Other Chemistry Answers

To increasee the concentration of sugar solution which equipment is used

Balance the reactions below using the change in oxidation number method

1.     PbO₂ + HBr – PbBr₂ + O2 + H₂O

2.     KBr + KClO₂ + H₂SO₄ – Br₂ + KCl + K₂SO₄ + H₂O

Identify whether the process is oxidation or reduction. Indicate the number of electrons lost or gained per mole of the reactant

1.     C₂O₄^2-   -     CO₂

2.     CrO₄^2-    -     Cr³⁺

Identify the stronger acid between each pair and justify your answer

1.     HI and Hf

2.     HNO₃ and HNO₂

3.     HBrO₂ and HClO₂

Write the formula of the conjugate acid or base of the following substances:

1.     Acid

a.      HClO

b.     C₆H₅COOH

c.      HC₂O₄

2.     Bases

a.      F

^b.       S²

c.      HSO₃

How will the following conditions affect the equilibrium of the chemical reaction below:

4NO(g) + 6H2O(g) → 4NH3 + 5O2 ∆H = 904.4 kJ

a. adding more H2O

b. removing O2

c. increasing the temperature of the system

d. decreasing the pressure of the system

1.  Consider the given reaction.

2BrF5(g)  ⇌ Br2(g) + 5F2(g)               

If the respective equilibrium concentrations of BrF5, Br2, and F2 at 250C are 0.046M, 1.2 M, and 0.93M, what are the values of Kc and Kp?

Photosynthesis in plants convert carbon dioxide and water into glucose (C6H12O6) and oxygen according to the equation below.

6CO2(g) + 6H2O(l) —› C6H12O6(s) + 6O2(g)

How are the two types of representations (ball-and-stick and space-filling) similar?

What volume of 0.53 mol per DM cube of Potassium Hydroxide would yield 8.2 gram of potassium hydroxide in one vaporization to dryness