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

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: the number of copper atoms in a 3.0g lump of copper is 2.8x1022 .how many electrons present in the…

A: Number of copper atoms = 2.8 × 1022  We need to determine number of electrons present.

Q: 12. How many grams are there in 1 x 1024 molecules of BC13?

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

Q: How many moles are there in 2.75 x 10^24 atoms of copper?

A: we know that one mole of copper contain Avogadro's number of atoms Avogadro's number= 6.023 × 1023

Q: If the atomic mass of an element is X, what is the mass in grams of 1.027 x 1020 atoms of the…

A: Atomic mass of element (given)=X Number of atoms present =1.027×1020 atom

Q: How much does 4.28 x 10 21 atoms of Nickel weigh?

A: We know that, one mole of any substance contains 6.022 × 1023 atoms. We can determine the weight by…

Q: How many moles of Na are there in 1.28 x1025 atoms of Na?

A:

Q: Manganese is a transition element essential for the growth of bones. What is the mass in grams of…

A: 1 mol  = 6.022 × 1023 atoms 1 atom   =   1 / 6.022 × 1023 atoms   Mass in grams = Moles × Molar mass…

Q: what is the mass, in grams, of 3.01 x10^23 copper atoms

A: Number of copper atoms = 3.01 × 1023  We need to determine mass of copper.

Q: 2. If you want to produce 85 g of silicon, how many grams of magnesium will you need? How many grams…

A: The chemical reaction that takes place between sand and magnesium metal to produce elemental silicon…

Q: What is the mass, in grams, of 2.08 × 1024 aluminum (Al) atoms?

A: The question is based on mole concept. We have to determine mass of aluminium present.

Q: 3.00 x 1023 atoms

A: Mass of Ca = 20.0 g Molar mass(MM) of Ca = 40.08 g Moles of Ca = Mass/MM     = 20.0/40.08   = 0.500…

Q: How many grams does 1.44 x 1028 carbon atoms weigh?

A: To calculate the mass in grams for the atoms  First we have to convert the number of Atoms into…

Q: How many grams of iron are needed to combine with 24.6 g of O to make Fe2O3?

A:

Q: The number of copper atoms in a 3.0 g lump of copper is 2.8 x 10^22,how many electrons are pesent in…

A:

Q: 2. Balance the following equations (in the formation of heavier elements). a.*He +He - Be b. “He +n…

A: Given nuclear equations are :  a). 4He + 4He -----------> Be  b). 4He + n -------------> 4He…

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: How many boron atoms are there in 2.00 g of boron?

A:

Q: An element consists of two isotopes and has an average atomic weight of 85.561 a.m.u. The abundance…

A:

Q: In an experiment, the reaction of 100.0 g of iodine produced 144.9 g of a compound formed from…

A: It is an example of law of conservation of mass

Q: What is the mass of 6.02 x 1023 Cu atoms?

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: A. What is the mass in grams of 1.11 x 10^24 atoms of zinc? B.How many zinc atoms are there in 28.5…

A: We’ll calculate the mass of Zn and the number of atoms present in Zn by applying simple mole concept…

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: 9. How many grams are in 3.01 x 1023 atoms of carbon?

A:

Q: Calculate the number of atoms in a 2.92 x103 g sample of boron.

A: Firat calculate number of moles.

Q: What is the percentage of nitrogen, by mass, in calciumnitrate?(a) 8.54% (b) 17.1% (c) 13.7% (d)…

A: Calcium nitrate is a compound of formula CaNO32. One mole of calcium nitrate contains two moles of…

Q: 3. What is the mass of 2.51 x 1024 atoms (particles) of lead metal?

A: Molar mass of lead is 207.2 g/mol. Given number of atoms are 2.54×1024

Q: How many grams of nitrogen are there in 7.5 g of Ca(NO 3) 2?

A: We have 2 moles (atoms)  of Nitrogen atom in 1mol (molecule) of. Calcium nitrate . Or 14×2= 28 g of…

Q: If there are 8.59 x 1022 molecules of NaCl in a salt shaker, what is the mass of NaCl?

A:

Q: How many grams of iron are needed to combine with 26.3 g of O to make Fe2O3?

A:

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

A:

Q: Lithium nitride reacts with water to produce ammonia and lithium hydroxide according to the equation…

A: Given;

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: what is the atomic weight of O3?

A: Atomic weight of O3 = ?

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

A:

Q: What is the mass (in grams) of 8.907 x 1047atoms of silver?

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: How many grams of Kr are there in a sample of Kr that contains 6.43 x 1023 atoms?

A: Mole is a unit of measurement. One mole of a substance is something that contains 6.022 x 1023…

Q: What is the mass of 4.50 x 1044 Cu atoms?

A: Given :- number of Cu atoms = 4.50 × 1022 atoms  To calculate :- mass of Cu (in g)

Q: you have 13.02 x1023 atoms of nitrogen, what would you expect its mass to be?

A:

Q: How many moles are in 3.0 x 1023 atoms of sulfur?

A: Number of moles =Given number of atomsNA

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: How many grams of magnesium would you expect to find in 56.8g of magnesium nitrate?

A: Given : Mass of magnesium nitrate i.e Mg(NO3)2 = 56.8 g

Q: Uranium (VI) fluoride (UFe) can be used for the enrichment uranium. What is the elemental…

A: