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
butalik [34]
3 years ago
8

Which statement provides a reason why a scientific theory could change? * 1 point O scientists repeat the experiments associated

with the theory O scientists find new evidence that does not fit the theory O the theory is published in a scientific journal O the theory is over 100 years old​
Chemistry
1 answer:
BigorU [14]3 years ago
6 0

Answer:

B. Experiments test the scientists' ideas.

Explanation:

Experiments helps scientist test the ideas.

Experiment is simply an act of performing a controlled test about an idea.

Before an experiment is made, observations using senses must be deduced from the environment at first.

Observations leads to the formulation of hypothesis.

Hypothesis are more or less a scientific predictions.

Most hypothesis presents variables that can be tested.

The test of a hypothesis is an experiment.

Experiments help us makes controlled test about a scientific observation in a laboratory.

You might be interested in
Why is water able to stick to the side of the glass?
Ira Lisetskai [31]
The answer is surface tension 
8 0
3 years ago
Read 2 more answers
Ethanol (CH3CH2OH), the intoxicant in alcoholic beverages, is also used to make other organic compounds. In concentrated sulfuri
Fed [463]

Answer:

a) 88.48%

b) 0.05625 mol

Explanation:

2CH₃CH₂OH(l) → CH₃CH₂OCH₂CH₃(l) + H₂O(g)         Reaction 1

CH₃CH₂OH(l) → CH₂═CH₂(g) + H₂O(g)                        Reaction 2

a) CH₃CH₂OH = 46.0684 g/mol

   CH₃CH₂OCH₂CH₃ = 74.12 g/mol

1 mol CH₃CH₂OH ______  46.0684 g

x                            ______   50.0 g

x = 1.085 mol  CH₃CH₂OH

1 mol  CH₃CH₂OCH₂CH₃ ______  74.12 g g

y                           ______   35.9 g

y = 0.48 mol   CH₃CH₂OCH₂CH₃

100% yield _____ 0.5425 mol CH₃CH₂OCH₂CH₃

w                _____  0.48 mol CH₃CH₂OCH₂CH₃

w = 88.48%

b) Only 0.96 mol of ethanol reacted to form diethyl ether. This means that 0.125 mol of ethanol did not react. 45% of 0.125 mol reacted to form ethylene. Therefore, 0.05625 mol of ethanol reacted by the side reaction (reaction 2). Since 1 mol of ethanol leads to 1 mol of ethylene, 0.05625 mol of ethanol produces 0.05625 mol of ethylene.

4 0
3 years ago
********WORTH 25 POINTS******What are 3 examples of Chemical weathering?
Scrat [10]

Answer:

Carbonation. When you think of carbonation, think carbon

Oxidation. Oxygen causes oxidation.

Hydration. This isn't the hydration used in your body, but it's similar.

Explanation:

5 0
3 years ago
True or false? Enzymes in the digestive tract catalyze hydrolysis reactions.
Slav-nsk [51]

Answer:

The given statement is true.

Enzymes which are present in the digestive tract such as salivary amylase, pepsin, trypsin, et cetera mainly catalyze the hydrolysis reaction.

The hydrolysis reaction is the reaction by which large molecules are broken down into smaller molecules with the help of water.

Most of the complex molecules or nutrients such as starch, protein et cetera are broken down into their respective smaller units with the help of hydrolysis reaction.

For example, lactase catalyzes the hydrolysis of lactose into glucose and galactose.

5 0
3 years ago
Read 2 more answers
What happens to the length of a year for each planet as you get farther away from the sun
Bond [772]

Answer:

they get colder and darker, with less light

Explanation:

3 0
3 years ago
Other questions:
  • BRAINLIESTTT ASAP!! PLEASE HELP ME :)
    13·1 answer
  • Some soils are made mostly of loess. loess is silt-sized sediment deposited by _______.
    10·2 answers
  • What is a solute?
    5·1 answer
  • How manhhy neutrons does element x have if its atomic number is 24 and its mass number is 77??
    8·1 answer
  • What two factors determine the thermal energy in a substance
    13·1 answer
  • During meiosis, only one chromosome from each homologous is passed on to the offspring. What does this help increase?
    15·1 answer
  • When applying monomer liquid and polymer powder nail enhancements, after dipping the brush in monomer liquid and removing the ex
    10·1 answer
  • Commercial cold packs often contain solid NH4NO3 and a pouch of water. The temperature of the pack drops as the NH4NO3 dissolves
    13·1 answer
  • A hurricane is MOST LIKELY to occur in an area
    10·1 answer
  • Instructions:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!