Calculate the mass, in grams, of each of the following.   1.6×1023 gold atoms Express your answer using two significant figures.   2.84×1022 helium atoms Express your answer using three significant figures.   1.9×1023 lead atoms Express your answer using two significant figures.   8.0×1021 uranium atoms Express your answer using two significant figures.

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

A: The balanced chemical equation for given reaction is as follows,

Q: A sample of a pure aluminum halogen compound with a mass of 34.0 g contains 19.1 g of the unknown…

A: percent composition of halogen = mass of halogenmass of aluminium halogen * 100

Q: Gaseous ethane (CH₂CH3) will react with gaseous oxygen to produce gaseous carbon dioxide (CO₂) and…

A: Ethane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

Q: A raindrop has a mass of 50. mg and the Pacific Ocean has a mass of 7.08 × 104º kg. Use this…

A: Avogadro’s number is the number of atom/molecules present in one mole of any substance. And one mole…

Q: Aqueous sulfuric acid H2SO4 will react with solid sodium hydroxide NaOH to produce aqueous sodium…

A: Limiting reactant - Reactant species which react completely or present in less amount  Suppose a…

Q: Gaseous ethane (CH₂CH3) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂)…

A:

Q: A rectangular block of copper alloy has a mass of 1896 g. The dimensions of the block are 8.4 cm by…

A:

Q: Limiting reactants Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to…

A: In the given question we have to calculate the maximum mass of sodium chloride that could be…

Q: g and a glass of water has a mass of 0.050 kg. An oxygen atom has a mass of 2.66 × 10 Use this…

A: Answer: Each mole of a specie has number of particles equal to Avogadro number whose value is equal…

Q: Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A:

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

A: The balanced chemical reaction equation is as shown below. CH4(g)  +  2O2(g)  →  CO2(g)  +  2H2O(g)…

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

A:

Q: Can you help me understand what a significant figure is and help me with this problem?  46.97  How…

A: The digits which carry meaning supporting to its measurement resolution is called as significant…

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

A: Mass of ethane = 11.4 gMass of oxygen= 71 g Molar mass of ethane = 28.5 g/molMolar mass of…

Q: flask of mercury has a mass of 76.0 pounds (lbs). What is the mass of the flask in grams?  3.45 x…

A: The mass of flask of mercury  = 76pounds  1 Pounds = 453.92grams

Q: The chemical formula for sodium chloride is NaCl. A chemist measured the amount of sodium chloride…

A:

Q: Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: The reactant which produces the least amount of product is called limiting reagent and the amount of…

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

A: The reaction of aqueous HCl with NaOH results in the formation of aqueous NaCl and water. Amount of…

Q: You have a 15.0 M stock solution of Superstressin (something that little nervous dogs are known to…

A: By using dilution principle we can easily calculate  given problem. In dilution process no. of moles…

Q: You have a 16.0 M stock solution of Superstressin (something that little nervous dogs are known to…

A:

Q: A student is trying to identify the composition of a pure metal block by determining its density.…

A: Given that: Mass of block = 30.0 g Rectangular block = 2.00 cm × 3.00 cm × 1.40 cm Density of block…

Q: You can identify a metal using its density. If you have a metal brick that you measured to be 4…

A:

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

A: The number of moles of the substance is equal to the ratio of mass to the molar mass of the…

Q: The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8 mL…

A: We have to find the number of molecules of water in a given volume. The density of water is also…

Q: Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: Mass of HCl = 8.0 g Mass of NaOH = 13.6 g Mass of HCl left over by the chemical reaction = ?…

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

A: Mass of HCl = 2.55 gMass of NaOH = 1.3 gMass of sodium chloride (NaCl) formed = ?

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

A:

Q: metal sample with a mass of 0.073 kg is placed in a graduated cylinder that contains 60 ml of water.…

A: Density = Mass/Volume 1 Kg = 1000 g

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

A:

Q: A chemist must prepare 650. mL of 1.00 M aqueous sodium chloride (NaCl) working solution. She'll do…

A: Given :-  concentration of stock solution = 1.24 M  concentration of dilute solution = 1.00 M…

Q: You have been asked to compound 8 capsules of lithium sulfate, containing 6 mEq Li* per capsule. The…

A: Given,  1 capsule contains = 6 mEq of Li+  Molar mass of Li2SO4 = 109.9 g/mole Weight of 8 capsules…

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

A: We are reacting 14.1g of ethane with 26g of oxygen. We are supposed to calculate the left over mass…

Q: In a 1.018E2 g sample of iron(III) oxide, how many grams of iron are present? Your answer should…

A:

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

A: Maximum mass = 2.772 gram

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.