general chemistry , please solve question 9 and 10 1) The number with the most significant zeros isA) 250000001B) 0.00002510C) 2.5100000D) 0.02500001E) 2.501 x 10-72) The correct name for HNO2 is,C) nitric acidE) hydrogen nitrateA) nitrous acidB) pernitric acidD) hyponitrous acid3) Calculate the percentage by mass of hydrogen in PICI2(NH3)2.A) 1.008B) 0.034C)1.558D) 0.672E) 2.0164) What mass in grams of hydrogen is produced by the reaction of 4.73 g of magnesium with 1.83 g of water?Mg (s) + 2H20 (1) - Mg(OH)2 (s) + H2 (g)A) 0.102B) 0.204C) 0.0485D) 0.219E) 0.01625) How many moles of Nat are present in 343 ml. of a 1.27 M solution of Na2SO4?A) 1.31B) 0.436C) 0.871D) 11.1E) 3.706) Which of the following is not part of the kinetic-molecular theory?A) Atoms are neither created nor destroyed by ordinary chemical reactions.B) The volume occupied by all of the gas molecules in a container is negligible compared to the volume of the containeC) Gases consist of molecules in continuous, random motion.D) Collisions between gas molecules do not result in the loss of energy.E) Attractive and repulsive forces between gas molecules are negligible.7) The value of AH° for the reaction below is-72 kJ.H2 (g) + Br2 (g)kJ of heat are released when 80.9 grams of HBr is formthis reaction.+ 2HBR (g)B) 0.44C) 72D) 36E) 144A) -728) Which one of the following is not a valid value for the magnetic quantum number of an electron in a 5d subshellC)3D)-1E) 0A) 1B) 29) Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar?A) Si > P > Ar > Na > MgB) Na > Mg > Si > P > ArC) Ar > P > Si > Mg > NaD) Ar > Si > P > Na > MgE) Mg > Na > P > Si > Ar10) Of the choices below, which gives the order for first ionization energies?A) Ga > Ge > Se > Br > KrB) Kr > Se > Br > Ga > GeC) Ga > Br > Ge > Kr > SeD) Kr > Br > Se > Ge > GaE) Br > Se > Ga > Kr > Ge1

As per our company guidelines we are supposed to do only 1st question if multiple questions are…

9) Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar? A) Si > P > Ar > Na > Mg B) Na > Mg > Si > P > Ar C) Ar > P > Si > Mg > Na D) Ar > Si > P > Na > Mg E) Mg > Na > P > Si > Ar 10) Of the choices below, which gives the order for first ionization energies? A) Ga > Ge > Se > Br > Kr B) Kr > Se > Br > Ga > Ge C) Ga > Br > Ge > Kr > Se D) Kr > Br > Se > Ge > Ga E) Br > Se > Ga > Kr > Ge 1.

9) Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar? A) Si > P > Ar > Na > Mg B) Na > Mg > Si > P > Ar C) Ar > P > Si > Mg > Na D) Ar > Si > P > Na > Mg E) Mg > Na > P > Si > Ar 10) Of the choices below, which gives the order for first ionization energies? A) Ga > Ge > Se > Br > Kr B) Kr > Se > Br > Ga > Ge C) Ga > Br > Ge > Kr > Se D) Kr > Br > Se > Ge > Ga E) Br > Se > Ga > Kr > Ge 1.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.19QAP

See similar textbooks

Similar questions

A mass of KHP is measured at 0.3051g and contains ______ moles. Group of answer choices
15.4a 3 please. 0.166 was incorrect.
By means of a series of equations outline a method for carrying out the ff. conversions. You may use anyreagents you wish. More than one step maybe required.
Solve for the the Dimensional Analysis (Predicted Volume of NaOH) Using the Data below:Given : Balanced Chemical Equation:NaOH (aq) + KHC8H4O4 (aq) → KNaC8H4O4 (aq) + H2O (l) Note: KHC8H4O4 = KHP Standardization of Sodium Hydroxide- Primary Standard used: 204.22 g/mol- Formula Mass of Primary Standard: Potassium hydrogen phthalate (KHC8H4O4)- % Purity of Primary Standard: 99.5% TRIALS 1 2 3 Actual weight of Std. KHP (g) 0.8026 0.8026 0.8021 Corrected weight of KHP (g) based on % purity of primary std. 0.7986g 0.7992g 0.7981g
10?
I have 2 questions regarding this example in the first underlined fraction why is NO not squared ? And the second is can you explain the second underlined green line how can I get this equation can you show me the workout for it Thank you
Calculate The density of Freon CF2Cl3 at 30 C and 0.954
Density (D) is defined as mass (m) per unit volume (V) and is expressed as d= m/v Rearrange these terms to solve for mass (m).
93.6g to ng and 93.6g to tons with the set up in the image possible show how to get the answer please
I need help to calculate this data pleasethanks a lot
Zinc ore (zinc sulfide) is treated with sulfuric acid, leaving a solution with some undissolved bits of material and releasing hydrogen sulfide gas. If 10.8 g of zinc ore is treated with 50.0 mL of sulfuric arid (density 1.153 g/mL), 65.1 g of solution and undissolved material remains. In addition, hydrogen sulfide (density 1.393 g/L) is evolved. What is the volume (in liters) of this gas?
Please answer g please In the table below, use your most important scientific instrument (your calculator) to fill in the little boxesthat are highlighted:2. Data TableIdentity of Dehydrated salt (for afterwards) ________________________________ Mass of empty dish 70.874g Mass of dish + hydrated salt 71.346g Mass of hydrated salt Mass of dish + dehydrated salt XXXXXXX a) first heating 71.194g b) second heating 71.174g Mass of dehydrated salt Mass of water lost Wt. % of water in hydrated salt Moles of dehydrated salt Moles of water driven off Empirical formula of hydrated salt a. Show the calculation for obtaining the mass of your hydrated salt used.b. Show the calculation for obtaining the mass of your dehydrated salt after the second heating.c. Show the calculation for obtaining the mass of water that was driven off (based on secondheating).d. Show the calculation for obtaining the weight percent of water that was in your hydrated…