A sample of potassium weighs 68.2g. How many moles of potassium is this (1 mol= molar mass of Potassium)?

Q: if 0.274 moles of a substance weigh 62.5 g, what is the molar mass of the substance in units of…

A: 1 mole = 6.022×1023 [ Avogadro's number ] The mass of one mole of molecules of a substance is called…

Q: How many conversions are needed to go from mass (g) of the given to Mole (Y) of the find ?

A: We have been asked to find the no. Of steps needed to go from mass to mole of a compound.

Q: How many conversions are needed to go from mole (X) of the given to particles of the find ?

A: A question based on mole concept that is to be accomplished.

Q: Difine the term molar mass

A: Molar mass is a physical properties of a substances

Q: How many grams would 71,934,010,495 atoms of a substance weigh if it has a molar mass of 23.7889…

A: Number of atoms = 71,934,010,495 atoms  6.02×1023 atoms = 1 mol 71,934,010,495 atoms =…

Q: 48.6 g of Cu equals how many moles?

A: Molar mass of Cu, Mwt = 63.546 g/mol Given Weight , W = 48.6 g

Q: The number of molecules in a sample of NH3 weighing 8.50g?

A:

Q: A sample is found to contain 66.8% NaHCO3 by mass. What is the mass of NaHCO3 in 4.25g of the…

A: Mass percent :- The mass of a substance present in 100 grams of sample is called its mass percent .…

Q: How many moles of each element are in one mole of Be(OH)2?

A: Given, One mole Be(OH)2  Firstly check all the elements present in in Be(OH)2 If it is given that…

Q: How many moles of oxygen gas are present if there are 4.35 x 1025 atoms of oxygen in the sample?

A: answer = 36.11 moles of oxygen gas.

Q: If we want to make 2.5 moles of NH3, how many grams of nitrogen will we need?

A: The balanced chemical equation for the reaction that produces ammonia (NH3) from nitrogen (N2) and…

Q: How many moles of H2 would be produced

A: Given :- number of moles of Al = 16.0 mol To calculate :- number of moles of H2 produced

Q: What is the mass in grams of 37.10 moles of KBr?

A:

Q: (b) The number of moles of potassium that contains 8.93 × 104 atoms. x 10 mol

A: Given  Atoms of potassium = 8.93 x 1025  To find = number of moles of potassium

Q: Calculate the mass, in grams, of  0.607  mol of hydrogen peroxide,  H2O2 . mass of  H2O2:

A:

Q: Provide answer to the following

A: Density of a particular substance is the compactness of atoms present in it. Density can be…

Q: Is the subscript of an element the same as its number of moles? Does the subscript mean how much…

A:

Q: before 1959, oxygen was popularly used to define the unit of mol. in 1967, the international…

A:

Q: How many grams of fertilizer, or potassium sulfate are there in 42.3 moles of potassium sulfate?

A: The Mass of Potassium Sulfate can be calculated as -

Q: 5. How many moles of are there in 7.4 x 10" molecules of AGNO3?

A: Given, Molecules of AgNO3 = 7.4 x 1023 Molecules Moles of AgNO3 = ?

Q: If 7.80x10¹⁸ atoms of a substance weighs 62.5g what is the molar mass of the substance in units of…

A: The number of atoms present in one mole of any substance is called as Avogadro's number which is…

Q: molar mass of P4O7  in grams/mol

A:

Q: Consider the chemical reaction N2 + 3H2 = 2NH3    If one begins with 0.25 mole N2  and excess…

A:

Q: If 0.274 moles of a substance weight 62.5 g what is the molar mass of the substance in units of…

A: as we know,                      number of moles = mass / molar mass                    molar mass=…

Q: The molar mass of CCl4 is 153.81 g/mol. How many grams of CCl4 are needed to have 7.3 mol?

A: Given: Moles of CCl4=7.3 mol Molar Mass of CCl4=153.81 g/mol   To find: Mass of CCl4

Q: One mole of hydrogen peroxide, H2O2, would consist of how many molecules?

A: Given : Moles of H2O2 = 1 mol

Q: Converting Mass to Moles using Molar Mass I  A sample of chloroethane, C2H5Cl, mass of 18.5 g. What…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: How many moles are there in 23 g of FeO?

A: Given: mass of FeO = 23 g

Q: What mass of CO2 (44 g/mol.) is produced?

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

Q: Given the empirical formula of NO2 and a molar mass of 92.0 g/mol, what is the molecular formula?

A:

Q: Determine the number of moles in 234 g of F,

A: Given  Mass of F2                 = 234 gram  Number of Moles   = ? Molar mass of F     = 19 gm/mole…

Q: The number of atoms in 25.7gAl?

A: The number of atoms in 25.7gAl are

Q: Calculate the mass of NaOH in 0.2 moles of NaOH

A: We have given that Mole of NaOH = 0.2 mole Molar mass of NaOH = 40.0g/mole

Q: How many molecules of carbon monoxide, CO, comprise 2.34 moles?

A: Given : Moles of CO = 2.34 mol.

Q: A 100.00 g sample of the compound XCl3 is decomposed to produce 90.77 g of the element chlorine.…

A: The reaction taking place will be  2 XCl3 -----> X2 + 3 Cl2  Hence moles of Cl2 formed / moles of…

Q: The mass in grams of 2.0x10-2 moles of C6H12O6

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

Q: If you have 30.5g of Ni(OH)2, please calculate the number of moles this would be equivalent to.

A: Here we shall use the expression which relates the mass with number of moles which is given as:…

Q: What is the amount of H present in the original sample, in moles?

A: We have moles of H2O in the compound = 0.00610   (= Given mass of water (0.110 g) divided by the…

Q: 5. a) How many moles is 12.04 x 10 molecules of CaCO,? b) What is the mass of this many moles?

A: Since we know that   1 mole of any substance = 6.022 × 1023 molecules of that substance. And  Number…

Q: How many molecules are present in 4.61×10^2 mol of O2?

A: Given data, Number of mol of O2 = 4.61 × 102 Calculating the molecules present. Therefore, The…

Q: how many Moles(mol)are in a sample containing 9.03x10^24 molecules of Co^2?   . How many atoms of…

A: 1 mol of CO2 contains = 6.022 × 1023 molecules of CO2 or 6.022 × 1023  molecules of CO2 = 1 mol of…

Q: If 0.164 moles of a substance weighs 32.5 g, what is the molar mass of the substance, in units of…

A: 1 mole of a substance means 6.022x1023  number of that substance.

Q: Molybdenum has a molar mass of 95.94 g/mol. How many moles are in 150.0g Molybdenum? *

A: Since we know thta number of mole of any substance is calculated by dividing the mass of substance…

Q: 0.274 moles of a substance weighs 62.5 g.  What is the molar mass of the substance?

A: No.of moles= mass(g)/molarmass(g/mol)  i.e  n = w/M  Where   n = 0.274 mol  w = 62.5 g  M = ?

Q: A 52-kg woman has 7.2 x 10 mol of hemoglobin (molar mass = 64456 g/mol ) in her blood. How many…

A: We know that 1 mole of any substance contains Avogadro number of molecules i.e 6.022 ×1023…

Q: y moles of H

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 8.6 x 10²³ formula units of NaCl is equal to how many moles H?

A: Applying mole concept and avogadro number.

Q: 3. See the example in Introduction for set-up of calculations. Calculate the number of a) moles of F…

A: Number of moles of F and atoms of F in 32.5g of F2 calculated as follows

Q: A large organic molecule has a mass of 1.41 * 10-21 kg. What is the molar mass of this compound?

A: Given that, Mass of organic molecule= 1.41×10-21 kg Molar mass is given by the following formula…

Q: What is the formula to calculate the molar mass of H3COH with the units g/mol?

A: Molar mass is numerically equal to the molecular weight since molecular weight is sum of all…

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.