answer.
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
mamaluj [8]
2 years ago
12

When hydrogen peroxide (H2O2) is added to potassium iodide (KI) solution, the hydrogen peroxide decomposes into water (H2O) and

oxygen (O2). The chemical equation for this decomposition reaction is:
2H2O2 → 2H2O + O2


In this reaction, the potassium iodide is needed for the reaction to happen, but it isn’t changed in the reaction and can be used again. What is the role of potassium iodide in this reaction?

A. Reactant

B. Product

C. Precipitate

D. Catalyst
Chemistry
1 answer:
riadik2000 [5.3K]2 years ago
5 0

Answer:

D. Catalyst

Explanation:

Because a Catalyst is a substance that causes or accelerates a chemical reaction without itself being affected.

You might be interested in
How many σ and π bonds are in this molecule? A chain of five carbon atoms. There is a double bond between the first and second c
kati45 [8]

Answer:

Sigma bonds: 10

Pi bonds: 4

Explanation:

The compound described must be CH2=CH-CO-CH≡CH. If we look at the compound closely, we will notice that there are 10 sigma bonds and 4 pi bonds.

There are three pi bonds between carbon atoms and one pi bond between a carbon and an oxygen atom (C=O). All these can easily be seen in the structure of the formula chosen in this answer.

5 0
2 years ago
Fill in the blanks with the word that best completes each statement. Scientists develop knowledge by making ------------about th
kotegsom [21]

Answer:

1. observations

2. hypothesis

3. experimentation

Explanation:

Observations are made, Hypothesies are formed from observations, and experimnets help alter and comfirm hypothesis.

3 0
2 years ago
A mass spectrometer has determined the mass and abundances of all isotopes of an unknown element. The first isotope has a mass o
shepuryov [24]

Answer:

I believe it is Potassium (K)

Explanation:

I did the math on a calculator and it was the closest atomic mass to potassium.

5 0
2 years ago
If the frequency of a radio station is 88.1 MHz (8.81 × 107 Hz), what is the wavelength of the wave used by this radio station f
Grace [21]

Hello!

If the frequency of a radio station is 88.1 MHz, the wavelength of the wave used by this radio station for its broadcast is 3.403 m

<h2>Why?</h2>

We are going to use the following equation that shows the relation of the frequency of a wave with its wavelength, knowing that radio waves are electromagnetic waves and they travel at the speed of light (299 792 458 m/s):

Wavelength=\frac{Speed_{Light}}{Frequency}= \frac{299 792 458 m/s}{8.81*10^{7} Hz}=3.402865\approx3.403 m

Have a nice day!

5 0
2 years ago
Read 2 more answers
The reaction of benzene with (CH3)3CCH2Cl in the presence of anhydrous aluminum chloride produces principally which of these?
Sedaia [141]

Answer:

See explanation and image attached

Explanation:

When the carbocation is formed by the action of AlCl3 on the (CH3)3CCH2Cl, a primary carbocation is formed. The formation of the carbonation is followed by a 1,2-alkyl shift to give a tertiary carbocation which subsequently adds to the benzene ring as shown in the image attached to this answer.

6 0
2 years ago
Other questions:
  • Write the equation for the production of one hexose sugar molecule from carbon dioxide
    5·2 answers
  • What is [h3o ] in a solution of 0.25 m ch3co2h and 0.030 m nach3co2?
    10·1 answer
  • A knife manufacturer visits your business to show his product line. He claims that the most popular material for knives is indus
    14·1 answer
  • A certain mass of carbon reacts with 23.3 g of oxygen to form carbon monoxide. ________ grams of oxygen would react with that sa
    10·2 answers
  • Question 1(Multiple Choice Worth 3 points)
    13·1 answer
  • Oxyacetylene torches produce such high temperature that they are often used to weld and cut metal. When 1.53 g of acetylene (C2H
    7·1 answer
  • Harmful chemicals released directly into the atmosphere due to either human activities or natural processes are ___ air pollutan
    7·1 answer
  • What is the composition, in atom percent, of an alloy that consists of a) 5.5 wt% Pb and b) 94.5 wt% of Sn? Assume that the atom
    12·1 answer
  • 7.47 Two atoms have the electron configurations 1s22s22p6 and 1s22s22p63s1. The first ionization energy of one is 2080 kJ/mol an
    6·1 answer
  • Identify the true statements regarding alpha-1,6 linkages in glycogen.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!