Lead is an elementary substance that occurs as a malleable metal with a density of 11.4 g/mL at ambient temperature and pressure. Lead metal can be extracted from a mineral called galena, which contains 86.6%% lead by mass. A particular ore contains 68.5% galena by mass   If the lead can be extracted with 92.5%% efficiency, what mass of ore is required to make a lead sphere with a 7.00 cm radius? Express your answer with the appropriate units.

Q: Aqueous hydrochloric acid HCl reacts with solid sodium hydroxide NaOH to produce aqueous sodium…

A: HCl (aq)   +   NaOH (aq)  ----->  NaCl (aq)  +   H2O (l)Number of mol NaCl formed = number of mol…

Q: A chemist prepares a solution of potassium iodide (KI) by measuring out 338. g of potassium iodide…

A: The is about prepared a 500 mL KI solution. We have to calculate the concentration of KI solution…

Q: In 1993 the Minnesota Department of Health set a health risk limit for boron in groundwater of 600.…

A: Given that: mass per liter = 600 μg/L Volume = 94.0 mL To find the mass in micrograms of boron?

Q: Part 7) Looking towards summer, pretend for a moment that you won a scooter. You are so excited to…

A:

Q: A chemist must prepare 475. mL of 1.00 M aqueous sodium nitrate (NaNO3) working solution. He'll do…

A: Volume of sodium nitrate =475 mL = V2 Concentration of sodium nitrate =1.00 M =M2 Molarity=5.64mol/L…

Q: A chemist adds 335.0 mL of a 1.0 x 10 chemist has added to the flask. Be sure your answer has the…

A:

Q: A chemist adds 215.0 ml. of a 0.29 mol/L copper(11) sulfate (CUSO,) solution to a reaction flask.…

A: Mass of CuSO4 = 9.95 g

Q: A chemist must dilute 85.6 mL of 119. mM aqueous potassium permanganate (KMnO4) solution until the…

A:

Q: Large amounts of titanium metal are refined by reacting titanium(III) chloride solution with…

A: Given mass of Mg=1.46kg Given mass of Ti=1.62kg

Q: mol stock solution of silver A chemist makes 590. mL of silver perchlorate (AgClO,) working solution…

A: • The values provided in the question are:-  i) Initial volume of silver perchlorate solution ,V1 =…

Q: A chemist adds 0.45 L of a 2.9 × 10 M copper(II) fluoride (CuF,) solution to a reaction flask.…

A:

Q: e the concentration in mmol/L C

A:

Q: You take 3.40 hours to complete a full marathon, a total distance of 26.0 miles. What is your…

A: The ratio of total distance covered in a journey to the total time taken is termed as the average…

Q: A chemist adds 155.0 mL of a 0.22M barium chloride (BaCl₂) solution to a reaction flask. Calculate…

A: Given, Concentration of barium chloride (BaCl2) solution = 0.22 M = 0.22 mol/L Volume of barium…

Q: A chemist adds 70.0mL of a 2.40 x 10^−4 mol/L copper(II) fluoride (CuF2) solution to a reaction…

A: Given: The volume of copper(II) fluoride (CuF2) solution added = 70.0 mL The molarity of the…

Q: Gaseous ethane (CH3CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2)…

A:

Q: Dennis obtained a clean, dry stoppered flask. He determined the mass of the flask and stopper to be…

A: Given data,Mass of flask and stopper=32.634gMass of water+flask+stopper=59.479gDensity of…

Q: cur. How many grams of H2 will be produced? (s) +2 HCI(s) → MnCl2(aq) + H2(g) ease type in your…

A:

Q: Gaseous butane (CH3(CH2)2CH3) will react with gaseous oxygen O2 to produce gaseous carbon dioxide…

A: As given in the question that butane reacts with gaseous oxygen to produced carbon dioxide and…

Q: An antacid tablet weighing 0.938 g contained calcium carbonate as the active ingredient, in addition…

A: We know that, according to the law of conservation of mass in a chemical reaction, the mass of the…

Q: Since the pandemic has hit, more people are growing their own gardens and processing the fruits of…

A: Each quart jar requires = 6.05g alum So, 50 quart jars would require = 6.05*50 g = 302.5g alum %…

Q: 4.44 x 1066/2.82 x 1023 = O 1.57 x 1043 O 1.57 x 1041 O 1.57 x 1044 O 1.57 x 1042

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Q: The reaction between copper and sulfur is represented by the chemical equation shown below. What is…

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

A:

Q: must justify your choice with a calculation.

A:

Q: A chemist must dilute 45.2 mL of 3.27 M aquaous calcium bromide solution until the concetration…

A: As we know ,Moles the solute remains same on dilution but volume of the solution increases.Dilution…

Q: A chemist adds 310.0 mL of a 0.045 mmol/L sodium thiosulfate (Na₂S₂03) solution to a reaction flask.…

A:

Q: A chemist makes 240. mL of silver nitrate (AgNO3) working solution by adding distilled water to 170.…

A: Given data is as follows: The concentration of the stock solution (M1)M1 = 1.37  mol/L The volume of…

Q: An aluminum cylinder is 0.512 ft in length and has a diameter of 0.3142 inch. The density of…

A: The objective of the question is to calculate the volume, mass and the number of aluminum atoms in…

Q: Large amounts of titanium metal are refined by reacting titanium(III) chloride solution with…

A:

Q: A chemist adds 45.0 mL of a 1.5 mol/L nickel(II) chloride (NiCl₂) solution to a reaction flask.…

A: Answer: Number of moles of a compound is equal to the product of molar concentration and volume of…

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

A: Balancing of chemical reaction- It consists of reactant (starting material) and products…

Q: A chemist adds 75.0 mL of a 3.20 g/dL potassium dichromate (K,Cr,0, solution to a flask. Calculate…

A: Concentration of potassium dichromate(K2Cr2O7) = 3.20g/dL Volume of the solution = 75.0ml = 75.0ml ×…

Q: Large amounts of titanium metal are refined by reacting titanium(III) chloride solution with…

A:

Q: During an accident, the air bag inflates due to the decomposition reaction of sodium azide (NaN3).…

A: When NaN3 is heated, it decomposes to give solid sodium and nitrogen gas. NaN3→ 2Na(s)+3N2(g)

Q: A chemist adds 430.0 mL of a 2.89 mol/L calcium bromide (CaBr₂) solution to a reaction flask.…

A: To calculate the mass of calcium bromide added to the reaction flask, we need to use the following…

Q: A chemistry student must write down in her lab notebook the concentration of a solution of sodium…

A: Answer

Q: Gaseous ethane (CH,CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (CO,)…

A: Given  Mass of ethane  = 0.601 gram  Mass of Oxygen = 2.9 gram  Mass of water    =   ?

Q: Calculate the edge length in m and the volume in L for a cubical box that will “exactly” contain…

A: Given that: Number of Argon atoms present  = 4.32 x 1023 Diameter of Argon (D)= 3.4A° = 3.4×10-10m…

Q: When a mixture of aluminum powder and iron(III) oxide is ignited, it produces molten iron and…

A: According to law of conservation of mass, mass can neither be created nor be destroyed in any…

Q: The density of metal #2 is 3 times greater than the density of metal #1. 52.5 g of metal #2 caused…

A: Given Density of metal #2 is 3 time greater than density of metal #1

Q: A chardonnay wine is 13.5 percent by mass alcohol. If we consume 24 fluid oz of wine, and the…

A: Percent by mass alcohol = 13.5 % Volume of wine = 24 oz 1 oz = 29.57 mL 24 oz = 709.76 mL or 0.70976…

Q: A chemistry student must write down in her lab notebook the concentration of a solution of potassium…

A: In this we have to find concentration in g/mL   Given data:  Weight of empty graduated cylinder =…

Q: A chemist prepares a solution of sodium chloride (NaCl) by measuring out 81.7 g of sodium chloride…

A: Given: Mass of sodium chloride=81.7 g Volume=450 ml To find: Concentration in mol/L Solution:…

Q: mol stock solution of iron(III) bromide L A chemist makes 260. mL of iron(III) bromide (FeBr)…

A: C1 x V1 = C2 x V2

Q: chemist prepares a solution of aluminum chloride (AICI,) by measuring out 7.4 g of aluminum chloride…

A: Mass of AlCl3 = 7.4 g  Volume of solution = 100 mL  1000 mL = 1L  100 mL = 0.1 L

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

A: Reactions yield are estimated by the known values of limiting reagent. It is the compound that…

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.