A graduated cylinder was filled with water to the 25.0 mL mark and weighed. Its mass was 105.5g. An object made of an unknown metal was placed in the cylinder and completely submerged in the water. The water level rose to 30.7 mL. When reweighed, the cylinder, water and metal object had a total mass of 156.0g. Based on these measurement, what is the density of the unknown metal? 2.02 g/mL 5.08 g/mL 8.86 g/mL 1.64 g/mL

Q: Which process below produces FADH2? The citric acid cycle The conversion of pyruvate Oxidative…

A:

Q: Consider Na,[Co(CN)]. A coordinate covalent bond exists between: Select ong a. Со and CN 3+ o b. Na…

A:

Q: A chemist wishes to precipitate yttrium cations out of a 1.00 L solution. if the concentration of in…

A: Here we are required to find the mass of potassium iodate to precipitate yttrium iodate

Q: 20. A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 8.0 x 10 M.…

A:

Q: Choose the correct equation for the reaction of Sa0, with I. 2 S,0, (aq) +2;(aq) - 4 (ag) + S,0,…

A:

Q: Siguiticance o Ontertainky princi ple

A: According to Heisenberg uncertainty principle it is not possible to determine position and velocity…

Q: ete the following reactions by providing the missing reagent(s) or Of the major product. OH + En HBr…

A: Olefins are reactive compounds shows an addition reactions. Form the olefins we can produce the…

Q: 2NH3(g) 26. Which of the following statements is true about the I.C.E. table below for the reaction:…

A: 26.  Let 'a' be the change in concentration   Molarity(M)     3H2(g)    +    N2(g)   <----->…

Q: A nuclear power station delivers 1 GW of electricity for a year from uranium fission. Given that a…

A: Given: Power generated for a year = 1 GW 1 year = 365 x 24 x 3600 seconds So, Energy = Power x time…

Q: CH3 How many stereogenic carbons are present in the Penicillin molecule?

A: Achiral centre is the carbon to which four groups attached to carbon atom are not different.

Q: 87 1 এ dक एकयंiड Pचवट hoon प g Ths qucteor specics in tegutt.e

A: Beta particles are negatively charged particles. Beta particles are emiited in beta decay.

Q: Calculate AG and the exponent value (the x of 10) for K. for the following reactions at 25°C: (a)…

A:

Q: A binary hydride can be synthesised through the following methods EXCEPT: Select one: a. The…

A:

Q: The following Figure is the mass spectrum of pentan-3-one (CH;CH2COCH2CH3). Draw the mechanisms for…

A: To show mass fragmentation of pentan-3-one

Q: Using the vale of 300 mOsmol.L-1 for plasma answer the following questions: A 2.0 L solution…

A: Given: Osmolarity for plasma = 300 mOsmol.L-1

Q: e) none of the above 25. If K. = 0.124 for A2 + 2B 2 2AB, what is the value of K. for the reaction…

A:

Q: Н—с—с- с—н H H yze the incomplete structure and determine the number of valence electrons. v many…

A: Valence electrons are electrons of outer most shell. Oxygen atom has 6 valence electrons and C has 4…

Q: True or False. Support your answers For every process, AUsys = -AUsurr b. For every cyclic process,…

A: first law of thermodynamics

Q: Siguiticance o Unrertainky piinci ple

A: Bohr's theory considers an electron as a material particle. Its position and momentum can be…

Q: Suppose that equal volumes of 0.114 M sodium chloride (NaC) and 0.0888 M silver nitrate (AgNO) are…

A: Given: Molarity of sodium chloride = 0.114 M Molarity of silver nitrate = 0.0888 M Solubility…

Q: De Broglie Hypothesis ( Dual Nahupe of matter And Radi ohon) Ex plain weu along with defailed Ex…

A:

Q: 1.  Define the following terms used in volumetric/ titrimetric analysis       a.   Standard…

A: Since you have asked a question with multiple sub-parts, as per our company guidelines we are…

Q: Solubility of BaF2 at 20 CO = 0.161 gm / 100ml in water, calculate Ksp ? M.Wt of BaF2 = 137.34 + (2…

A:

Q: 27. What is the pH of a 0.42 M solution of sodium propionate, NAC3H5O2, at 25°C? Ko(C3H5O2 ) = 7.69…

A: M

Q: Prepare a 500.0 mL 0.5 M H2SO4 solution

A:

Q: Siguiticance ot Untertainky princi pie

A: Bohr's theory considers an electron as a material particle. Its position and momentum can be…

Q: Siguiticance o Unrertainly princi pie

A: Given question is :  What are the significant of Uncertainty principle = ?

Q: H*, OH-, and pOH of a solution with a pH of 1.79 at 25 °C. Enter numeric value [H*] = M [OH-] = M…

A:

Q: Give the formula of the conjugate base of HSO,. conjugate base: Give the formula for the conjugate…

A:

Q: 1. Assign the chemical shifts to the specific protons and carbons in this polyamide starting…

A:

Q: The water gas shift reaction is represented by the equation and enthalpy change shown below: co +…

A: i) Equilibrium limited means a stable condition in which forces cancel one another i.e. if one of…

Q: When a solution of 1.00 g of X in 100 cm3 of water was shaken with 10 cm3 of ether, 0.80 g of X was…

A: Formula used w = W KD×VKD×V+ vn  Where KD = distribution coefficient V = Volume of water = 100 cm3 =…

Q: Chemistry IDENTIFY PRODUCT A TO C Br BugSnH, AIBN A Toluene, 80 °C Ph-

A:

Q: 5.1 The normal boiling temperature of benzene is 353.24 K and the vapour pressure of liquid benzene…

A:

Q: Propose a reasonable synthetic route for the following reaction: CH, CH; HNO3 (B) ? HNO, (А)? (C) ?…

A:

Q: Q6. Starting from the indicated starting material, provide either the product(s) or the reagents…

A: Here we are required to predict the product of the reaction

Q: De Broglie Hypothesi3 ( Dual Nahuse of matter And Radi ohou) Explovin weu along with detailed…

A:

Q: 4- Lewis Acid accept an electron pair BF3 Base donates an electron pair : NH3 True False

A: In this question we have to tell that the given statement is true or false.

Q: Explain Heisenbery Uncertainby principle with dei vahion aloy fully describe in and more than word…

A:

Q: Which element does the following hybridization picture belong to? 2s 2 Px 2p, 2p2 sp unhybridized…

A: Here we have to predict the element having the following  given hybridization picture.

Q: Deviv ation f schroolinger €quation with fuep wingraw And its Applicalion wave Exploinationn and fam

A: Since, you have multiple questions so I will solved first question for you and please post…

Q: A certain weak base has a Kp of 7.30 x 10-'. What concentration of this base will produce a pH of…

A: Given data, Kb =7.30×10-7 pH =10.37 Let us consider the weak base is B. It react with water as,…

Q: The first step in the Ostwald process for producing nitric acid is         4NH3(g) + 5O2(g) →…

A:

Q: Siguiticance o Onrertainty princi ple

A: Given,  What are the significant of Uncertainty principle = ?

Q: Assuming equal concentrations, arrange these solutions by pH. Highest pH Lowest pH Answer Bank…

A: Arranging the trend of highest to lowest pH

Q: For each highlighted bond (shown in red), select the arrow that indicates the direction of bond…

A:

Q: De Broglie Hypothesis ( Dual Naruse of matter And Radi ohou) Ex plovn weu along with detailed…

A:

Q: The triple point of nitrogen occurs at a temperature of 63.1 K and a pressure of 0.127 atm. Its…

A: Given :  At triple point :  Temperature = 63.1 K  Pressure = 0.127 atm   Normal boiling point = 77.4…

Q: Question 40 Which of the following statements about sigma and pi bonds is true? O Sigma bonds are…

A: Covalent bonds are classified into sigma-bond and Pi-bond based on the type of overlapping of the…

Q: 13. Using the given data of standard molar Gibbs free energy of formation, determine ArG (kJ) at 298…

A:

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.