What is the mass of 3.90 x 1021 formula units of KBr? Answer in standard notation to three significant figures.

Q: How many molecules of sulfuric acid are in 5.00 g of sulfuric acid? Write your answer with the…

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Q: The mass in milligrams of oxygen (molar mass= 16 g/mol) in 1920 cm³ of 1.76X10-3 M solution of…

A: Given: Volume of H2Cr2O7 =1920 cm3 Molarity of H2Cr2O7=1.76×10-3M  To find: Mass of oxygen

Q: What is the molar mass of the compound Carbon dioxide?   You are expected to know the formula for…

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Q: mass

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Q: The mass of 4.375 x 1016 molecules of compound with the molecular formula C3H9N is ______ g. Report…

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Q: What is the maximum mass of pure lead that could be extracted from 135. g of galena, a lead ore with…

A: Given that : Mass of Galena (PbS) = 135 g The molar mass of PbS is 239.3 g/mol We have to calculate…

Q: 2H*(aq) + Sn(s)–H2(g) + Sn²*(aq) ificant figures during intermediate calculations to avoid round off…

A: The cell reaction is: Sn + 2H+   ----->  Sn2+   +  H2 We have : E°cell = E°H+/H2   -   E°Sn2+/Sn…

Q: What is the maximum mass of pure lead that could be extracted from 195. g of galena, a lead ore with…

A: Formula of galena = PbS Mass of Galena = 195.0 g Molar mass of Galena = 239.3 g/mol Mass of pure…

Q: A chemist measures the amount of fluorine gas produced during an experiment. He finds that 495. g of…

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Q: Ammonium phosphate ((NH,),PO4) is an important ingredient in many fertilizers. It can be made by…

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Q: 5.6 × 10 mol mol 0 2 kg "m 2

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Q: Determine the mass of oxygen in a 3.6-g sample of Cr2 (CO3)3. Express your answer to two significant…

A: We have to determine  the mass of oxygen in a 13.6 g sample of Cr2(CO3)3.

Q: What volume (in mL) of 0.849 M CaCl2 is required to deliver 0.31 moles of CaCl2? Report your answer…

A: Given that : Molarity of CaCl2 = 0.849 M Moles of CaCl2 = 0.31 moles Volume = ?

Q: The chemical formula for urea is: (NH,),CO Calculate the molar mass of urea. Round your answer to 2…

A: Molar mass of a compund is defined as a mass of a sample of a that compund divided by the amount of…

Q: 5. Calculate molar mass of Cu3(PO4)2. Report to the correct significant figures and units.

A: Atomic mass: Copper = 63.54 gm/mole Phosphorus = 30.97 gm/mole Oxygen = 16 gm/mole One formula unit…

Q: Ammonium phosphate ((NH,), PO4) is an important ingredient in many solid fertilizers. It can be made…

A: Given: Moles of (NH4)3PO4 produced = 1.80 mol.

Q: What is the maximum mass of pure silver that could be extracted from 180. g of argentite, a silver…

A: Given: Mass of Argentite (Ag2S) = 180.0 g Molar mass of Argentite (Ag2S) = 247.80 g/mol Molar mass…

Q: How many moles of KClKCl are contained in each of the following?

A: The number of moles of KCl(n) can be calculated using molarity (M) and volume (V) by using the…

Q: The chemical formula for diethyl amine is: (CH,CH,),NH Calculate the molar mass of diethyl amine.…

A: To calculate the molar mass of diethylamine.

Q: How many moles of S are in 23.8 g of C6H10S? Express the number of moles to three significant…

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Q: What is the mass, in grams, of 7.940 x 1023 molecules of zinc acetate? Enter your answer with at…

A: Given number of molecules of zinc acetate=7.940×1023 Chemical formula of zinc acetate, ZnC4H6O4…

Q: e mass,

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Q: y milliliters o

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Q: What is the mass in grams of 9.35 x 1024 molecules of CO2 ? Please express in decimal form, not…

A: Given- Molecules of CO2 = 9.35 x 1024 To find - Mass of CO2 in grams

Q: What is the mass in grams of 9.25 x 10^24 molecules of CO2? Write the answer in decimal form.

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Q: 3) 0.706 g

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Q: How many moles of Ca are there in 913 grams? Answer in decimal notation, without units, to 3…

A: • The values provided in the question are:-    i) Mass of Calcium = 913 g  ii) Molar mass of…

Q: Determine the number of moles in 247.6g of Cl2? Round to 2 decimal places.

A: Given: Mass of Cl2 =247.6 g The molar mass of Cl2 =70.906 g/mol Number of moles=?

Q: How many molecules are in 2.50 moles of CO2? (please provide your answer with units, in scientific…

A: Given:         No of moles of CO2 =2.50  we know that,      No of molecules in 1 mole of substance…

Q: Calculating molárity ušing sóluté mcles A chemist prepares a solution of potassium permanganate…

A: Given : moles of KMnO4 = 15.2 micromol And volume of solution = 350 mL

Q: How many mL of liquid mercury with a density of 13.6g/mL must you dispense to have 1.56 x 10-3 mol

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Q: Ammonium phosphate ((NH,) PO,) is an important ingredient in many solid fertilizers. It can be made…

A: Consider the given information is as follows; Moles of ammonium phosphate NH4PO4 = 0.900 mol…

Q: Ammonium phosphate ((NH,), PO is an important ingredient in many fertilizers. It can be made by…

A: Phosphoric acid reacts with ammonia to form ammonium phosphate. The equation for the balanced…

Q: A chemist prepares a solution of zinc nitrate (Zn(NO3),) by measuring out 40.7 umol of zinc nitrate…

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Q: Convert the following measurement. kg 4 5.4 x 10 g mol · L mol · dL

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Q: A major component of gasoline is octane (C,H18). When liquid octane is burned in air it reacts with…

A: Given that, No. Of moles of CO2 formed = 0.095 moles

Q: If you have 152 g of glucose (C₆H₁₂O₆), how many moles are present? Use the correct number of…

A: Given: Mass of glucose (C₆H₁₂O₆) = 152 g Molar mass of glucose = 180.156 g/mol

Q: What is the mass of 3.5 x 10^-3 molecules of copper (II) carbonate? Use correct significant figures…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Convert the following measurement. kg 2 4.7 × 10 g mol · L mol · dL

A: Since, 1 kg = 1000 g  kg = kilograms and g = gram  1 g = (1/1000) kg 1 g = 0.001 kg And, 1 L = 10 dL…

Q: A student determined that his/her sample was 45.25% Cl-. If his/her original unknown sample weighed…

A: Mass(%) = (Mass of sample)*100/(Total Mass)

Q: how many grams of KMnO4correspond to 3.13 x 1022 formula units of KMnO4? Avogrado's number is 6.02 x…

A: Given,Formula units of KMnO4 = 3.13 × 1022Avogadro’s number = 6.02 × 1023Moles in 3.13 x 1022…

Q: CHEMICAL REACTIONS Calculating and using the molar mass of diatomic elements A chemist measures the…

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Q: What is the maximum mass of pure titanium that could be extracted from 3.0 kg of ilmenite, a…

A: The molecular formula of ilmenite is = FeTiO3 The mass of ilmenite is = 3.0 kg The mass of titanium…

Q: 378 g f) 3.8 x 10 mol x 0.0670 mol h) (2.3 x 10 m) (4.567 x 10 m)= 2.3x100m 230m

A: Here some values are given, we have to find the final answer of this given question. For…

Q: Convert the following measurement. kg 3 1.6 x 10° g x10 mol · L mol · dL

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Q: How many moles are in every conversion factor? It depends on the element. 23. 02 x 10ô 01 0 6.02 x…

A: It depends on the element. Number of moles depends on the given amount and molar mass of the…

Q: A major component of gasoline is octane (C,H,s). When liquid octane is burned in air it reacts with…

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Q: A chemist measures the amount of oxygen gas produced during an experiment. He finds that 6.6 g of…

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Q: What is the maximum mass of pure lead that could be extracted from 55.0 g of galena, a lead ore with…

A: The mass of galena, PbS is = 55.0 g The mass of lead that could be extracted from this galena is =?

Q: How many moles are there in 1.0 g of the element Al? Your answer must contain the correct number of…

A: Moles can be expressed as the ratio of mass of the solute to the molar/atomic mass of solute. i.e.…

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.