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
bazaltina [42]
3 years ago
7

List four observations that suggest chemical change is occurring

Chemistry
1 answer:
allsm [11]3 years ago
8 0

Answer:

Examples of Chemical Changes

Burning wood.

Souring milk.

Mixing acid and base.

Digesting food.

Cooking an egg.

Heating sugar to form caramel.

Baking a cake.

Rusting of iron.

You might be interested in
Consider two different solutions of the same UV-absorbing compound. Upon UV-analysis, Solution B gave an absorbance of 1.0 and S
Juliette [100K]

We have that the Concentration of solution B is 2.5 times more than solution A's concentration.

<h3>UV(Ultra violent) rays</h3>

Question Parameters:

Upon UV-analysis, Solution B gave an absorbance of 1.0

Solution A gave an absorbance of 0. 4

Generally the equation for the Absorbance    is mathematically given as

A = e*c*L

Therefore

For A solution  

0.4 = e*[cA]*L

For B solution  

1.0 = e*[cB]*L

Hence

\frac{0.4}{ 1} = \frac{[cA]}{ cB}

[cB] = 2.5 [cA]

Therefore

Concentration of solution B is 2.5 times more than solution A's concentration.

For more information on Wave visit

brainly.com/question/3004869

7 0
3 years ago
Look at this graph:
Rufina [12.5K]
Y= Mx + b
So it’s 3/2
8 0
3 years ago
A student uses a dye to change the colour of his tee-shirt. he fills a metal bucket with water. When the bucket is heated, what
Tanya [424]

Answer:

The particles begin to vibrate faster and more.

Explanation:

Adding heat to matter increases the energy, thus creating more movement. Eventually, the bucket will melt, turning to a liquid. While it is a sold, it still has particle movement, just not enough to break volume or shape.

8 0
3 years ago
1. Long strands of DNA that contain lots of genes
sergeinik [125]

Answer: chromosome

Explanation: :)

4 0
3 years ago
Read 2 more answers
How to find hydrogen ion concentration from molarity of solution
vekshin1

The concentration of the hydrogen ions from molarity can be given with the number of hydrogen atoms in the molecular formula.

<h3>What is molarity?</h3>

Molarity is given as the moles of the solute present in a liters of solution. The compound with the number of hydrogen atoms in the molecular formula with degradation possesses the equivalent concentration of the hydrogen ions.

The compound with molecular formula AH having molarity 2, will produce 2M of hydrogen ions.

Learn more about molarity, here:

brainly.com/question/2817451

#SPJ4

7 0
2 years ago
Other questions:
  • Why is the solubility of a neutral organic compound unaltered by exposure to aqueous acid or base?
    15·1 answer
  • Is vinegar less or more dense than water
    12·2 answers
  • How many molecules are there in 45 moles of diphosphorus trioxide?​
    10·1 answer
  • Why Do Some Things Stop While Others Keep Going?
    6·2 answers
  • (7th grade science question)
    13·1 answer
  • How does the behavior of the particles determine the properties of the state of matter?​
    6·2 answers
  • How does respiration differ from cellular respiration?
    12·1 answer
  • Why do you think elements have these repeating patterns and groups of similar elements ? Explain your reasoning as much as you c
    9·1 answer
  • Convert 4.8 moles of calcium carbonate to<br> particles.
    15·1 answer
  • Consider the following reaction in the forward direction. Identify the base:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!