Calculate the amount in moles of molecules for each substance listed. b. a sample of diphosphorus pentoxide, P2O5(s), containing a total of 4.91 × 102² atoms of phosphorus and oxygen

Q: Consider a mixture of 10 billion O2 molecules and 10 billion H2 molecules. In what way is this…

A: The 1st mixture contains 10 billion or 109 O2 molecules and H2 molecules. The 2nd mixture has 109…

Q: What is the mass (in g) of a magnesium phosphide sample if it contains 7.9 x 1023 phosphorus atoms?

A:

Q: You gave 4.5 × 1025 aluminum atoms . How many moles of aluminum atoms do you have?

A:

Q: What is the mass in grams of 3.61 x10^23 atoms of copper?     How many copper atoms are there in…

A: The atomic mass of an element is used to determine the number of moles of an element. One mole of…

Q: Chemical analyses conducted by the first Mars Rover robotic vehicle in its 1997 mission collected…

A:

Q: An element (A) has 5 isotopes. The masses (and abundances) of the isotopes 46A, 47A, 48A, 50A are…

A: Given:Average atomic mass = 47.87u.49A/50A = 3.361.

Q: How many moles of cobalt (Co) atoms are there in 7.00  ×  109 (7.00 billion) Co atoms?

A: Given number of cobalt atoms is 7.00 × 109.

Q: How many moles of calcium atoms do you have if you have 8.13 × 10²¹ atoms of calcium. (The mass of…

A: One mole of any substance contains 6.023×1023 particles. This is called as Avogadro’s number. The…

Q: he amounts of gold (Au) in the crowns of three members of the royal family of King Midas are shown…

A: 1mole of a substance contains Avogadros's number of atoms( 6.022×1023).

Q: Calculate the mass of H2SO4.

A: Mass of H2SO4 is 98.

Q: How many moles of iron atoms do you have if you have 8.80 × 10²³ atoms of iron. (The mass of one…

A: 1 mole of a substance contains 6.022×1023 molecules.

Q: How many moles of silver atoms do you have if you have 2.15 × 10²¹ atoms of silver. (The mass of one…

A: Number of moles (n) is given by- n= given mass/molar mass Or n= given no. of particles/Avogadro…

Q: A hypothetical element, E, has two stable isotopes. One isotope has a natural abundance of 66.909%…

A:

Q: A 1/20 inch thick lead sheet is used for protection from medical X-rays. If a single lead atom has a…

A: To find out how many lead atoms thick the sheet is, we need to convert the thickness of the lead…

Q: For which element does a sample of 1.5055 × 1024 atoms have a total mass of 70.215 g?

A: The objective of the question is to identify the element for which a sample of 1.5055 x 10^24 atoms…

Q: Determine the mass in grams of 7.56 × 10²¹ atoms of carbon. (The mass of one mole of carbon is 12.01…

A:

Q: Calculate the mass of 5.70 X 10^22 tungsten atoms.

A: Given No of atoms of tungsten = 5.70 x 1022   Also, Molar mass of tungsten =  183.84 g

Q: Iron exists in nature as a mixture of predominantly three isotopes: ⁵⁴₂₆Fe (53.94 amu), ⁵⁶₂₆Fe…

A: We have to calculate the percentage of rarest of three isotopes.

Q: How many moles of sodium atoms do you have if you have 8.40 × 10²³ atoms of sodium. (The mass of one…

A: Given number of sodium atoms = 8.40 × 10²³ Number of sodium atoms in one mole = 6.022×1023

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 32.1 g of oxygen. Calculate the mass of the…

A: Given,  Mass of O in a sample of C2HF3O2 = 32.1 g Calculate the mass of C2HF3O2 sample = ?

Q: chemical formula

A:

Q: A certain organic compound has the formula C9H11O2.  A sample of this compound weighs 85.88 grams.…

A: The formula of the given organic compound is C9H11O2.  Mass of the compound=85.88 grams. The molar…

Q: The active ingredient in baking soda is NaHCO3. How many grams of NaHCO3 are needed to provide 2.15…

A: The active ingredient in baking soda is NaHCO3.  One atom of NaHCO3. contains = 3 atoms of O. or, 1…

Q: Determine the mass in grams of 5.51 × 10²¹ atoms of arsenic. (The mass of one mole of arsenic is…

A:

Q: How many moles of calcium atoms do you have if you have 4.94 × 10²¹ atoms of calcium. (The mass of…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: Consider a sample of carbon tetrafluoride that contains 2.35 × 10²⁴ atoms of fluorine. What is the…

A: Carbon tetrafluoride is also called  Tetrafluoromethane and it is covalent compound  in which carbon…

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 82.182.1 g of fluorine. Calculate the mass of…

A: Given, trifluoroacetic acid C2HF3O2, contains 82.182.1 g of fluorine Molar Mass of trifluoroacetic…

Q: 6.90 x 1024 formula units of sodium nitrite, NaNO₂ Express your answer with the appropriate units.…

A: Multiple  questions

Q: Given the table of atomic weights listed below, determine the molecular mass (weight) of the…

A:

Q: Calculate the number of grams of lithium in 5.44 x 1021 atoms of lithium.

A: Given,  Number of atoms of Lithium=5.44×10^21 We know, molar mass of Lithium atom=6.941g/mol Also…

Q: How many moles of silver atoms do you have if you have 2.76 × 10²¹ atoms of silver. (The mass of one…

A:

Q: 4.39 x 10^27 P4 O10 molecules = Atoms

A:

Q: What is the mass of 3.31×1023 atoms of argon?    How many argon atoms are there in 42.9 grams of…

A:

Q: How many moles of iron atoms do you have if you have 5.60 × 10²³ atoms of iron. (The mass of one…

A: We know that 1 mole=6.023 x 10^23 atoms/molecules/ions Given, Number of atoms of iron=5.60 x 10^23

Q: 7.53 × 10^23 molecules of an element has a mass of 88.64 g. What is the identity of this molecular…

A: 7.53 × 1023 molecules of an element have a mass of 88.64 g. This molecular element is to be…

Q: Gold (Au) has a density of 19.32 g-cm-3. If a spherical gold nanoparticle has a diameter of 50 nm…

A: Density of Gold nanoparticle is 19.32 g/cm3 and its volume is 7*104 nm3.

Q: 22 Calculate the mass of 3.0 × 1044 atoms of sulfur. O 1.6 g O 16 g O 160 g O 0.16 g

A:

Q: There are two gas compounds that are made out of element  A and B. This is the mass percentage of…

A: Given: Mass percentage: Compound 1: 30.43% A, 69.57% B Compound 2: 63.64% A, 36.36% B

Q: How many moles of iron atoms do you have if you have 8.00 × 1023 atoms of iron. ( The mass of one…

A: This problem can be solved by knowing the fact that one mole contains 6.022×1023 atoms.

Q: Iron exists in nature as a mixture of predominantly three isotopes: 54 426Fe (53.94 amu), 5626Fe…

A: It is given that Iron exists in nature as a mixture of predominantly three isotopes: 5426Fe (53.94…

Q: grams of hydrogen in 8.92 x 1022 molecules NH3

A:

Q: How many moles of silver atoms do you have if you have 5.09 × 10²¹ atoms of silver. (The mass of one…

A: Given: Number of Atoms of Silver = 5.09 × 10²¹  To Determine: Moles of silver atoms

Q: What is the total number of oxygen atoms on the left-hand side of this chemical equation? 2 Ca₂…

A:

Q: Determine the mass in grams of 7.98 × 10²¹ atoms of carbon. (The mass of one mole of carbon is 12.01…

A:

Q: Determine the mass in grams of 8.14 × 10²¹ atoms of copper. (The mass of one mole of copper is 63.55…

A: The objective of the question is to find the mass in grams of a given number of copper atoms. We…

Q: How many moles of potassium atoms do you have if you have 4.40 × 10²² atoms of potassium. (The mass…

A: The mass of one mole of potassium is 39.10gm.   39.10gm of potassium contain=avogadro number…

Q: how many grams is a sample of Al2(SO4)3 that contains 7.97 x 10^23 oxygen atoms

A: