A student used two scales to measure the length of a nail and recorded the following measurements: Scale A 2.25 cm Scale B 2.2533 cm Select the correct statement from the following: The Scale A measurement is less precise. The Scale A measurement is less accurate. The Scale A measurement is less precise but more accurate. The Scale A measurement is more precise but less accurate. O O O O

Q: Post Lab Questions: 1. Determine the formal charge on each of the atoms in SO2 (make sure to label…

A:

Q: A. Oxidant B. Electrode discharge lamp C. Detector D. Discrete atomizer E. Nebulizer atomizer F.…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: current

A:

Q: Using the following electrode potentials, determine the redox potential for the oxidation of nitrite…

A:

Q: Instructions: Backup your claims with scientific laws, postulates or theories. Answer in 3-5…

A: We have an ear-popping sensation in our ears as we drive up on mountain. Here the concept involve is…

Q: For the reaction 2NO(g) + 2H2(g)N2(g) + 2H2O(l) H° = -752.2 kJ and S° = -351.6 J/K The standard…

A: Given reaction is :  2NO (g) + 2H2 (g) ---------> N2 (g) + 2H2O (l) Standard change in enthalpy =…

Q: The compound ammonium cyanide is a strong electrolyte. Write the reaction when solid ammonium…

A:

Q: 6. Arrange the following atoms in order of decreasing size-la atoms are in their ground states.) a.…

A:

Q: What is the most proper name of this compound? ...CH CH3 O (S)-1,2-epoxy-2-methylpentane…

A:

Q: At high temperatures, dinitrogen tetroxide gas decomposes to nitrogen dioxide gas. At 500 °C, a…

A:

Q: According to the following unbalanced reaction, if the rate of appearance of oxygen gas is 4.00 x…

A: Given: Rate of appearance of oxygen gas = 4.00 x 10-2 M/s

Q: When 2.0 g NaOH were dissolved in 53.0 g water in a calorimeter at 24.0 °C, the temperature of the…

A: Given data :

Q: What is the concentration in %m/v of a 0.607 M aqueous solution of dimethyl ether (MM = 46.07…

A: In multiple questions, we solve only first questio according to the Bartleby guideline. Find out…

Q: Part C Consider the following reaction: CO (g) + 2H2 (g) K, = 2.26 x 104 at 25 °C. Calculate AGrxn…

A:

Q: 3..Name the IUPAC for the following compound.

A:

Q: 6. Calculate AH and AS for the reversible vaporization of 50.0 g of ethanol at 1.0 atm. The molar…

A:

Q: A mother liquor of a NaCl solution having a concentration of 5.00 M is taken two milliliters (2.00…

A: A 2.0 mL aliquot of 5.0 M NaC solution is taken out and diluted to a volume of 10.00 mL. We are…

Q: What will be the pH in the titration of 0.01 L of 200 millimolars H2CO3 by 100 millimolars of sodium…

A:

Q: 'N' CH3

A:

Q: Sn2+ can be analysed by reaction with excess Fe3+ and the Fe2+ produced is oxidised back to Fe3+…

A: Here we are required to find the moles of Sn2+ present which was analysed  by redox titration using…

Q: 2. In both instances below, order the acids by increasing pKa a) Al(OH)3 b) H2S H3ASO4 HCIO3 H3PO4…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: There are two main types of gravimetric analysis. Volatilization methods are based on isolation and…

A: The given statement is false. Volatilization gravimetry involves separating components of our…

Q: 7. Iron, a large component of steel, is obtained by reducing iron (II) oxide (present in hematite…

A:

Q: At a given temperature, for which of these gases: H2(g); O2(g) is: a) the average speed less? b) the…

A: Given, H2 and O2 gas

Q: Calculate AG° for this reaction at 298 K. Express your answer using four significant figures. ?…

A:

Q: Consider the following system at equilibrium where K. 9.52x10 2 and AH° = 18.8 kJ/mol at 350 K. CH4…

A:

Q: Q2:. (a) For a free electron with a velocity of lo' cm/s, what is its de Broglie wavelength. (b) In…

A: formula for this, de-broglie wavelength = plank const/(mass of electron*velocity)

Q: On the basis of ionic charge and ionic radii given in Table 1, predict crystal structures for the…

A: A molecule will be stable molecule if it contains atom such that total charge on the molecule is…

Q: How does DIY cold pack works?

A: DIY cold pack

Q: Does a reaction occur when aqueous solutions of sodium nitrate and potassium hydroxide are combined?…

A: Reaction occurs between sodium nitrate and potassium hydroxide. Yes.

Q: Answer whether it is true and false. Please provide the explanation. Thank you Ma'am/Sir! 1. The…

A:

Q: What is the boiling point of a solution made by dissolving 12.34 g of Calcium Chloride, in 123.4 mL…

A: Answer: When a non-volatile solution is added in a solvent it causes an elevation in the boiling…

Q: Part A Estimate the value of the equilibrium constant at 520 K for each of the following reactions.…

A:

Q: 4NH3(g) + 502(g) → 4NO(g) + 6H2O(g) AH = -906 kJ What is AH for the reaction: NO(g) + 3/2H20(g)…

A:

Q: and/or strct ures provide a short answer for rationalizing why the alconol shown is not the major…

A: ->Major product formed through rearrangement in carbocation and proceeds through most stable…

Q: The Fe2+ (55.845 g/mol) content of a 2.475 g steel sample dissolved in 50.00 mL of an acidic…

A:

Q: Calculate the Rf value of a spot if it travelled 1.5 cm while the solvent travelled 2.5 cm. Express…

A: Given :  1. Spot distance = 1.5 cm  2. Solvent distance = 2.5 cm

Q: A 50.00 mL of 0.0275 M HCl solution was titrated with 0.1500 M NaOH. Calculate the pH of the analyte…

A: Given,  Molarity of HCl = 0.0275 M  Volume of HCl in mL = 50.00 mL  Molarity of NaOH = 0.1500 M…

Q: 6. A double displacement reaction takes place between two ionic compounds that are dissolved in an…

A:

Q: What type of tertiary interaction do we observe for the two amino acid residues in the box? Draw the…

A: There are 4 types of protein structure-  1- primary structure 2- secondary structure 3- tertiary…

Q: Write the chemical reaction for the incongruent dissolution of spodumene.

A:

Q: One milliliter of sodium hydroxide reacts with 40.84mg KHP (KHC8H4O4). What is the molar…

A: Molarity (M) :-  The number of moles of solute dissolved in one litre of solution is known as…

Q: When sodium oxalate reacts in solution with lanthanum (III) chloride, lanthanum (III) oxalate is…

A: This is the question of stoichiometric calculation

Q: What is the unit of the answer

A: The volume of KH2PO4 is 285.64 ml

Q: Write the formula for Calcite. Type of Bonding: Show Lewis Structure or Bonding in the solution…

A: Calcite is a mineral and is a polymorph of calcium carbonate. Out of the other polymorphs of calcium…

Q: 35. What is the amount of heat required to raise the temperature of 200.0 g of aluminum by 10°C?…

A:

Q: draw the major product of the following reaction. 3. p-tert-Butylisopropylbenzene + HCrO, Acetone

A: ->H2CrO4 is oxidizing agent which can oxidize the alkyl group  attached to benzene to carboxylic…

Q: A standing wave has wavenumber 163 rad/m. What is the distance between two adjacent nodes?

A: Standing wave is the combination of two waves moving in opposite directions. Each wave having the…

Q: compounds. Then, a major shift happened. How did chemists increase the rate of discovery of the…

A: Antoine Lavoisier first one who tried to group the elements as metals and nonmetals. Then Wolfang…

Q: COM. 70°C COMe [2+2], E) light F) (Retro Diels-Alder)

A: We have to draw the major product of the given cycloaddition reactions.

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.