Other Chemistry Answers

Determine the pH of a 0.020 M HNO₃ 

6. Nitrous oxide, NO, is sometimes used in dentistry. It is produced when

ammonium nitrate(NH,NOg) decomposes in the reaction below.

(NHANO3) - N20 + 2H20

a. How many moles of NH,NO; are required to produce 5.6 moles of Ng0?

b. How many grams of NO is that?

5. How many moles of CO, (carbon dioxide) are produced when 5.5 moles of Oz

(oxygen) is used in the reaction below?

26gH18 + 2502 - 16CO2+ 18H20

B. How many grams of oxygen is that?

4. How many moles of Feliron)are produced with 3.45 moles of Mg(magnesium)?

3Mg + FezO - 2Fe + 3MgO

b. How many grams of Mg is that?

2. How many moles of Na2O (sodium oxide) are produced if 1.5 mol of Fe(iron) is

produced in the following reaction:

6Na + Fe2O3 - 3Na,O + 2Fe

3. If 4.3 moles of CaC2 (calcium carbonide) are used up in the reaction below, how

many grams of HO(water) are needed?

CaC2 + H20 - CaH2 +Ca(OH)?

1. Hydrogen gas can be produced through the following reaction

Mg + 2HCI - MgCl2 + H,

a. How many grams of HC|(hydrochloric acid) are used by the reaction of 3.50

moles of Mg (magnesium)?

1.     Determine the pH of a buffer prepared by adding 15 mL of 0.25 M acetic acid to 35 mL of 0.17 M sodium acetate. Given Ka for acetic acid = 1.7 x 10^-5.

How many moles of carbon dioxide will be produced by the complete reaction of 2.0 mole of glucose (C6 H12 O6)

A certain ion X3+ contains 24 electrons and 32 neutrons. The chemical symbol and the mass number of this ion are:

Consider the reaction Cd (s) + 2AgNO3 (aq) → 2Ag (s) + Cd(NO3

)2 (aq)

a. Rewrite the equation to show the dissociated ions. This is called the dissociation equation. Include

states. (1)

b. Identify the spectator ion. (1)

c. Write the balanced net ionic equation. Include states. (1)

d. Which entity is oxidized? (1)

e. Which entity is reduced? (1)

f. Which entity is the oxidizing agent? (1)

g. Which entity is the reducing agent? (1)

h. Write the balanced oxidation half-reaction. (1)

i. Write the balanced reduction half-reaction. (1)