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
Levart [38]
3 years ago
11

In a reaction involving I− ,  I 2 and starch, you observe the rate at which a blue color appears over time. Which statement is t

rue?
A. You are observing the disappearance of products over time.
B. You are observing the appearance of products over time.
C. You are observing the appearance of the transition state over time.
D. You are observing the disappearance of reactants over time.
Chemistry
1 answer:
jasenka [17]3 years ago
3 0

Answer:

You are observing the appearance of products over time.

Explanation:

did the test

You might be interested in
8.<br> What behavior do all liquid<br> or plastic solids near a<br> heat source exhibit?<br> L
LuckyWell [14K]

Answer:

Explanation:

One of the properties of a liquid is that, <u>it's particles move freely (not tightly packed)</u> hence the reason for <u>it's free flowing (no definite shape)</u> when shaken in a container, unlike a solid whose <u>particles are tightly packed with restricted/no movement</u> and hence the reason for it's compactness and it's definite shape.

When a plastic solid (whose particle is tightly packed and have a restricted movement/no movement) is placed near a heat source, <u>it's particles gains energy in the process and starts to move (though slightly free) and become less tightly packed</u> hence the reason it is observed that plastic solids near a heat source melts.

From the above, it can be deduced that a liquid and a plastic solid near a heat source <u>have there particles move freely (and not tightly packed) hence making the two substances flow freely with no definite shape.</u>

7 0
3 years ago
What are 3 benefits of being a part of the microgrid?
mamaluj [8]

Answer:

1.Improves electric reliability.

2.Enhance recovery.

3.Promotes clean energy.

Explanation:

Some people suffering from the darkness still had their lights from facilities with microgrids.Power outages they can be dangerous.Microgrids keep the power flowing by disconnecting.It also generate possibly batteries then the microgrids customers are served until power is restored on the Central grid.

3 0
3 years ago
Elements are organized into groups / families according to their physical and chemical properties. Identify the elements that's
Kryger [21]

Answer:

1 valence - Alkali Metals: Li Lithium, Na Sodium, K Potassium

2 valence - Alkaline Earth Metals: Be Beryllium, Mg Magnesium, Ca Calcium

3 valence - Non-metals: B Boron, Al Aluminium

4 valence - Non-metals: C Carbon, Si Silicon

5 valence - Non-metals: N Nitrogen, P Phosphorus

6 valence - Non-metals: O Oxygen, S Sulfur, Se Selenium

7 valence - Halogens: F Fluorine, Cl Chlorine, Br Bromine

8 valence - Noble Gases: He Helium, Ne Neon, Ar Argon

3 0
3 years ago
What volume of oxygen gas is released at STP if 10.0 g of potassium chlorate is decomposed? (The molar mass of KClO3 is 122.55 g
ArbitrLikvidat [17]
<span>KCl<span>O3</span><span>(s)</span>+Δ→KCl<span>(s)</span>+<span>32</span><span>O2</span><span>(g)</span></span>

Approx. <span>3L</span> of dioxygen gas will be evolved.

Explanation:

We assume that the reaction as written proceeds quantitatively.

Moles of <span>KCl<span>O3</span><span>(s)</span></span> = <span><span>10.0⋅g</span><span>122.55⋅g⋅mo<span>l<span>−1</span></span></span></span> = <span>0.0816⋅mol</span>

And thus <span><span>32</span>×0.0816⋅mol</span> dioxygen are produced, i.e. <span>0.122⋅mol</span>.

At STP, an Ideal Gas occupies a volume of <span>22.4⋅L⋅mo<span>l<span>−1</span></span></span>.

And thus, volume of gas produced = <span>22.4⋅L⋅mo<span>l<span>−1</span></span>×0.0816⋅mol≅3L</span>

Note that this reaction would not work well without catalysis, typically <span>Mn<span>O2</span></span>.


8 0
3 years ago
Read 2 more answers
What is mean by kinetic energy​
Vinvika [58]
The energy that an object has is moving
5 0
3 years ago
Other questions:
  • What is the name for the point at which the indicator changes color in a titration?
    11·1 answer
  • Calculate the poH if 2.95 g of KOH(s) dissolved to make 100mL of solution
    7·1 answer
  • The element copper exists in nature as two isotopes: has a mass of 62.9296 u and has a mass of 64.9278 u.The average atomic mass
    11·1 answer
  • Protons are located in the nucleus of the atom. A proton has
    15·2 answers
  • How does water get treated for cities
    15·2 answers
  • Equations can be balanced by using the half-reaction method. Which step should be completed immediately after finding the oxidat
    14·2 answers
  • A Barometer reads 29.1 inches of mercury.Calculate this pressure in mmHg.
    14·1 answer
  • Next the strontium hydroxide solution prepared in part (a) is used to titrate a nitric acid solution of unknown concentration.Wr
    7·1 answer
  • The average atomic mass of potassium is 39.098 amu. This element has 3 naturally occurring isotopes K-39, K-40, and K-41. Which
    6·2 answers
  • In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!