1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexus [3.1K]
3 years ago
12

Suppose a thin sheet of zinc containing 0.2 mol of the metal is completely converted in air to zinc oxide (zno) in one month. ho

w would you express the rate of conversion of the zinc?
Chemistry
2 answers:
hram777 [196]3 years ago
8 0
Molecular mass of  Zn = 65.38  
<span>1 mol = 65 g </span>
<span>0.2 mol of Zinc = 13.076 g of Zinc </span>

<span>13.076 g of Zinc is completely converted in air to ZnO </span><span>in one month
= 13.076 g / 30 days = 0.435 g per day 
</span>
<span>The rate of conversion of the zinc = 0.44 g / day</span>
MissTica3 years ago
7 0

Answer:

r_{Zn}=-kC_{Zn}^2C_{O_2}

Explanation:

Hello,

In this case, the mentioned reaction should be:

2Zn(s)+O_2(g)\rightarrow 2ZnO

In such a way, considering an irreversible reaction and an elemental reaction, the power of each compound's concentration equals the stoichiometric coefficient in its reaction, thus:

r_{Zn}=-kC_{Zn}^2C_{O_2}

It turns out negative since it is a consumption upon zinc.

Best regards.

You might be interested in
Which is a pure substance?<br> soda<br> gasoline<br> salt water<br> carbon dioxide
hram777 [196]

Answer: Carbon dioxide is a pure substance.

Explanation: A pure substance is defined when a substance has a single type of molecule. If more than 1 type of molecule is present in a substance, then it is considered as a mixture.

  • Soda is basically a mixture of water and carbon dioxide. More than 1 type of molecule is present.
  • Gasoline is a mixture of may gases. More than 1 type of molecule is present.
  • Salt water contains salt and water molecules, hence it is considered as a mixture.
  • Carbon dioxide has only 1 type of molecule which is CO_2 molecules. Hence, it is a pure substance.
8 0
2 years ago
Read 2 more answers
How does an electron emit light?
Semenov [28]

Answer:

by moving between defined energy levels

6 0
2 years ago
Determine the formula weight of Ca(no3)2
Zanzabum

Answer:

the formula is 164.088 g/mol

Explanation:

3 0
2 years ago
What changes in color occur when bromine reacts with an alkene​
Gala2k [10]

Answer:

Explanation: Bromine, the dark red color disappears quickly as the atoms of bromine bond with the atoms of carbon in the double bond.

7 0
3 years ago
1. What is the potential energy of a 8 kg ball that is at a height of 20 m?
weqwewe [10]

Answer:

1. 1568 J

2. 0 J

3. 1176 J

Explanation:

PE = mgh

(PE = Potential Energy) = (m = mass)(g = gravitational force which is 9.8)(h = height)

1. (3)(9.8)(20) = 1568 J

2. PE = (3)(9.8)(0) = 0 J

3. (5)(9.8)(24) =  1176 J

4 0
2 years ago
Other questions:
  • How many liters of ammonia are required to change 34.9 L of nitrogen monoxide to nitrogen gas? Assume 100% yield and that all ga
    6·1 answer
  • An exothermic reaction has a positive enthalpy (heat) of reaction.(T/F)
    6·2 answers
  • In the cathode ray tube experiment, J. J. Thomson passed an electric current through different gases inside a cathode ray tube i
    8·2 answers
  • How are whitecaps different from swells
    11·1 answer
  • Which source of energy causes most of the water evaporation on Earth’s surface?
    10·1 answer
  • Is it better for people to learn from others, or is it better for people to learn on their own? {thesis statement} {subject: Wri
    11·2 answers
  • The top is an example problem the bottom one is the one i need help with. I only need C,D, and E please help
    8·2 answers
  • C3Hs + O2 = Co2 +H20​
    14·1 answer
  • An ion of oxygen- 16 contains 8 protons and has a 2- charge. How many electrons does it have?
    8·1 answer
  • The group of elements that make up the smallest percentage of the periodic table are the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!