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
Julli [10]
3 years ago
5

How do catalysts increase the rate of a chemical reaction?

Chemistry
2 answers:
Thepotemich [5.8K]3 years ago
6 0

A] They lower the activation energy.


uranmaximum [27]3 years ago
4 0
The correct answer is A
You might be interested in
1. What is the apparatus used to measure production in plants ?
Gennadij [26K]

Answer: Auxanometer

Explanation:

An auxanometer (Gr. auxain= "to grow" + metron= "measure") is an apparatus for measuring the increase of growth in plants. Sensitive auxanometers allow measurement of growth as small as a micrometer, which allows measurement of growth in response to short-term changes in atmospheric composition.

I hope this helps!

5 0
2 years ago
Read 2 more answers
Compare rutherford's expected outcome of the gold-foil experiment with the actual outcome.
iragen [17]
Rutherford was one of the early scientists who worked on the atomic model. Before his discovery of the nucleus, the widely accepted theory was J.J Thomson's Plum Pudding Model. In this model, all the protons, electrons and neutrons are in the nucleus. But the electrons are more in number such that the electrons act as the 'pudding' and the proton and nucleus the 'plum'. This was Rutherford's hypothesis in his gold foil experiment. In order to test the Plum Pudding model, he hypothesized that when a beam of light is aimed at the atom, it would not diffract because the charges in the nucleus are well-distributed. However, his experiment disproved Thomson's model. Some light indeed passed through but a few was diffracted back to the source. He concluded that this was because there is a dense mass inside the atom called nucleus. Thus, from there on, he proposed the model that the electrons are orbiting around the nucleus.
6 0
3 years ago
8
Roman55 [17]

Answer:

305 litres of NO gas will be produced from 916 L of NO₂

Explanation:

Given the balanced equation of the chemical reaction as follows:

3 NO₂ (g) + H₂O( l) —— 2 HNO₃ (l) + NO (g)

Under standard conditions, 3 moles of No₂ will react with 1 mole of water to produce 1 mole of NO gas.

Molar volume of a gas at STP is 22.4 L

Number of moles of NO₂ gas present in 916 L = 916/22.4 = 40.893 moles of NO₂ gas

From the mole ratio of NO₂ to NO in the equation of reaction,

Number of moles of NO that will be produced = 1/3 × 40.893 moles = 13.631 moles of NO gas

Volume of 13.631 moles of NO gas = 13.631 × 22.4

Volume of NO gas produced = 305.334L

Therefore, Volume of NO gas produced from the reaction of 916 L of NO₂ with water = 305 L

5 0
2 years ago
How many molecules of O2 are required to react with 3.00 moles P4?<br> P4+5O2⟶2P2O5
likoan [24]

Answer:

1400

Explanation:

8 0
3 years ago
Read 2 more answers
Which of these is an example of a physical change? sugar dissolving in warm water iron rusting in the presence of moist air wood
WARRIOR [948]
The correct option is; SUGAR DISSOLVING IN WARM WATER.
There are two types of change in chemistry; physical and chemical changes.
A physical change is a type of change in which no new substance is formed while a chemical change is a type of change in which a new substance is formed. 
Dissolving sugar in warm water is a physical change because no new substance is formed and the sugar can easily be recovered from the water by evaporating the water.
3 0
3 years ago
Read 2 more answers
Other questions:
  • I need help with the bottom one plz and thxs
    12·1 answer
  • How to predict the product of Al+Cl2
    12·1 answer
  • Why are low sulfur fuels an advantage to the environment
    13·1 answer
  • Consider the following reaction. SO2Cl2 → SO2 + Cl2. After collecting experimental data you found that plotting ln[SO2Cl2] vs. t
    5·1 answer
  • _______ waves occur when the motion of the medium is parallel to the direction of the wave.
    11·1 answer
  • Notes:
    14·1 answer
  • Transition elements
    7·2 answers
  • If you can plz help ASAP Read the chemical equation.
    10·1 answer
  • how much potassium bromide will form a saturated solution with 100 grams of water at 40 degrees celsius
    12·1 answer
  • Groups of atoms with aligned magnetic poles are called.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!