(a) What is the mass in amu of a carbon-12 atom? (b) Why is the atomic weight of carbon reported as 12.011 in the table of elements and the periodic table in the front inside cover of this text?

Q: What is the mass in kilograms of 5.6 x 1027 molecules of carbon tetraiodide?

A: Number of moles of a compound is equal to the ratio of the given mass of the compound to the molar…

Q: How many moles of zinc, Zn, are in 1.75×1024 Zn atoms?

A: Avogadro concept: According to this concept, we know that one mole of a substance contains…

Q: What is the mass, in grams, of 8.52 × 10 15 atoms of gold present in one nanoparticle?

A: given, atoms of gold present in one nanoparticle = 8.52 × 10 15 atoms the molar mass of gold, Au =…

Q: If the molecular mass of an oxide of nitrogen is 108 and 4.02 g of N combine with 11.48 g of O, what…

A: Given, Given mass of nitrogen = 4.02 g Molar mass of nitrogen = 14.01 g/mol Given mass of oxygen =…

Q: Give the number of atoms of the specified element in a formula unit of each of the following…

A: a) The given compound is C6H5COONH4 The number of a hydrogen atom is 9 The molecular mass of the…

Q: 4. What is the mass of 2.5 moles of Nickel (Ni) atoms?

A:

Q: What is the mass of a single bromine molecule, Br 2?

A: The bromine molecule is composed of two bromine atoms that are covalently bonded to one another.

Q: Why is the atomic weight of carbon reported as 12.011 in the table of elements and the periodic…

A: Mass of carbon is 12 amu

Q: How many moles of atoms are there in 2.12 x 10 43 atoms of Nickel?​

A: 1 mole = 6.022×1023 [ Avogadro's number ] If any metal consists of 6.022×1023 atoms it is said to…

Q: How much would 2.4 x 1024 molecules of N2O5 weigh?

A: Given- number of Molecules =2.4 ×10^24 molecules

Q: In which of these compounds are there twice as many Oxygen atoms as Hydrogen atoms?

A: To find :- The compound having oxygen atoms two times more than the hydrogen atoms.   We can easily…

Q: How many grams of aluminum are there in 4.05 x 10²5 molecules of Al½O3?

A: Given:- number of molecules of Al2O3 = 4.05 × 1025 molecules  To calculate :- mass of Al in grams

Q: How many Atoms are there in C6H12O6 ?

A: Atoms are the basic building blocks of all matter. They can combine to form molecules, whose…

Q: What is the mass of 2.55 x 1021 molecules of Co(NO3)2?

A: Mass= 0.775 grams.

Q: 4. What is the mass of 7.75 moles of magnesium metal?

A:

Q: What is the mass of 5.58 x 10^23 molecules of carbon tetrachloride?

A:

Q: What is the mass of 8.3 x 10^23 molecules of ibruprofen (C13H18O2 )?

A: Given data, Number of molecules of ibruprofen =8.3x1023 It is known that, one mole of a substance…

Q: What percentage of the mass of a phosphorus 32 atom is contributed by its electrons, given the mass…

A: Phosphorus-32 has 15 electrons. Mass of electrons in Phosphorus-32 can be calculated as follows,…

Q: How many molecules are there in 1000 grams of  C12H22O11  or table sugar?

A: We have to calculate the  number of molecules in 1000 g of table sugar.

Q: What mass of ethanol (C2H6O) would contain 7.0 x 1026 atoms of carbon?

A:

Q: How many moles of zinc, Zn, are in 1.35×10^24 Zn atoms?

A: Question is based on mole concept. We have to calculate number of moles of zinc.

Q: What is the mass in kilograms (kg) of 4.29 X 1024 atoms of palladium?

A:

Q: If the mass percentage of O in a sample is 68% and the total mass of the sample is 4.128 Kilograms-…

A:

Q: What is the mass in grams of 9.76 × 1012 atoms of naturally occurring potassium?

A: mass = 6.32 x 10-10 g

Q: What is the mass of aluminum if the same amount of electricity used to generate 500 g copper metal…

A: All the necessary calculations have been done in the following step.

Q: How many atoms of hydrogen are found in 3.92 mol of hexane, C6H14?

A:

Q: 4. How many atoms of Iodine are contain ed in a sample of Iodine that has a mass of 1.247 x 105 amu?

A: Introduction: An atomic mass unit is a unit used to express the relative maases of atoms.One atomic…

Q: What is the mass in grams of 2.00 × 105 atoms of naturally occurring neon?

A: Given : Number of atoms of neon i.e Ne = 2.00 X 105 atoms.

Q: What is the molar mass of the compound with the formula X2Y2Z7, where X is an alkali metal from the…

A: Given: The compound with the molecular formula, X2Y2Z7, X= alkali metal from the 3rd period. Y= an…

Q: What is the mass, in grams, of Vitamin C (C6H8O6) that contains 1.076 grams of carbon?

A: Molar mass of C = 12.01 g/mol mass(C)= 1.076 g number of mol of C, n = mass of C/molar mass of C…

Q: Give the number of atoms of the specified element in aformula unit of each of the following…

A:

Q: What is the mass in grams of 2.68 * 1022 atoms of uranium?

A:

Q: 2) What is the mass of 5.13 moles of NazCr207?

A: Given :- number of moles of Na2Cr2O7 = 5.13 mol  To calculate : Mass of Na2Cr2O7

Q: 7. What is the mass in grams, of Vitamin C (C6H8O6) that contains 1.076 grams of carbon?

A: Given mass of Carbon = 1.076 g Molar mass of Carbon = 12.01 g/mol Molar mass of C6H8O6 = 176.12…

Q: How many atoms of hydrogen are there in 1 kg of methane (CH4)?

A:

Q: How many grams of Copper are in 9.03 x 1023 atoms of Copper (Cu)?

A: we have to calculate mass of copper in                               9.03×1023 atoms of copper…

Q: 8. How many moles of magnesium is 3.01 x 102² atoms of magnesium?

A:

Q: How many atoms of hydrogen are found in 7.12 mol of pentane, C5H12?

A:

Q: What is the molecular weight of sugar, C6H12O6 in atomic mass units? And If you had one mole of…

A:

Q: 6. How many hydrogen atoms are there in 0.75 mol of C,H10O?

A:

Q: What is the average mass, in grams, of one Zn atom?

A: Given :- Number of atoms of Zn = 1 atom  To calculate :-  Average molar mass of single atom of Zn…

Q: What is the mass occupied by 2.3 X 10 6Smolecules of Oxygen gas?

A: Number of molecules of oxygen = 2.3×1065 molecules

Q: Consider the following equation: The mass number of element X is: 247A + 18B → 89C + {x}X + 2 1n

A: 247A  + 18 B ---------------> 89C  +   xX  + 2  1n

Q: Calculate the mass of antimony(III) lodide, Sblg, that can be produced by the reaction of 143 g of…

A:

Q: Given that you had 1 mol glucose (C 6H 12O 6), what would the mole ratio of glucose to oxygen be?

A: Balance Chemical equation means number of atoms or ions should be equal in both side (reactant and…

Q: Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of…

A: Isotopes are elements with the same number of protons but differ in the number of neutrons. The…

Q: 4. How many grams are in 1.98 x 1021 atoms of Fe?

A: We have to calculate the mass of Fe.

Q: What would be the mass, in kilograms, of a block of graphite consisting of 1.55 x 1026 carbon atoms?

A:

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".