Question 4- Calculate the following and express your answer in standard notation with the correct units and number of significant figures. (please show all of your work so I can understand going forward) (8.49 × 102 ??) + (3.8 × 10−1 ??) + 9,320 ??

Q: When you perform the following operations, how many significant figurės should your answer have?…

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Q: 3. Solve the following problems, stating answers to the proper number of significant figures: a)…

A: Significant figures : it is also called significant digits . it is the reliable position of a digit…

Q: A chemistry student weighs out 0.0345 g of chloroacetic acid (HCH,CICO,) into a 250. mL volumetric…

A: Molarity is defined as total number of solute present in 1000 ml of solution .   For neutralisation…

Q: A chemist prepares a solution of copper(II) fluoride (CuF,) by measuring out 0.022 g of copper(II)…

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Q: What is the boiling point of water at an elevation of 1.55×104 ftft ? Express your answer with the…

A: Atmospheric pressure at sea level = 760 mm Hg For every 1000 ft increase in elevation, there is a…

Q: Be sure to answer all parts. Enter your answer in scientific notation. Carry out the following…

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Q: A laboratory procedure calls for making 390.0 mL of a 1.3 M NaNO3 solution. What mass of NaNO3 (in…

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Q: significant figures

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Q: A chemist must prepare 750. mL of 1.00 M aqueous nickel(II) chloride (NiCl₂) working solution. He'll…

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Q: A chemist must prepare 450. mL of 1.00 M aqueous barium chloride (BaCl,) working solution. She'll do…

A: Molarity of stock BaCl2 solution(M1) = 1.27 M  Molarity of final BaCl2(M2) = 1.00 M V2 = 450. mL

Q: chemistry student weighs out 0.160g of sulfurous acid H2SO3, a diprotic acid, into a 250.mL…

A: The balanced chemical equation for the reaction between H2SO3 and NaOH is: H2SO3 + 2 NaOH → Na2SO3 +…

Q: A chemist prepares a solution of potassium permanganate (KMnO,) by measuring out 10.9 g of potassium…

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Q: Express each answer with the correct significant digits, and the proper units AND write it in…

A: The expression given is .

Q: A chemist prepares a solution of zinc nitrate (Zn(NO3)2) by measuring out 41.9 mol of zinc nitrate…

A: The moles of zinc nitrate given is 41.9 mol.The volume of the solution is 150. mL.To find the…

Q: mol aqueous L A chemist must prepare 875. mL of 10.0 mM aqueous calcium sulfate (CaS0,) working…

A: On dilution, the concentration of solution decreases but the number of moles remain constant. Write…

Q: An atom of a particular element has a volume of 7.8 x 10-31 m3. What is this volume in cubic…

A: An atom is always neutral because of the equal number of electrons and protons. Electrons are…

Q: A chemist prepares a solution of copper(II) sulfate (CuSO4) by measuring out 69.2g of copper(II)…

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Q: Drag the answers that have been correctly rounded to the appropriate number of significant figures…

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Q: 2 NO(g) + Br₂(g) → 2 NOBr(g); AH = -18.2 kJ COLUMN A Kp at 25°C COLUMN B Kp at 50°C

A: Using integrated van't Hoff equation, Kp can be determined at different temperatures.

Q: A chemist prepares a solution of mercury(I) chloride Hg2Cl2 by measuring out 0.000957μmol of…

A: The concentration is approximately 3.83 x 10-9 mol/L

Q: Carry out the following calculations, making sure that your answer has the correct number of…

A: Given that, 8.69 mL ÷ (15.3 mL - 8.94 mL) We have to calculate and result should have correct…

Q: cur. How many grams of H2 will be produced? (s) +2 HCI(s) → MnCl2(aq) + H2(g) ease type in your…

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Q: Perform the following calculation to the correct number of significant figures: ( (5.01 × 10^5) ÷…

A: Rule for significant figures in case of division:  In case of division ,the answer will have same…

Q: e the mass

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Q: A chemist prepares a solution of barium chlorate (Ba(ClO,)) by measuring out 2.0 g of barium…

A: W know that Molarity = number of moles of solute / volume of the solution in L Given that Mass of…

Q: Perform the calculations below and give the results with correct significant figures. 27.8 g +…

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Q: A chemist prepares a solution of nickel(II) chloride (NICI,) by measuring out 1.2x 10 jumol of…

A: Moles of NiCl2=1.2×102 μmol Volume=250 mL

Q: A chemistry student weighs out 0.182 g of sulfurous acid (H₂SO3), a diprotic acid, into a 250. mL…

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Q: When you perform the following operations, how many significant figures should your answer have?…

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Q: Analysis of a sample showed that it contained 68.3% lead, 10.6% sulfur, and 21.1% oxygen. What is…

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Q: Calculate the volume of water (in mL) that must be added to 64.2 mL of a 5.92 mol/L NaClO3(aq)…

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Q: A solution is made by mixing 5.40 g of toluene, CHg(1), with 954. mL of chloroform, CHCI3(1).…

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Q: E with water. e concentration in g/dL of the chemist's aluminum chloride solution. Be sure your…

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Q: e the chemist has added to the flask. Be sure your answe mg x10 X 3

A: Given,           Volume of Hg2Cl2 solution= 385.0 mL = 0.385 L            Concentration of Hg2Cl2…

Q: Question 1: Determine whether the answer to each calculation has the correct number of significant…

A: (1)

Q: A chemist prepares a solution of potassium dichromate (K,Cr,O,) by measuring out 35. g of potassium…

A: Molarity of a solution represents the concentration of a solution, which is expressed as mol/L.…

Q: Do the following multiplication and division calculations. Give a final answer with the correct…

A: final answer with the correct number of significant figures and the correct units. Units can cancel…

Q: he flask to the mark with water. Calculate the concentration in mol/L of the chemist's potassium…

A: Given   A chemist prepares a solution of potassium dichromate (K2Cr2O7) by measuring out 19.4g of…

Q: A chemist prepares a solution of magnesium chloride (MgCl₂) by measuring out 47.3 mg of MgCl₂ into a…

A: Mass of MgCl2 = 47.3 mg = 47.3×10-3 g  Volume of solution = 50 mL = 50×10-3 L

Q: A chemistry student needs 35.0 g of acetone for an experiment. She has available 420. g of a 16.8%…

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Q: Are the answers written using the right number of significant figures? Explain. 1)…

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Q: A chemist prepares a solution of mercury(I) chloride Hg2Cl2 by measuring out 0.0000526μmol of…

A: Answer:

Q: How many significant figures are in 3.05481727x10^4?

A: There are certain rules for finding significant figures. 1) Digits other than zero are always…

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.