Suppose a student places a beaker on his balance and does not tare it. Then, he adds three substances to the same beaker. The table shows the student's data before and after he adds each substance. Before After distilled water 57.220 g 70.950 g sodium acetate 70.950 g 73.650 g acetic acid 73.650 g 75.230 g What is the mass of the beaker?

Q: Determine the molar mass of NaAlSi3O8. Use the abbreviated form of the unit in your answer and round…

A: Molar mass of  Na :- 23 g/mol  Al :- 27 g/mol  Si :- 28 g/mol  O :- 16 g/mol  These all data are…

Q: What is the mass of 4 moles of helium, He

A: A mole is a unit of measurement in chemistry that represents a certain number of atoms or molecules.…

Q: What is the formula for mass

A: For liquids, mass can be calculated from the below formula.

Q: How it is useful and important the knowledge of mass percent and morality calculation in healthcare…

A: Mass percent is the measurement of an element in the molecule,compound or tablet in case of…

Q: Can you help me answer the following questions: 1. What is the mass of hydrous copper sulfate? 2.…

A: (1) Given compound name,         Hydrous copper sulfate

Q: Mass of crucible and cover is 43.92 g. The mass of crucible, cover, and magnesium is 44.62g. Mass of…

A: Empirical formula is the chemical formula  which represents the simple ratio of atoms of constituent…

Q: A 12.35 g sample of aluminum hydroxide contains how many mol of hydroxide ions?

A:

Q: How many moles of NO2 are in 8.2x1025 molecules of NO2? Round your answer to 1 decimal place. Your…

A: According to the mole concept, there are 6.022 × 1023 molecules present in 1 mole of every…

Q: The mass of silver in a 9.000 g of silver chloride,AgCl is ?

A:

Q: if the average male has a body mass of 70 kg, of which 60% is water, how many moles of water are in…

A:

Q: A grain of maize pollen has an average mass of 250 ng. How much would a mole of these pollen grains…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: The formula for dinitrogen tetrafluoride is . How many molecules are in 8.83 grams of dinitrogen…

A:

Q: Determine the number of atoms in 30.0 g of S.

A: The given mass of S is 30.0 g The molar mass of S is 32 g The conversion of mass to moles can be…

Q: Using your correct formula for copper chloride writes a balanced equation for the reaction that took…

A: Given : mass of copper chloride = 1.750 gram  To find : balanced chemical equation.  Solution : As…

Q: A 24.8 g sample of water contains how many water molecules?

A: Molar mass of water = 18 gWe have 24.8 g water no of moles of water = 24.8 g18g/mol…

Q: H H Ο H C. H H H The chemical formula for the molecule shown is empirical formula is and the

A: Step 1:Chemical formula for benzene is written by counting the total number of C atoms and then…

Q: determine the molar mass of the following organic compound. provide an answer to two decimal places.

A: Molar mass of the compound can be calculated through the following way-

Q: What is the mass of oxygen in 1 g of glutamine

A: Structure of glutamine is shown in image. It is a basic amino acid.  It's molecular weight is 146.14…

Q: How many grams of carbon are in 69.36 g of octane?

A: Molar mass of Octane(C8H18) is 114.23 g/mol One molecule of Octane contains 8 atoms of Carbon Molar…

Q: pure density liquid A. 31. What is the density of a mixture that is 2.3 moles A and 2.7 moles B?…

A:

Q: How many sugar molecules are in 7.5 g of sugar

A: Given data contains, Mass of sugar is 7.5g. Molar mass of sugar is 343 g/mol.

Q: How many millimoles of calcium nitrate contain 4.78 x 1022 formula units of calcium nitrate?

A: Avagadro number gives the number of atoms or molecules present in one mole of the substance. It has…

Q: What is the mass of 10.8 moles of water in grams

A:

Q: chromium metal is heated with sulfur to produce salt. use the masses below to determine the formula…

A: Moles of Cr used = mass / Atomic mass = 0.763 / 52 = 0.0147 Since the moles of Cr in the salt should…

Q: Calculate the number of phosphorus atoms in 0.9 g of phosphorus.Answer in units of atoms.

A: Given,Mass of phosphorus = 0.9 gMoles of phosphorus can be calculated as:

Q: how many formula units in 7.69 grams of MgO

A: The formula unit is used to define the empirical formula. So we are basically asked to find how many…

Q: What is the percent by mass of carbon

A: Percent by mass = (mass of C/total mass of compound) × 100%

Q: What is the mass of a sulfur hexafluoride molecule ? grams

A: Molecular formula for Sulphur hexafluoride is SF6

Q: It is asking for mass. How do I convert that to g?

A: We know that relation between number of moles and mass is given as :    Number of moles =   Mass of…

Q: How do I determine the number of atoms for a given element that are in a compound?

A: Some rules should be followed to calculate Number of elements in a compound.

Q: 325.2 g sample contains 42.3% NaCl. How many grams of NaCl are in the sample?

A: Mass of the solution is = 325.2 g The concentration of the solution is = 42.3 % NaCl Mass of NaCl in…

Q: A compound that contains only copper and chlorine contains 2.363 g copper and 2.637 g chlorine. What…

A:

Q: The molar mass of acetic acid is 60.1 g/mol. How many grams are in 3.5 moles of acetic acid? Do not…

A: Mass of any substance in a given mole of substance can be determined as below : Mass of substance =…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.