharmaceutical drug that has been shown to lower "bad" cholesterol levels while raising…

A: Given  The mass of the 1 pill = 1.0g  Active ingredient contain in each pill = 5.5% i.e., (5.5/100)…

Q: Soft wood chips weighing 17.2 kg are placed in an iron vessel and mixed with 150.1 kg water and…

A: (a)

Q: Classify each property as physical or chemical.a. the tendency of ethyl alcohol to burnb. the shine…

A: a. Ethyl alcohol burns as it reacts with oxygen in air to form carbon dioxide and water- this is a…

Q: Is the mixture described in the table homogeneous or heterogeneous? Explain how you can tell.

A: A substance which consists of two or more elements or compounds which are not chemically reactive is…

Q: IV (intravenous) solutions are mixtures of sugars, salts and other aqueous solutes fed directly to a…

A: Answer

Q: Assume household vinegar contains 5% acetic acid by weight and that the density of vinegar is the…

A: Solution Vinegar may be a bitter liquid consisting principally of carboxylic acid and water.…

Q: HUIA (OH]= 1.1 x 10° M [H,O'] = 5.0 x 107 M Milk

A:

Q: IV (intravenous) solutions are mixtures of sugars, salts and other aqueous solutes fed directly to a…

A: We have given that  Concentration of glucose = 5% by mass   Given that : density of Solution : 1g/mL…

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity is amount of heat required by the object to change its temperature by degree 1.

Q: A chemist samples a river's water to measure the amount of fertilizer runoff from the area farms. In…

A: PPM and the PPB are units applied in atmospheric chemistry to represent the concentration of the…

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: a density of 1.30 g/mL. What mass, in kilograms, of NaOH is in 6.00 L

A: Volume of solution(V)= 6.00 L = 6000 mL  Density (d) = 1.30 g/mL  Mass of solution= V × d.…

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: The solubility of benzoic acid in water at room temperature is 0.54 g per 100 mL of water.  If 4.95…

A: Crystals are formed by a saturated solution and by the solute which is present in extra amount and…

Q: Classify each property as physical or chemical. (a) the tendency of silver to tarnish(b) the shine…

A: Physical property is the characteristics of matter that is not associated with a change in its…

Q: A solution is prepared by dissolving 49.3 g of KBr in enough water to form 473 mL of solution.…

A:

Q: Filtration is the most appropriate method for separating a solution of water and which substance? A.…

A: Filtration is the most appropriate method for separating a solution of water and which substance?

Q: Classify each property as physical or chemical. a. the boiling point of ethyl alcohol b. the…

A: Physical property: Property of material which can be obtained without disturbing identity of…

Q: 4. (a) The sodium ion did not take part in this chemical reaction. What do we call such an ion? (b)…

A: sodium ions are spectator ions and undergoes solvation that is gets surrounded by negative pole of…

Q: The molecular liquid chloroform (CHCl3) has a density of 1.48 g/mL, while the molecular liquid…

A: The mass of 44.0 mL of CHCl3 is calculated as shown below where m1, d, and V is the mass, density…

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: Aqueous hydrochloric acid  HCl  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A:

Q: compound? element? solution? heterogeneous? pure substances? a. soda pop b. used motor oil freshly…

A: Compound is defined as two or more elements mixed together then compound formula Mixture is defined…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.