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Q: Ethylene glycol (MW=62.0 g/mol) is used as automobile antifreeze. Combustion analysis of a 23.46 mg…

A:

Q: What is the mass percent of bromine in lithium bromide?? 1.47.6% 2.52.4% 3.92.01% 4.7.99%…

A: Answer: option 3) 92.01 % is the mass percent of bromine in lithium bromide.

Q: A compound contains, by mass, 81.7% carbon and 18.3% hydrogen. A 0.15 mole sample of this compound…

A: Given  % Carbon  = 81.7 %  % H   =  18.3 %  Number of mole     = 0.15 mole  Mass of compound = 6.6…

Q: The number of moles in 37.80 g of C2H6O (molar mass = 46.1 g/mol) is?

A: Given information,       Mass of C2H6O is 37.80 g.     Molar mass of C2H6O is 46.1 g/mol.

Q: How many molecules are in 3.1x10^-3 g of C9H8O4?

A:

Q: The chemical formula of acetaminophen is C.H₂NO₂. Acetaminophen is a very effective drug for general…

A: a. We have to calculate the molar mass of the molecule

Q: 1. Anhydrous (doesn't contain water) sodium sulfate, Na2SO4, absorbs water vapor and is converted to…

A:

Q: How many moles of hydrogen are in 3.06x10^-3g of glycine

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Q: How many moles of formula units are present in 7.2×10^29 formula units of CaCl2?

A: Given: Numbe of formula units of CaCl2 = 7.2 x 1029

Q: The active ingredient in many antacid tablets is calcium carbonate, CaCO3. How many moles of calcium…

A: The molar mass of calcium carbonate is 100.1 g/mol.

Q: A compound contains 78.14% B and 21.86% H by mass and has a molar mass of 27.67 g/mol. What is the…

A: mass % of B = 78.14 %mass % of H = 21.86 % mass of hydrogen in 1 mole (27.67 g) of the compound = ?

Q: How many g of C4H4S2 are equivalent to 5.40 moles of this compound?

A: Answer: 627.48 g

Q: Converting Mass to Moles using Molar Mass I  A sample of chloroethane, C2H5Cl, mass of 18.5 g. What…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: Calculate the % composition by mass of each element in phosphorus oxychloride POCl3. Keep at least…

A: Mass composition explanation the amount  of each elements present in whole sample.

Q: A 3.0-mol sample of KClO3 was decomposed. How many moles of O2 are formed assuming 100% yield?…

A:

Q: A compound has the following percentage mass composition: 71.35% carbon, 12.00% hydrogen, and 16.65%…

A: Here, Mass percent of C = 71.35%. Molar mass of C =12g/mol. Mass percent of H =12%. Molar mass of H…

Q: A salt water mixture was prepared by dissolving 6.98 g of NaCl in 96.1 g of water. What is the…

A: The mass percentage of a component in a given solution is defined as the mass of the component per…

Q: How many moles of sucrose, C12H22O11, are in a 25-g sample of sucrose?

A: The atomic mass of , C = 12                                    H = 1…

Q: How many moles of H2 can be made from the complete reaction of 1.8  moles of Al? write your answer…

A:

Q: What is the correct formula of a hydrate that contains 24.5% H2O and 75.5% CaCl2, by mass percent?

A: since we know that general formula of hydrate of CaCl2  is CaCl2•xH2O where x is the number of mole…

Q: Refer to the following equation:   4NH3(g) + 7O2(g) = 4NO2(g) + 6H20(g) How many moles of ammonia…

A: Given balanced equation is-  4NH3 (g) + 7O2 (g) → 4NO2 (g) + 6H2O(g) We will first determine which…

Q: 1.) Determine the molar mass of Mn(ClO4)2. g/mol

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: H 1. CH₂MgBr 2. H3O+ 3. TsCl 4. NaBr

A:

Q: How many moles are in 2.50x10^24 molecules of potassium permanganate (KMnO4)

A: we know , 1 mole of potassium permanganate (KMnO4) contains avodrago's number of molecules.so, we…

Q: Complete the table below for calculating the molar mass of the compound phosphorus triiodide. Molar…

A:

Q: How many moles of NO(g) can be produced in the reaction of 3.00 mol NH,(g) and 4.00 mol 0,(g)?…

A:

Q: A 0.45g sample of aspirin is decomposed into its constituent elements and found to contain 0.27g C,…

A: Given: Mass of aspirin sample = 0.45 g. Mass of C produced = 0.27 g. Mass of H produced = 0.020 g…

Q: Consider a compound where it is determined that 0.88 g are equivalent to 0.00256 moles.  What is the…

A: Data given: Mass of the compound, m = 0.88 g Number of moles of the compound, n = 0.00256 moles…

Q: Penicillin N is an antibacterial agent that contains 8.92% sulfur by mass. Which value could be the…

A: Given data:

Q: A flask contains 100. mL of a 1.5 M glucose (C6H12O6) solution. The molar mass of glucose is 180…

A:

Q: how many moles are in 1.79x10^25 molecules MgCl2?

A: One mole of any molecule contains Avogadro number of molecules. Avogadro's number is 6.022×1023

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.