If a sample of B10H12[N(CH3)3]2 is found to contain 7.48 · 1020 B atoms how many N atoms are present? Express your answer in scientific notation. x 10

Q: 8. How many oxygen atoms are contained in 5.25 g of NO2 gas?

A:

Q: How many kilograms of NaCl contain 3.49 x 10 ions? There are 2 moles of ions per mole of NaCl, and 1…

A: Given  number of ions of NaCl= 3.49 x 1025 ions molar mass of NaCl = 58.5 g/mol 1 mole  = 6.022 x…

Q: How many oxygen atoms are there in 0.825 g of AI(NO2)3 (MW Al(NO2)3 = 165.00 amu) а. 3.01 X 1021 b.…

A: Given: Mass of Al(NO2)3 = 0.825 g Molar mass of Al(NO2)3 = 165.00 amu.

Q: Calculate the mass percentage composition of aluminum in the compound AL(NO3)3. Please report the…

A: Assuming we have 1 mole of Al(NO3)3  Hence mass of Al(NO3)3  = moles X molar mass = molar mass X 1…

Q: Q6. What is the radius (in cm) of a cylindrical silicon block (density = 2.03 g/cm3) with the height…

A: The radius of cylindrical silicon block can be easily determined by its density and the total mass…

Q: 19.78 mL of bromine contains 6.022 x 1023 bromine molecules. How many bromine atoms are in 3.00 L of…

A: Given -> Volume (V1) = 19.78 ml = 0.01978 L (1L = 1000 ml) Number of bromine molecules in V1=…

Q: 23. Ammonia is synthesized from hydrogen and nitrogen. N2 (g) + 3 H2(g) - -> 2 NH3 (g)lf 5.00 L of…

A: Given that: N2(g) + 3H2(g) ....> 2NH3(g)  Volume of N2(V) = 5.00L T = 298 K P = 3.00 atm

Q: 5) 0.7971 g of molecule, X, is found to contain 3.0 x 1022 atoms. Deduce the identity of X. Given N…

A: Given: Mass of X2 = 0.7971 g Atoms of X2 = 3.0×1022 NA = 6.023×1023 mol-1

Q: 5. A 2.000 g sample of CoCl2·xH2O is dried in an oven. When the anhydrous salt is removed from the…

A: By calculating moles of CoCl2 and H2O we can find value of x.

Q: Using the density of argon= 1.54 g/L, how many argon atoms are present in a room with dimensions of…

A: To solve this problem first we calculate the volume of room and then we will calculate the mass of…

Q: One mole (molecular equivalent) of gold has a mass of 196.9655 g.  One mole of anything equals 6.022…

A: Given : Mass of gold (1 mole)= 196.9655 g  Diameter of gold = 3.58 × 10-10 m Block of gold of mass =…

Q: How many B atoms are there in 5.1 mols of B? Please give your answer in terms of scientific notation…

A: Solution The mole thought may be a convenient technique of expressing the number of a substance. Any…

Q: A sample of oxygen gas weighs 28.4 g. How many atoms of oxygen are present in this sample? The…

A: Here we have told that a sample of oxygen gas is weighed at 28.4 g. Now we have to tell how many…

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: What is the weight of the grams of Na equivalent to the same number of atoms as those in 15 g of K?

A: Given: Mass of potassium= 15 g  The molar mass of potassium = 39.098 g/mol Moles of potassium=Mass ÷…

Q: If 9.05 moles of carbon monoxide is formed in the air then mass of carbon monoxide is (A) 253.49 g…

A:

Q: B How may oxygen atoms are in 225 g of oxygen gas? 4.23 x 102+ b. 6.84 x 10²4 8.47 x 10²4 1.69 x…

A: To calculate the number of oxygen atoms in 225 g of Oxygen gas.

Q: 200 g of a silicon compound is decomposed, resulting in 41 g of solid silicon and the remainder of…

A: Calculate the number of moles of both the compounds. nSiClF3 = WSiClF3MSiClF3nSiClF3 =200 g120.5…

Q: 56.7 g of H,S reacts with 30.9 g of SO, according to this reaction + SO, 2H,S + So, = 35 + 2H,0 What…

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Q: Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2Mg (s) + O2 (g) 2M9O…

A: From the given reaction we can see that 2 moles of Mg burns to produce 2 moles of MgO  hence moles…

Q: why at the end do you write mass of O2, but then didn't do 32g as the multiplier?

A: To calculate mass of O2 , first moles are calculated and then 32.0 g/mol would be used as multiplier…

Q: If 33.3 grams of hydrogen gas were mixed with 45.55 grams of nitrogen gas, then how many grams of…

A: Nitrogen gas reacts with hydrogen gas to form ammonia. The equation for the balanced chemical…

Q: Is the volume of H2 produced larger than the volume of O2 producedbecause (a) hydrogen atoms are…

A: Given: The volume of H2 produced is larger than the volume of O2

Q: How many grams will 8.53 x 1023 molecules of C6H12O6 (180.16 g/mol) weigh?

A:

Q: 5. A bottle of Ibuprofen (C,,H,,O,) contains 1.204 x 1024 molecules. How many grams of ibuprofen are…

A: The molecular weight is 206.29 g/mol means 1 mol of ibuprofen = 206.29 g of ibuprofen

Q: What number should be placed in the blank in order for this equation to follow the Law of…

A:

Q: How many oxygen atoms are there in 2.10 g of Al2(S208)3 (MW A12(S208)3 = 630.34 amu) %3D O a. 4.82 X…

A:

Q: How many moles would 1.00 x 10^23 molecules of methane(CH4) represent

A: Given  Number of molecule of CH4  = 1 × 1023 molecule  Number of mole = ?

Q: Calculate the mass (in mg) of 9.85 x 1019 CCl2F2 molecules.

A: The relation between mass and number of moles of a substance is as follows,…

Q: How much does 8.44 x 1063 molecules of water weigh?​

A: Molecular weight of water =18g/mol i.e. 1  mol of water (6.023 x 1023 molecules) of water has mass…

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

A: Number of moles is given by the ratio of mass of the substance to that of the molar mass of the…

Q: The density of aluminum is 2.7 g/cm3; that of silicon is 2.3 g/cm3. Explain why Si has the lower…

A: Silicon, the symbol Si and the atomic number 14, are a chemical element. It is a tough, brittle,…

Q: A sulfur dioxide gas sample has a volume of 242.62 mL at 242279 pascals and 82.99oF. Calculate the…

A:

Q: Which of the following is equal to 6.022 x 10^23 molecules? * 31.98 g Q_2

A: We will choose Correct statement

Q: 1.28 x 1023 molecules of C10H22 would have what number of carbon atoms? 6.

A:

Q: What is the mass of 4.12 x 10^23 water molecules?

A: The number of water molecules is = 4.12×1023 molecules The mass of these molecules is =?

Q: 0.5Ν2 (NH3 (g) H2 (g) (g) + 1.5H2 (g) +1.2502 (g) + 0.502 (g) NH3 (g) · NO (g) H2O (1) ΔΗ1° + 1.5H2O…

A:

Q: 14. The fertilizer ammonium sulfate [(NH,),So,] is prepared by the reaction between ammonia (NH3)…

A:

Q: Which of the following has the smallest mass? O 0.150 kg of Br, O 255. g of Cl, O 7.50 mol of F2 O…

A:

Q: Convert 3.45 x 10 ^ 25 molecules of copper (III) sulfide to atoms of sulfur

A: In the molecular formula, the subscript written next to the atom represents the number of that atom…

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 atoms of oxygen are in 231.000 grams of lead (IV) oxide? Enter your answer using Canvas's…

A: moles : Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large…

Q: A fictional cubed-shaped bacterium, Bacterius cubis, occupies a volume of 2.8 femtoliters. This…

A:

Q: Al,O3 Br2 (9) AIBT, 3. If you begin the reaction with 5.62 x 1023 molecules of aluminum bromide and…

A: firstly , we will write a balanced chemical equation of above reaction.…

Q: 1.) A pure Alum salt KAl(SO4)212H2O contains 300 mg of Potassium. What is the weight of pure Alum?

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

Q: 6.61 x1019 molecules of hydrogen gas,(H2) are equal to how many grams of hydrogen gas?

A: SOLUTION 6.022×1023 molecules of H2 gas is equal to 1 mol of H2 gas. 1 molecule of H2 gas is…

Q: Is there a difference between a homogeneous mixture of hydrogen and oxygen in a 2:1 ration and a…

A: Is there a difference between a homogeneous mixture of hydrogen and oxygen in a 2:1 ration and 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".