Chemestry

1-1: Insert the chemical symbol in the answer blank for each of the following elements.

This chapter covers the basics that you may have learned in your chemistry class. The questions that follow

These values can be determined from a reaction table ('ICE' table), as shown in Table 1:

+ C6H8O7(aq) → 3CO2(g) + Na3C6H5O7(aq) + 3 H2O(l) The C6H8O7(aq) is the limiting reactant. (see calculations above) It is necessary to adjust the height of the graduated cylinder when reading the meniscus to ensure that the water pressure does not affect the pressure of the recovered gas volume being measured.

8. ISBN: 0-558-05245-2 Virtual ChemLab: General Chemistry, Student Lab Manual/Workbook, V. 2.5, Third Edition, by Brian F. Woodfield and

28) A basketball is inflated to a pressure of 1.90 atm in a 24.0°C garage. What is the pressure of the basketball outside where the temperature is -1.00°C? A) 2.08 atm B) 1.80 atm C) 1.74 atm D) 2.00 atm 29) The density of a gas is 1.43 g/L at STP. What is the gas? A) Cl2 B) O2 C) S 30) Zinc reacts with aqueous sulfuric acid to form hydrogen gas: Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g) In an experiment, 201 mL of wet H2 is collected over water at 27°C and a barometric pressure of 733 torr. The vapor pressure of water at 27°C is 26.74 torr. The partial pressure of hydrogen in this experiment is __________ atm. A) 1.00 B) 706 C) 0.929 D) 0.964 E)

c. All the formulas of the oxides formed by the alkaline earth metals and lead

7. Plan: Each student in a group of three will work to purify the product of the reaction with cis-stilbene, trans-stilbene, or styrene. The crude products will be purified through recrystallization. This purification process will be performed several times. When the recrystallization is complete, a vacuum filtration will be executed to filter out the crystals. An NMR spectrum will be taken of the recrystallized product.

Materials: 4 test tubes 1 dropper 1 test tube rack Safety goggles Sodium chloride Sodium bromide Potassium iodide Unknown substances A, B or C Hydrogen peroxide Ammonia silver nitrate Nitric acid Sodium thiosulfate Potassium permanganate Method: Please refer to SCH3U Learning Guide 6- Periodic Table “Comparison of the Behaviour of Halides” worksheet.

13. In this experiment, the pressure (P) was 1 atm, the temperature (T) was 295 K, the volume (V) was 0.150 L, and the number of moles (n)was 6.2 * 10^-3 moles.   The ideal gas law states that P*V = n*R*T.  Based on your experiment, what value do you get for R?

What are some properties of these artificial elements? - Isotopes of assorted elements that are conceived unreally in accelerator experiments are known to be precarious and radioactive. After being assembled, they begin to blight, which is them changing into a separate isotope. As the atomic number of each new heavy element developments, the half-life commonly decreases, meaning that artificial

Each element in the periodic table has a specific proton (atomic) number. Research an element which has at least two isotopes and provide the number of protons, neutrons and electrons for each isotope. (You may not choose carbon).

Using this equation and the mid-point of the buffering capacity of the acid, we will be

temperature of the solution and the pressure of the gas over the solution. At 20

Q1. Identify the general chemical and physical characteristics of gas equilibriums as a group. Explain the forward and reverse reaction mechanisms. Use nitrogen dioxide and hydrogen iodide as examples and explain how equilibrium is reached.