Calculate the mass (in grams) of the following: 1.4×1023 goldatoms Express your answer using two significant figures.

Q: A chemist wants to make 6.5 L of a 0.280M CaCl2 solution. What mass of CaCl2 (in g) should the…

A: Molarity of a solution is defined as the number of moles of solute present in one litre of the…

Q: How many molecules of sulfuric acid are in 5.00 g of sulfuric acid? Write your answer with the…

A:

Q: What is the mass in grams of 0.485 moles of barium (Ba)? Enter your answer in decimal form with…

A:

Q: What is the mass, in grams, of 1.20 mol of iron (III) sulfate? Express your answer using three…

A: Given,  Moles of Iron(III) sulfate = 1.20 mol  Molar mass of Iron(III) sulfate = 399.88 g/mol

Q: Ocean water contains 3.3 %% NaClNaCl by mass. What mass of ocean water in grams contains 43.8 gg of…

A: Mass percent of NaCl = 3.3 %

Q: Lithium is the least dense metallic element. Its density is 0.534 g/mL. What is the mass of lithium…

A: Given : Density = 0.534 g/mL Volume = 1.00 in3 Convert in3 into mL as follows. 1 in3 = 16.3871 mL

Q: What is the mass, in grams, of each of the following? A)2.4×10−3 mol Sb (Express your answer using…

A: Welcome to bartleby !

Q: A 10.00 mL solution of a certain food dye has a concentration of 1.47 g /L. What is the total mass…

A: Given: The concentration of food dye  solution, (C) = 1.47 g/L. The volume of the solution, (V) =…

Q: Convert 412.0 g silver acetate to moles of silver acetate. Express the answer by rounding to the…

A: Given that ,  Mass of silver acetate = 412.0 g  Moles of silver acetate = ?  We need to convert mass…

Q: A chemist prepares a solution of calcium bromide (CaBr,) by measuring out 0.667 kg of calcium…

A: A Chemist prepares a solution of calcium bromide(CaBr2) by measuring out 0.667kg of calcium bromide…

Q: What is the mass, in grams, of each of the following? 2.5×10−3 molmol SbSb Express your answer…

A: Given:  Moles of Sb =2.5×10−3 mol To calculate: Mass of Sb in grams

Q: The number of particles in 1 mole of hydrogen gas is __________. Express your answer using three…

A: Given : Moles of Hydrogen gas i.e H2 gas = 1 mol.

Q: 0.155 mol Na Express your answer using three significant figures.

A: Given: The moles of Na = 0.155 mol.

Q: Tin reacts with oxygen to form tin oxide. In a particular laboratory experiment in which oxygen…

A: We are given different data for 3 different trials.  We have to calculate for each trials…

Q: A laboratory procedure calls for making 510.0 mL of a 1.2 M KNO3 solution. Part A How much KNO3 in…

A: Given, Molarity of solution = 1.2 M volume of solution = 510.0 mL = 0.51 L we are asked to calculate…

Q: An atom of a particular element has a volume of 7.8 x 10-31 m. What is this volume in cubic…

A: We know that, 1 nm= 10-9 m then,

Q: If 122 mL of allM glucose solution is diluted to 550.0 mL, what is the molarity of the diluted…

A:

Q: How many moles of KClKCl are contained in each of the following?

A: The number of moles of KCl(n) can be calculated using molarity (M) and volume (V) by using the…

Q: A chemist determined by measurements that 0.0300 moles of potassium participated in a chemical…

A: Since,  molar mass of pottasium=39 g/mol so, given, moles of K=0.0300 mole

Q: A chemist determines by measurements that 0.0400 moles of iodine solid participate in a chemical…

A: Given, moles of solid iodine (I2) = 0.0400 mol mass of solid iodine (I2) = ? Note:  molar mass of…

Q: Ammonia (NH3) chemically reacts with oxygen gas (O2) to produce nitric oxide (NO) and water (H,O).…

A:

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 chemist weighs a steel cylinder of compressed oxygen, O2, and finds that it has a mass of 1027.8…

A: Molar mass of compound = sum of mass of each element  Mole of compound = mass ÷ molar mass

Q: What is the mass, in grams, of 7.940 x 1023 molecules of zinc acetate? Enter your answer with at…

A: Given number of molecules of zinc acetate=7.940×1023 Chemical formula of zinc acetate, ZnC4H6O4…

Q: A chemist needs 32.0 g of phenol, C6H5OH, for an experiment. How many moles of phenol is this?…

A: Given, Mass of phenol (C6H5OH) = 32.0 g Moles of phenol (C6H5OH) = ? Note: Atomic mass of Carbon (C)…

Q: Calculate the mass % of "S" in CS2. Round-off your answer to two significant figures and enter the…

A: Atomic mass of S = 32.06 g/mol Atomic mass of C= 12.01 g/mol Molecular mass of CS2 = 12.01 +…

Q: What is the mass, in grams, of each of the following? A) 44.1 mol Xe Express your answer using…

A: Since we know that  1mol of any substance = molar mass of that substance We will calculate the mass…

Q: What is the mass in grams of 9.35 x 1024 molecules of CO2 ? Please express in decimal form, not…

A: Given- Molecules of CO2 = 9.35 x 1024 To find - Mass of CO2 in grams

Q: What is the mass in grams of 9.25 x 10^24 molecules of CO2? Write the answer in decimal form.

A:

Q: What are the significant figures in  0.0915 moles

A: Applying concept of significant figures determination.

Q: How many moles of Ca are there in 913 grams? Answer in decimal notation, without units, to 3…

A: • The values provided in the question are:-    i) Mass of Calcium = 913 g  ii) Molar mass of…

Q: Do the following calculations involving moles and molar masses: 1.  How many moles of NH3 are there…

A: Given,1.  5.0×1024 molecules of NH3 number of moles is:2. Mass of one molecule of NH3  is3. Mass of…

Q: What is the mass, in grams, of each of the following?

A: Number of moles = mass/molar mass  So, Mass = moles × molar mass

Q: Ammonia (NH,) chemically reacts with oxygen gas (0,) to produce nitric oxide (NO) and water (H,O).…

A: According to balanced chemical equation 5 moles of oxygen gas react to produce 6 moles of water…

Q: A chemist weighs a steel cylinder of compressed oxygen, O2, and finds that it has a mass of 1027.8…

A:

Q: What is the mass, in grams, of each of the following? I.) 2.1×10−3 mol Sb Express your answer…

A:

Q: An atom of a particular element has a volume of 7.8 x 10-" m . What is this volume in cubic…

A: Given: The volume of atom = 7.8 x 10-31 m3  This value of volume has to be converted into cubic…

Q: What is the mass of 1.89x10^23  atoms of chlorine?

A: Mass of 1 mol Cl = 35.453 g  Mass of 1 mol Cl2 = 70.906 g  1 mol contains = 6.022 × 1023…

Q: Calculate the mass in grams of 13.0 mol of copper(I) sulfate. Enter your answer in scientific…

A:

Q: How many grams are needed to prepare a 5,067 g of CaCl2 of 6 % solution? (Type your answer with the…

A:

Q: What is the mass, in grams, of 28.74 mLmL of acetone? Express your answer using four significant…

A: Here, we have to find the mass of acetone (in grams) of 28.74 mL of acetone.

Q: 5. The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8…

A: Given: Density of water = 0.967 g/mL. And the volume of water = 499.8 mL

Q: How many moles are in every conversion factor? It depends on the element. 23. 02 x 10ô 01 0 6.02 x…

A: It depends on the element. Number of moles depends on the given amount and molar mass of the…

Q: A 195 mL sample of ocean water contains 7.0 gg of NaCl. What is the molarity of the solution with…

A: Given,  Mass of NaCl in ocean water= 7.0g Volume of ocean water = 195 mL Molarity of NaCl solution…

Q: An atom of a particular element has a volume of 7.8 x 10-31 m. What is this volume in cubic…

A: 1 m = 109 nm 1 m3 = (109)3 nm3 = 1027 nm3

Q: What is the mass of 3.90 x 1021 formula units of KBr? Answer in standard notation to three…

A: What is the mass of 3.90 x 1021 formula units of KBr?

Q: In some polluted city air the amount of lead was measured at 3.1 x 10^-6 g/m^3. What is the amount…

A: Cubic meter and cubic centimeter are some common units of volume. Similarly, grams and kilograms are…

Q: Ocean water contains 3.5  %   NaCl  by mass. What mass of ocean water in grams contains 48.8  g  of…

A:

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.