A 20.0 g sample of Ca contains how many calcium atoms?

Q: Suppose you have a sample of sodium weighing 11.50 g. How many atoms of sodium are present in the…

A: Given,Sodium weight 11.50 gMolar mass of sodium 22.989769 g/ mole

Q: How many titanium atoms are in a pure titanium bicycleframe with a mass of 1.28 kg?

A: The number of titanium atoms is in a pure titanium bicycle frame with a mass of 1.28 kg has to be…

Q: How many grams are in moles of F? Atomic weight of F is=19.00

A: Answer :-  Grams in moles of F = 19.00 g…

Q: percent

A: CuO  + H2 ------------------ Cu  + H2o  Mm of CuO = 79g No of mole of Cu is = 4.7/79= 0.21mol From…

Q: What is the mass of 100 platinum atoms?

A: Atomic mass, the amount of matter found in the element atom. It is expressed as a multiple of…

Q: How many atoms of vanadium are in 1.28 grams of vanadium

A: One mole of any chemical substance has Avogadro’s constant or Avogadro’s number of atoms.…

Q: The atomic mass of aluminum is 26.982u. How many alluminum atoms are in a 4.55g sample of aluminum?

A: Mass of aluminium sample=4.55 g The atomic mass of aluminum =26.982 u Moles of aluminium=4.5526.982…

Q: How many carbon atoms are there in a diamond (pure carbon) with a mass of 52 mg?

A: The number of carbon atoms can be calculated as follows,

Q: A toy top has a mass of 32.0lg Cu. How many atoms Cu are in this spinning top, given that the…

A:

Q: What is the mass of a sample of aluminum that has the same number of atoms that are in 20.0 g of…

A: The value is given as follows:

Q: A toy top has a mass of 32.0 g Cu. How many atoms Cu are in this spinning top, given that the…

A: We know , in 1 mole of any atoms , there is avogadro number of atoms i.e. 6.022×1023 number of…

Q: A sample of Al weighs 52.0 grams. Will a sample of Hg that contains the same number of atoms weigh…

A:

Q: What is the mass percent of chlorine in sodium chloride?

A: Mass of one mole of chlorine=35.43 Mass of one mol sodium chloride (NaCl)=58.44 g The mass…

Q: A toy top has a mass of 32.0 |g Cu . How many atoms Cu are in this spinning top, given that the…

A: Given, mass of copper (Cu) =32.0 gatomic mass of copper (Cu) =63.55 gmolwe are asked to calculate…

Q: calculate the mass of a sample that contains 23 nitrogen atoms

A: Mole is the unit for the number of atoms or molecules of a material. One mole = 6.022×1023 molecular…

Q: 26. Diamond is one form of elemental carbon. An engagement ring contains a diamond weighing 1.25…

A:

Q: Aluminum (Al) is element 13 on the periodic table. A sample contains 4.56×1022 atoms of Al.…

A: In this question, we will calculate the amount of Al in grams unit.  You can see below.

Q: Calculate the mass of 4.53 × 1021 chromium atoms in grams.

A:

Q: How to convert from mass percent to mass of an element ?

A: We can calculate mass of element if we have have information about mass percent and total mass.

Q: A toy top has a mass of 32.0 g Cu. How many atoms Cu are in this spinning top, given that the…

A: Given information: Mass of Cu = 32.0 g Molar mass of Cu = 63.55 g/mol

Q: Calculate the mass of 500. atoms of iron (Fe).

A:

Q: 9. If a cabin et is made of 5.65 grams of Gold, how many atoms of gold are in the cabinet?

A:

Q: How many grams of sulfur tetrafluoride contain 2.82 grams of F ?

A: The mass of one mole of molecules of a substance is known as its molar mass The number of moles of a…

Q: any atoms of cesium are in 10.1 grams ium phosphate? 1

A: Cesium phosphate Cs3PO4 molar mass = 494 g/mol Moles of Cs3PO4=mass/molar mass    = 10.1/494 =…

Q: A toy top has a mass of 32.0 g Cu. How many atoms Cu are in this spinning top, given that the…

A:

Q: A toy top has a mass of 32.0g Cu. How many atoms Cu are in the spinning top, given that the average…

A: Given information: Mass of Cu = 32.0 g Molar mass of Cu = 63.55 g/mol

Q: A modern penny weighs 2.5 g but is only 2.52% copper by mass. Calculate the number of cooper atoms…

A: given values :  mass of penny = 2.5 g mass % of copper = 2.52% formula of mass % : mass % = mass of…

Q: [R Calculate the mass of 900. atoms of arsenic (As). Mass g

A: According to the question, we need to calculate the mass of 900 atoms of Arsenic. we know that: 1…

Q: A 3.20 mol sample of aluminum represents how many atoms?

A: Number of atoms = moles of Atom X Avogadro's number  where Avogadro's number = 6.022 X 1023

Q: A gold ring contains 3.01 x 1023 atoms of gold, Au. How many grams of gold are in the ring?

A: The number of moles (n) of a substance is calculated by dividing its number of atoms (No) by…

Q: What is the mass of 500 gold atoms in grams?

A:

Q: You have a 20.0 g sample of silver metal. You are given 10.0 g of another metal and told that this…

A: The situation is possible or not has to be determined.

Q: atoms

A: it is made of 3 tiny partical  known as electron ,proton and neutron  Neutron  and proton make…

Q: How many atoms are present in 44.96 g of

A: Mass of scandium = 44.96 g Molar masa(MM) of Scandium = 44.96 g/mol Moles = mass/MM  = 44.96/44.96 =…

Q: How many moles of Li are there in a sample of Li that contains 3.08×1024 atoms? _____ moles

A:

Q: d. 5.90 mol of Ca to atoms of Ca

A: From mole number or avagadro number we can calculate number of atoms of "Ca".

Q: Identify the substance based on the mass. Gold (0.241 g). Calculate how many atoms the substance…

A:

Q: Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.58 kg of…

A:

Q: How many atoms are present in 44.96 g of scandium? atoms

A: Given mass of scandium is 44.96 g Molar mass of scandium(Sc)=44.96 g/mol

Q: How many titanium atoms are in a pure titanium bicycle frame with a mass of 1.34 kg ?

A: Given that mass of titanium bicycle frame = 1.34 kg = 1340 g Molar mass of titanium (Ti) = 47.867…

Q: Calculate the mass in grams of 15 atoms C

A: Mole is defined as    Interms of particles :  1 mole = 6.022 x 1023 atoms  Interms of mass :  1…

Q: how many atoms of silver are in 100 grams of silver ?

A: Molar mass is the amount of a substance where 6.023×1023 no of atoms/molecules of that substance are…

Q: 1.21 x 1028 atoms of oxygen gas (o,)? 1 mol = 6.02 x %3D F7 FB F9 F10 F11 F12

A: Number of Molecules of O2 gas = ( Number of atoms of O2 gas / 2 )  Number of Molecules of O2 gas = (…

Q: How many lithium atoms are present in 49.17 moles of lithium?

A: 1 mole contains 6.022 ×1023 atoms

Q: How many atoms of calcium are contained in 112.0 grams of calcium?

A: Given :-  mass of calcium = 112.0 g  To calculate :-  total number of calcium atoms present in the…

Q: How many atoms of K are present in 195.49 grams of K?

A: relation  s/w  moles of particles & molar massn = mM  ∴ m = given massM = molar massn = molesn =…

Q: A 3.6 g sample of lithium contains how many atoms?

A: Since moles = mass / molar mass  Given : mass of Li i.e lithium = 3.6 g And since molar mass of Li =…

Q: How many gold (Au) atoms are there in a 5.0 g sample of that is 50% Au by mass?

A: Answer: 7.6421 × 1021 number of gold (Au) atoms are there in a 5.0 g sample of that is 50% Au by…

Q: Suppose you have a sample of sodium weighing 14.10g. How many atoms of sodium are present in this…

A: approach to solve this type of question is - first convert the given amount into the mole. we know…

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.