Calculate the density of the coin from your measurements, and determine how many significant figures should be included in the reported result.

Q: There are many minerals which contain silver. A 2.22 g sample of one of these, matildite, is placed…

A: The reaction between silve and magnesium chloride for analysis of Ag in matildite . 2 Ag + MgCl2 → 2…

Q: A chemist prepares a solution of barium chloride (BaCl,) by measuring out 15.3 g of barium chloride…

A: We have 15.3 g of barium chloride (BaCl2) which is dissolved in 50 mL of water.  First we have to…

Q: A sample is found to contain 8.47×10-6 g of salt. Express this quantity in nanograms.

A: Given that Mass of sample (salt) = 8.47 × 10-6 g Mass of sample  = ? ng

Q: The concentration of mercury in a polluted lake is 0.33 micrograms per liter of water. What is the…

A: Given,Volume of the lake = 1.5 x 1012cm30.33 micrograms per liter of water

Q: what is the density of the salt in g/mL?

A: Density = mass ÷ volume    Rule for significant figure in division:- Round off final answer as per…

Q: What is the correct assignment of the names of the following functional groups? но он CH:O OH CH30…

A:

Q: A general chemistry student found a chunk of metal in the basement of a friends house. She measured…

A: Density of a metal is specific and constant. Density = mass/volume  1 mL = 1 cm3 Given that: Mass of…

Q: In a laboratory, you determine that the density of a certain solid is 5.23 x 10 ° kg/mm. Convert…

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 chemistry student weighs out 0.0906 g of lactic acid (HC,H,0,) into a 250. mL volumetric flask and…

A:

Q: When aluminum metal reacts with HCI(aq), the products formed are AICI3(aq) and hydrogen. If 2.326…

A:

Q: Determine the volume of hexane that contains 5.33 × 1022 molecules of hexane. The density of hexane…

A: Please go through my hand written notes for the solution. The answer is 11.6 mL of hexane.

Q: A chemistry student needs 60.0 g of tetrahydrofuran for an experiment. By consulting the CRC…

A: The density is an intrinsic property that given the mass of an object per unit volume.…

Q: A chemist prepares a solution of copper(II) sulfate CuSO4 by measuring out 7.84g of copper(II)…

A:

Q: A chemist must prepare 450. mL of 1.00 M aqueous barium chloride (BaCl,) working solution. She'll do…

A: Molarity of stock BaCl2 solution(M1) = 1.27 M  Molarity of final BaCl2(M2) = 1.00 M V2 = 450. mL

Q: A chemist prepares a solution of sodium chloride NaCl by measuring out 6.51μmol of sodium chloride…

A: Answer:

Q: Calculate the volume of NaOH  solution the student will need to add to reach the equivalence point

A: Given ;-  Mass of HClO = 0.0909 g  Volume of HClO solution = 250.mL  Molar concentration of NaOH…

Q: A chemist must dilute 90.2 mL of 6.73 M aqueous silver perchlorate (AgCIO4) solution until the…

A:

Q: chemistry student weighs out 0.160g of sulfurous acid H2SO3, a diprotic acid, into a 250.mL…

A: The balanced chemical equation for the reaction between H2SO3 and NaOH is: H2SO3 + 2 NaOH → Na2SO3 +…

Q: the density of gallium triiodide, Gal, is 4.15g/cm^3. If the initial volume of water in a graduated…

A: The volume of the water increased after adding the crystal of gallium triiodide can be calculated…

Q: A chemistry student weighs out 0.105 g of sulfurous acid (H,SO,), a diprotic acid, into a 250. mL…

A:

Q: A chemist prepares a solution of nickel(II) chloride (NiCl,) by weighing out 78.0 g of nickel(II)…

A: Concentration is a definite amount of solute in a solvent .concentration is also the ratio of the…

Q: A chemistry student needs 30.0 g of diethylamine for an experiment. By consulting the CRC Handbook…

A: Ans

Q: The composition of a mixture of potassium chlorate and potassium chloride is to be determined. A 9.5…

A:

Q: An aqueous stock solution is 85.0% H3PO4 by mass and its density is 1.69 g/mL. What volume of this…

A: Answer:During the dilution water gradually added to the measured quantity of stock solution. Since,…

Q: A chemist must dilute 73.5 mL of 3.19 M aqueous zinc nitrate (Zn . She'll do this by adding…

A: (Before dilution) Initial volume of aqueous zinc nitrate Zn(NO3)2 solution = V1 = 73.5 mL  (1mL =…

Q: The stockroom has provided you with a 1.60 M stock solution of NaCl. What volume of this stock…

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute…

Q: Suppose

A:

Q: A chemist must prepare 750. mL of 115. mM aqueous copper(II) sulfate (CUSO,) working solution. He'll…

A: Given, Molarity of working solution = 0.115mM Volume of working solution = 750mL MOlarity of stock…

Q: The quantitative significance of “take a deep breath" varies, of course, with the individual. When…

A:

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

A:

Q: You have weighed out 24.5685 g irregular solid chips on an aluminum foil and transferred those chips…

A: Given : mass of solid = 24.5685  initial volume of water in cylinder = 50 mL And final volume of…

Q: A 25.0 mL aqueous stock solution of 3.7 M NaF is diluted to a final concentration of 1.8 M. What is…

A:

Q: Identify each of the diagrams shown here as a solid,liquid, gas, or mixture of two substances.

A: Solid particles are packed closely together. The force between the particles are strong enough that…

Q: You are trying to determine the density of a piece of metal. You use a balance and find that the…

A:

Q: Calculate the concentration in mol/L

A: Molarity or molar concentration of solution is ratio of number of moles of solute to the volume of…

Q: A student dissolved 230.8 grams of cesium chloride in 100.0 grams of 90 °C water.  The student then…

A: 43.8 g of substance has separated out as solid. The mass of cesium chloride present in dissolved…

Q: The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash…

A: Density of any substance can be defined as the ratio of the mass of the substance to its volume. It…

Q: A 100.0 mL graduated cylinder was used to measure the volume of water. The initial volume of the…

A: Given:Mass of coin = 96.51 g.Volume of coin = final volume – initial volumeVolume of coin = 56.0 mL…

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: A chemist prepares a solution of potassium iodide (KI) by measuring out 2.4 x 10² μmol of potassium…

A: we have to calculate the concentration of KI solution

Q: The mass of a uranium atom is 3.9526 × 10-22 grams. What is this value in nanograms? In your…

A: The mass of uranium atom = 3.9526×10–22 grams

Q: A chemist must prepare 750. mL of 240. mM aqueous sodium carbonate (Na₂CO3) working solution. He'll…

A:

Q: A chemist prepares a solution of silver(I) nitrate (AgNO3) by measuring out 1.9 × 10 μmol of…

A:

Q: A student reported the mass of ten glass beads as 2.507 ± 0.015 g. What should the student report as…

A:

Q: A chemist prepares a solution of nickel(II) chloride (NICI,) by measuring out 1.2x 10 jumol of…

A: Moles of NiCl2=1.2×102 μmol Volume=250 mL

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.