Practice Exercise 1Platinum, Pt, is one of the rarest of the metals. Worldwideannual production is only about 130 tons. Platinum has a densityof 21.4 g>cm3. If thieves were to steal platinum from a bank usinga small truck with a maximum payload capacity of 900 lb, howmany 1 L bars of the metal could they take?(a) 19 bars (b) 2 bars (c) 42 bars (d) 1 bar (e) 47 bars

Q: Sofia 8.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and…

A: X react with oxygen to give CO2 and H2O.  So the number of moles of carbon in CO2 and number of…

Q: Please answer part e. All information was given i belive

A: The mass of one mole of atoms of an element present in the sample is known as its molar mass. It is…

Q: Interconversion Between Mole and Molar Mass Mass Unit in gram → Counting Unit in mol NaCI 1:1 46g :…

A: Molar mass is mass of atom in one mole compound.

Q: Question 12 of 15 A mixture contains (0.40 g SO,, 20 % (Wt/WT) NACI) and unknown amount of NH,C when…

A: Here a mixture contains 0.4 g SiO2 and 20% (w/w) NaCl and unknown amount of NH4Cl . On heating mass…

Q: Discussion:: 1- Comparisons are often made between the sulfur and nitrogen content of oil and their…

A: This is due to diagonal relationship between sulphur and nitrogen. diagonal relationshipA diagonal…

Q: If you want to balance the following equation: XH3PO4 (aq) + yCa (OH)2 (aq) + ? w Ca3 (PO4)2 (s) + z…

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Q: .) Refer to the following equation: 3Cu(s) + 8HNO3(aq) → 3Cu(NO;);(s) + 2NO(g) + 4H,0(1)

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Q: CHEMICAL FLAME COLOR OBSERVATIONS NAME & FORMULA Calcium, Ca orange Lithium Li pink Sodium, Na…

A: Unknown - Lithium Li+

Q: The question is the following: when diamond a pure form of carbon is burned in an oxygen atmosphere,…

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Q: I Review Consta A Freon leak in the air-conditioning system of a large building releases 12 kg of…

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Q: What mass of carbon dioxide is produced from the complete combustion of 5.90×10-3 g of methane?…

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Q: Sofia 1.00 completely in excess oxygen, and the mass of the products carefully measured: of a…

A: Given:Mass of compound X=1.00 gMolecular molar mass=44.0 g/molMass of carbondioxide=3.00 gMass of…

Q: Learning Task 3: Calculate the percent mass of each element of a compound NaHSO3 (Na = 23.0 g/mol; H…

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Q: Hey student placed 1 tablespoon of sodium hydrogen carbonate (NaHCO3) into a 150 – milliliter beaker…

A: Given:- A student placed 1 tablespoon of sodium hydrogen carbonate (NaHCO3) into a 150 – milliliter…

Q: Learning Task 3: Calculate the percent mass of each element of a compound NaHSO3 (Na = 23.0 g/mol; H…

A: Mass percentage is calculated by dividing the mass of a component with total mass of the mixture,…

Q: Unknown A Unknown B MASS SPECTRUM 100 MASS SPECTRUM 100 80- 80 - 0- 60 40- 40 20- 20 0.0- 0.0 40 80…

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Q: Example 60 mice, each weighing 2 kg, were used in a lethal dose (LD50) experiment. The number of…

A: Answer..

Q: Background Size A A A NaNO, + PbO > Pb(NO3)2 Na,0 +.

A: Since you have asked multiparts, we will solve the first three subparts for you. If you want any…

Q: Calculate the mass percentage of oxygen in a mixture that contains 159 grams of potassium…

A: First determine the mass of oxygen atoms in the given compound and then determine mass percentage of…

Q: View Policies Current Attempt in Progress A lawn fertilizer is rated as 7.82% nitrogen, meaning 7.82…

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Q: Practice Exercise 2The density of the organic compound benzene is 0.879 g/mL.Calculate the mass in…

A: Given information,    Density of benzene is 0.879 g/mL.    Volume of benzene is 1.00 quart

Q: QUESTION 15 How many atoms of sulfur are in 499 g of Na₂S₂O3 ? Atomic weights: Na=22.99, S-32.07,…

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Q: 28. What is the coefficient of H₂O when the following equation is properly balanced with smallest…

A: A balanced chemical equation is the one that contains the same count of different types of atoms on…

Q: Data Table A) Mass of crucible (g) 20.442 B) Mass of magnesium and crucible (g) 20.717 C) Mass of…

A: In the theortical value of oxygen mass %, the mass of oxygen that we know from the formula of…

Q: ▶ Practice Exercise 1A 2.144-g sample of phosgene, a compound used as a chemicalwarfare agent during…

A: % composition of C in phosgene=mass of Cmass of phosgene×100…

Q: expresses following statement: “Iron can be made to react with molecular oxygen (0,) to give iron…

A: Here we have to write the balanced chemical equation , which states that iron can be made to react…

Q: P4(s) + 10C12(g) → 4PCI5(g)

A: Given equation: P4 (s) + 10Cl2 (g) → 4PCl5 (g) We have to classify this reaction.

Q: In lab you measure out 22.21 grams of C6H12O6 for an experiment. How many mol is this? Give your…

A: Molar mass of C6H12O6 = 180.16g/mol  no. of moles (n) = Mass÷molar mass

Q: 2. 5. い According to the equation: c. 24 g a. b. 12 g 5. 4NH

A: (5) Given that -  Balanced Chemical equation is -  2H2O(l)  -----> 2H2(g) + O2(g)    Also given…

Q: Data: Trial 1 Trial 2 Mass (g) Mass (g) Mass of crucible, cover, and magnesium (before heating)…

A: Trial 1 : Given : Mass of Magnesium = 0.2437 g  and mass of oxygen = 0.1610 g

Q: PRACTICE 2-3 What mass of sodium chloride and what volume of water are needed to prepare 5.00 x 10…

A: Given information,     Volume of solution = 5.00 × 102 mL0.89% by mass of saline solution

Q: Balance the following and list the coefficients in order from left to right. ___ Cr + ___ H 2SO 4 →…

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Q: Considering the chemical equation below: 4 C3H5BR3 + 17 02 12 CO2 + 10 H20 + 6 Br2 What is the…

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Q: 2.The only empirical formula is: Group of answer choices A, C6H14 b, C2H4 c, C8H16 d, 1. C7H19

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Q: uestion. Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For…

A: Given is ,   Table for log and ln.

Q: Calculate the number of atoms of hydrogen (H) in 394 cm³ of the colorless gas butane at 25 °C and…

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Q: 8. What is the theoretical number of e- in n=5 E level?

A: Total no of electron in a particular sell = n2 . Where n is the principle quantum no .

Q: calculate the number of moles of C₂H6 in 4.86 x 1023 Molecules of C₂H6. GIVE EXPLAINED HANDWRITTEN…

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Q: Complete the following equation by filling in the blank. 24696Cm + 126C → ____ + 4 10n

A: A question based on nuclear reactions, which is to be accomplished.

Q: Which sample contains the greatest number of atoms? (No calculations necessary). Group of answer…

A: We know that, 1 mol will always contain a Avogadro's number of atoms.   Number of moles = mass/molar…

Q: The mass of 1 mol of 13C (carbon-13) is 13.003 g. A) What is the mass in u of one 13C atom? in u…

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Q: For the reaction 4AB = 2A2+ 4B, Kc =6.90.11 5 Therefore Kc for the A2+ 2B= 2AB IS (äbäi 1) 0.381…

A: For the given reaction 1, the expression of Kc will be  Kc1 = [A2 ]2 X [B]4 / [AB]4 = 6.90 where [A2…

Q: 3.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Given:Mass of CO2 = 6.70 g.Mass of H2O = 4.11 g.Molar mass of CO2 = 44 g/mol.Molar mass of H2O = 18…

Q: It's 32°F (0°C) outside under normal atmospheric conditions (1 atm) at a stunt performer's birthday…

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Q: Lab Questions 1. Calculate the mass percentage of water in the hydrate. Show the calculations.…

A: here you added five questions at a time we are solving the first three questions only if you want…

Q: Question 14 3 Points How many atoms of sulfur are in 410 g of Na:S:Os ? Atomic weights: Na=22.99,…

A: We have given a compound formed by sodium, sulfur, and oxygen Na2S2O3 For finding the molar mass we…

Q: What volume of H2O, weighed in air against brass weights, would have to be placed in a flask at…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: Data Table A) Mass of crucible (g) 20.442 B) Mass of magnesium and crucible (g) 20.717 C) Mass of…

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Q: PRACTICE 2-5 Determine the mass of sodium sulfate (in grams) dissolved in 2.0 L sodium sulfate…

A: Given data- The volume of the sodium sulfate solution = 2.00 L Molarity of the sodium sulfate…

Q: QUESTION 15 How many atoms of sulfur are in 499 g of Na,S,O, ? Atomic weights: Na=22.99, S=32.07,…

A: Mass of Na2S2O3  =  499 g    Molar mass of Na2S2O3,        = 2 × MM of Na + 2 × MM of S + 3 × MM of…

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.