How many Cu atoms are present in a 75.0 cm length of 20 gauge copper wire? A 20 gauge copper wire has a diameter if 0.03196 in. Copper density is 8.92 g/cm^3

Q: Strontium phosphate, Sr3(PO4)2, is a crystalline substance used in medicine and industry. How many…

A: Given that, Sr3(PO4)2

Q: Normal saline is an isotonic (to humans) solution which is used in medicine for volume…

A: Given: Concentration of NaCl in saline = 0.9 g/dL. And volume of saline solution = 1 L Since 1 L =…

Q: A compound contains 21.6% Na, 33.3% Cl, and 45.1% O. Write the empirical formula and name the…

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Q: (a) H2 _?_ x1025 H atoms  (b) Ca(NO3)2 _?_ x1023 Ca2+ ions  _?_ x1024 NO3- ions  (c) N2O2 _?_ x 1024…

A: The mole is actually contains Avogadro’s number of particles in elements or compounds. Avogadro’s…

Q: Manganese sulfate forms the hydrate MnSO4⋅?H2O(s)MnSO4⋅nH2O(s) . If this hydrate is heated to a…

A: Given : Mass of MnSO4.nH2O taken = 10.140 g And mass of MnSO4 produced = 9.0592 g The mass of water…

Q: How many moles of iron is present in a 2.53-g sample of an oxide of iron that is 27.64% O by mass?…

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Q: A compound is found to contain 7.962% silicon, 20.10% chlorine, and 71.94% iodine by weight. (To…

A: Here, we have to find the empirical formula and molecular formula of the compound % of Si = 7.962  %…

Q: he compound cisplatin is a chemotherapy drug. The chemical formula of cisplatin is PtCl2(NH3)2. How…

A: In international system of units, seven basic units are present which help us to find the physical…

Q: Balance the following equation by filling the gaps with appropriate numbers. Na + NANO3 Na20 N2

A: Given here an unbalanced chemical reaction and we are asked to balance the reaction.

Q: Potassium dichromate, K2Cr2O7, is used in tanning leather, decorating porcelain, and waterproofing…

A: Given: Mass of K2Cr2O7 = 43.06 g.

Q: Aluminum has a density of 2.70 g/cm3 and molar mass of 26.98 g/mol. Its atomic radius is 143 x 10 –…

A: Answer:

Q: 3. Lithium has two stable isotopes with masses of 6.01512 u and 7.01600 u. The average molar mass of…

A: Answer is explained below.

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

A: Given, Diamond is one form of an elemental carbon and an engagementring contains a diamond weighing…

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

A: The mass of 1.0 g is equal to 1000 mg. The mass of diamond in g is calculated as shown below.

Q: Madagascar is one of the most important gem-producing countries. three tonnes of Madagascar rock…

A: In order to solve this question, we will be using basic mole concepts. Also, since you have asked…

Q: Arsenic is a natural semi-metallic chemical that is found all over the world in groundwater.…

A: A question based on mole concept that is to be accomplished.

Q: What is the mass of one atom of I? O 4.745 x 10-22 g O 3.443 x 10-22 g O 6.641x 10-23 g O 2.107 x…

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Q: What is the mass of 4.63 x 1012 atoms of Fe? O 2.73 x 10-10 g O 4.29 x 10-10 g O 9.76x 10-10 g O…

A:

Q: The molecule TFM is used as a lampricide to control the sea lamprey population in the Great Lakes.…

A:

Q: b. Mass of I- in the sample. O 0.1438 g O 0.1722 g O 0.1623 g O 0.1939 g O 0.1840 g

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Q: oxygen atoms

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

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Q: Which of the following statements is/are TRUE regarding paracetamol, C8H9NO2? Select one or more:…

A:

Q: In hydrogen oxide (H20), the exact value of the % composition of the Hydrogen (H) is ________.…

A: Mass % of an element:

Q: A brass alloy contains 78.6% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A:

Q: 4. An element “X* has five major isotopes, which are listed below along with their abundances. What…

A: We are having an element X having five isotope along with their abundance and mass . We have to…

Q: Part 5-Calculating the molar mass (10 points)- You will need the periodic table for this part of the…

A: 1 mole of substance = 6.022 x 1023 unit (It may be atom or particle or ion).

Q: A common ingredient in homemade laundry detergents is Washing soda, you were asked to do an analysis…

A: Given: Percentage of C=4.20% Percentage of H=7.05%

Q: The true value of a compound’s molar mass is 176.082 g/mol. You do an experiment and determine the…

A: True value of molar mass = 176.082 g/mol Experimental value of molar mass = 177.85 g/mol. % error =…

Q: A compound is found to contain 63.65 % nitrogen and 36.35 % oxygen by mass.   NO4   N2O   N2O4…

A: empirical formula of a chemical compound is the simplest whole number ratio of atoms present in a…

Q: 7. A 0.45 g sample of aspirin is decomposed into its and found to contain 0.27 g C, 0.020 g H, and…

A:

Q: 2. For, 4 Cu;N (s) + 3 02 (g) → 6 Cu,O (s) + 2 N2 (g) (a) Find the mass of Cu,O formed by using 6.0…

A: In a chemical reaction, reactants are reacted to form the products.   Each reaction is characterised…

Q: Balance the following equation:   _____ Nm2Bf3 (aq) + _____ Cv (s) à ______ Cv2Bf (aq) + _____ Nm…

A:

Q: How many hydrogen atoms are in 1.0 G sample of acetic acid, CH3COOH? The molar mass of acetic acid…

A: Mass= 1gm Molar mass=60g/mol

Q: A new dye has been developed for coloring fabrics. The dye has percent composition of 75.91% carbon,…

A: The given percentage of each element in the dye is as follows: C = 75.91% H = 6.38 % N = 17.71 %…

Q: B. Molecules 1. C;H10 = 2. Oxygen molecule, 0, = 3. Н,О- 4. IFs= 5. SiO;=

A:

Q: A sulfide of iron is produced when 2.33 g of iron reacts with 1.926 g of sulfur. What is the…

A: Empirical formula of a compound represents the simplest whole number ratio of the moles of the…

Q: Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A…

A: Given data is: Length of plate = 15.0 cm Width of the plate = 12.5 cm Thickness of plate = 3.00 mm…

Q: Which of the following contains the MOST atoms? You shouldn't need to do a calculation here. A. 10.0…

A: Generally the no. of atoms present in some sample is obtained by dividing the sample weight by the…

Q: An acid, HEl, is formed from a hypothetical element, El, and a subsequent aqueous solution is…

A:

Q: A certain organic compound has the formula C9H11O3. A sample of this compound weighs 3.4 grams.…

A: The formula of the organic compound is C9H11O3. The molecular mass of the organic compound=9 x 12 +…

Q: A sample of Ni(CO)4, a toxic transition-metal complex, has 5.23 x 1024 atoms of carbon. How many…

A: One mole of any substance contains 6.022 ×1023 atoms.  this is called as avogadro's number.

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

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Q: What is the mass of 4.63 x 1012 atoms of Fe? O 8.96 x 10-10 g O 4.29 x 10-10 g O 2.73x 10-10g O 1.62…

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Q: How many moles are there in each sample? 55.0 g Ti 16.9 mg Na 7.95 x 10^24 Ne atoms

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Find the number of P atoms in 0.200 g of P4. (P=30.97) 3.89 x 1021 O 9.70 x 1026 6.02 x 1023 1.12 х…

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Q: 2 Li + Br2 → 2 LİBR 1. How many lithium (Li) atoms are on the reactant side of the equation? А. 1 В.…

A: 2Li + Br2 --> 2LiBr This reaction is an example of addition reaction. Lithium atom combine with…

Q: An antacid tablet weighing 0.928 g contained calcium carbonate as the active ingredient, in addition…

A: Since you have posted multiple un-related questions, we are entitled to answer the first only.