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
xxMikexx [17]
3 years ago
8

Which of these is an example of a physical change?

Chemistry
2 answers:
nata0808 [166]3 years ago
6 0
A, the iron didn't change it's composition
Luda [366]3 years ago
4 0
The answer is D) wood decaying
You might be interested in
Xian drew a diagram to compare deletion mutations and substitution mutations. Which label belongs in the area marked "X"? may ch
tankabanditka [31]

Answer: (B)

Explanation: Decreases the number of bases in the sequence.

3 0
3 years ago
Read 2 more answers
What is the molarity of a NaCl solution containing 9.0<br> moles of NaCl in 3.0 L of solution?
ss7ja [257]

Answer:

3 M

Explanation:

Molarity equation: M = n/v

n = moles of solute

v = liters of solution

9 moles of NaCl / 3 L

9/3 = 3 M

4 0
3 years ago
NADH is also used by cells when making certain molecules. Based on your knowledge of the role of NADH in cellular respiration, w
OLEGan [10]

Answer:

Reducing molecules.

Explanation:

NAD (Nicotinamide adenine dinucleotide) is the important molecule used by the living organisms for the generation of ATP. NADH is used almost in every biochemical cycle like glycolysis, kreb cycle and elelctron transport chain.

The NADH molecule is used as the reducing molecule in the biosynthesis of the different reaction. The NADH molecule reduces its hydrogen ions and also carry electrons for the synthesis of molecules. The NADH molecule is also used in the shuttle system as well.

Thus, the answer is reducing molecules.

6 0
3 years ago
Why are electromagnets used in metal scrap yards
Rudik [331]
Theyre temporary magnets, so they can be turned on and off.
7 0
4 years ago
Read 2 more answers
A teacher makes the following statement.
melamori03 [73]
The correct answer among the choices given is the first option.The teacher most likely is talking about distillation of a mixture. Distillation is a unit operation that separates component substances from a liquid mixture which is shown by the teacher. Also, the most common purifying technique in the production of gasoline is by this process.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Need help with question
    9·1 answer
  • What is the process by which individuals that are better adapted to their evnviroment are more likely to survive and reproduce?
    12·1 answer
  • Silicones can be oils or rubber-like materials depending on ________. Select one: A. the silicon-to-oxygen ratio B. the length o
    14·1 answer
  • The carbon atom in co2 shares _______blank electron pairs. after the reaction with h2o to form h2co3 is completed, the carbon at
    6·2 answers
  • Understand how to represent chemical reactions using an equations Question If two compounds in a chemical reaction are listed wi
    10·1 answer
  • a substance which alters the rate of a chemical reaction but is not permanently changed by the reaction is called a(n)__________
    11·1 answer
  • When two different substances are mixed together, does a chemical reaction always take place?
    6·2 answers
  • Is it worth it? In other words, will the benefits we receive from an action be worth the costs? The process of weighing these de
    13·1 answer
  • The theory of evolution states
    14·1 answer
  • A sample of water is cooled from 45°C to 35°C by the removal of 84 Joules of heat. What is
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!