How many moles of sodium atoms are there in 4.4 grams of sodium carbonate? A. 2.5times 10^22 moles 6 & 8 & 11 C & 0 & Ns 12.01 & 16.00 & 23.00 B. 5.0times 10^22 moles C. 0.04 moles D. 0.08 moles E. 0.12 moles

Question 8 of 10 Why do metals conduct electricity? A. All covalent bonds conduct electricity. B. Metals never give up electrons. C. A lattice of ions allows valence electrons to move easily. D. The electrons in metals are inside the nuclei of the atoms.

How many moles of carbon dioxide are contained in 237 Lat STP? () mol square

Determine whether the sign of Delta E is positive or negative for each system. Drag the items into the appropriate bins. View Available Hint(s) }(l) A draft is Paglimes Bible for the Reaganic & A detail and acid chemical mixture is warmed with a hot plate. (System: reaction mixture) & Ice in a glass of water melts, cooling the water around it. (System: melting ice) Positive & & Negative

What volume does 4.53 moles of hydrogen at 1.78 atm and 301 K occupy? () L square

PCl_(5) can be produced by the reaction PCl_(3)+Cl_(2)arrow PCl_(5) What mass of PCl_(3) must be used to produce 479.525 g of PCl_(5) if the percent yield is 62.9% square

Some compounds have more than one Lewis dot structure. True False

Which of the following formula/name pairs is incorrect? BaBr_(2) barium bromide CuO copper (II) oxide MgCl_(2) magnesium dichloride Sr(OH)_(2) strontium hydroxide LiNO_(3) lithium nitrate

The reason that polar aprotic solvents work best for S_(N)2 reactions is __ they solvate cations and anions they solvate cations but not anions they solvate anions but not cations they solvate neither cations nor anions

Name each of these common acids. (a) H_(2)SO_(4)(aq) square (b) HNO_(3)(aq) square (c) HCl(aq) square

Hot Questions

A synthetic lubricant presently used with ternary blends containing HCFCs is known as __ Alkylbenezene Polyalkylene Polywannacracker Polyolester

Which of the following equations is correct? $TC=FC+VC$ $TC=FC-VC$ $TC=MC-VC$ $TC=FC\times VC$

vphich pure substance can be classified as an element? $H_{2}$ $NO_{3}$ NaCl $H_{2}SO_{4}$

What is the approximate pH at the equivalence point of a weak acid- strong base titration if 25 mL of aqueous HF requires ; 30.00 mL of 0.400 M NaOH? $K_{a}HF=6.76\times 10^{-4}$ a. 1.74 b. 5.75 c. 8.25 d. 12.26

Question 3 of 10 What property is used to calculate the pH of a solution? A. The hydrogen ion concentration in ppm B. The hydrogen ion concentration in $mg/dL$ C. The hydrogen ion concentration in $mol/L$ D. The hydrogen ion concentration in $mol/kg$

How many valence electrons are in the acetate ion $C_{2}H_{3}O_{2}^{-}$ $\square $

Which statement would be the most useful for deriving the ideal I gas law? Volume is directly proportional to the number of moles. Volume is inversely proportional to the temperature. Pressure is directly proportional to the volume. Pressure is inversely proportional to the number of moles.

Hydrogen sulfide is: A) Odorless B) Colorless C) Not flammable D) Red in color

Question 18 of 20 What is the name for $Mg_{3}N_{2}$ A. Magnesium nitride B. Magnesium dinitride C. Trimagnesium dinitride D. Dimagnesium trinitride

Give the IUPAC name for the organic compound shown: $CH_{3}-CH-CH-CH_{2}-COOH$ chloro-isopropyl alcohol 3-chloropentanoic acid 3-chloropentanone 2-chloropentanal