Part 12A: Calculate the molar mass of the compound vanadium (III) hydroxide, V(OH)_(3) M(V)=50.94(g)/(mol),M(H)=1.01(g)/(mol),M(O)=16.00(g)/(mol)
5. What is the percent composition by mass of nitrogen (N) in ammonium nitrate (NH4NO3)
What does 12.011 represent? element name atomic number atomic mass chemical symbol
13. Base your answer to the following question on the balanced equation below. 2Na(s)+Cl_(2)arrow 2NaCl(s) Explain, in terms of electrons, why the bonding in NaCl is ionic.
1. The pressure of a 6.02 mol sample of F_(2) in a 90.729 L container is measured to be 7.06 atm. What is the temperature of this gas in kelvins?
When the following equation is balanced with simplest whole numbers what is the coefficient for O_(2) C_(2)H_(5)OH+O_(2)arrow CO_(2)+H_(2)O 1 2 3 4 5 6 7 s 9
10. How many electrons does the calcium ion to the right have?The atomic number of calcium is 20. 11. How many hydrogen atoms are in H_(2)O 12. How many oxygen atoms are in glucose C_(6)H_(12)O_(6) 13. How many carbon atoms are in 3CO_(2) 14. What are valence electrons, and why are they important? 15. Describe the kinetic energy of the particles in: a) Solid-
A polar molecule contains a region of positive charge and a region of negative charge no bonds. only London dispersion forces. ions.
At 25^circ C the ion -product constant of wate is K_(w)=1.0times 10^-14 In an a queous s solut ion, the hydroxide ion conce tration is [OH^-]=2.5times 10^-4M c alcula te the hy dronium ion col ncen tration [H_(3)O^+] in the solution. selec tone [H_(3)O^+]=2.5times 10^-11M [H_(3)O^+]=2.5times 10^-9M [H_(3)O^+]=4.0times 10^-10M [H_(3)O^+]=4.0times 10^-11M
B Balance the following equation and record the missing coefficients as your answer. Al_(2)(SO_(4))_(3)arrow square Al_(2)O_(3)+square SO_(3)
An element cannot be broken down by chemical means. True False
Why is vaporization classified as a phase change? It forms ash Identity changes It is reversible and involves state change It forms new compounds
Which of the following statements about a catalyst is true? A catalyst accelerates a reaction by lowering the energy of activation. A catalyst accelerates a reaction by raising the energy of activation. A catalyst accelerates a reaction by changing the amount of reactant and product at equilibrium. A catalyst accelerates a reaction by lowering the equilibrium constant.
The compound $2,4,6$ trimethylheptane has how many chiral centers? o 3 1 4
Complete the atomic orbital diagram for the ground-state electronic configuration of phosphorus. $\square $ $\square $ $\square $ $\square $ $\square $ $\square $ $\square $ $\square $ $\square $
13. Base your answer to the following question on the balanced equation below. $2Na(s)+Cl_{2}\rightarrow 2NaCl(s)$ Explain, in terms of electrons, why the bonding in NaCl is ionic.
Which of the following types of compounds can form hydrogen bonds with itself? Alcohols ethers alkenes
Mixtures can be separated by physical changes. Please select the best answer from the choices provided T F
Which among the following is a chemical change? Reactivity Melting Cutting Freezing
Part F $CH_{3}CH_{2}CHCl\\ \downarrow \\ CH_{3}$ Spell out the full name of the compound.
