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
VMariaS [17]
3 years ago
13

Please could you help me with this question

Chemistry
2 answers:
Serga [27]3 years ago
8 0
The one on the left is pure because it is made out of one single material. The one on the right is a mixture because it is made out of multiple materials
matrenka [14]3 years ago
4 0

Answer:

first one pure

second one mixture..

You might be interested in
What mass of water will change its temperature by 3.0 0C when 525 J of heat is added to it? The specific heat of water is 4.184
pav-90 [236]

Answer:

Mass of water = 41.8 g

Explanation:

Given data:

Mass of water = ?

Change in temperature = 3.0 °C

Specific heat capacity = 4.184 j/g.°C

Heat absorbed = 525 j

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 3.0°C

Now we will put the values in formula.

525 J = m × 4.184 j/g.°C  × 3.0°C

525 J = m × 12.552 j/g

m =  525 J/ 12.552 j/g

m = 41.8 g

4 0
3 years ago
Sawing a board in half is an example of a chemical change
koban [17]

Sawing a board in half is a physical change not a chemical change the board doesnt change wood or whatever material it is is still would still be wood
If it were burned it would be a chemical change but its properties stay the same atomically so thats why its not a chemical change.

4 0
3 years ago
Which best describes the geologic time scale? (choose the best answer from below)
Evgen [1.6K]

Answer: B) It presents the correct sequence of events in Earth’s history.

Explanation: edge 2021

5 0
3 years ago
From the given elements Na, P , Ca ,Br which one has highest first ionization energy , ,smallest atomic size , most metallic cha
madam [21]

Answer:

highest first ionization energy - Br

smallest atomic size - Br

most metallic character - Na

Explanation:

Ionization energy of Br is higher than P because higher zeff value

Sodium is more metallic than calcium because it is able to loose electron more readily as compared to calcium because of higher electro positivity.

Atomic radius of Br is the smallest as its atomic radius is 114, P (115), Ca (197), Na (186)

 

 

5 0
3 years ago
Where does the equilibrium point occur in a reaction system?
Ymorist [56]
Equilibrium occurs when the rate of the forward reaction is the same as the rate of the reverse reaction. This doesn't necessarily mean the concentrations or pressure are the same on both sides of the equation, only the rates are the same
8 0
3 years ago
Other questions:
  • What is the pH of a solution that contains 0.83M HCN (Ka = 4.9x10-10) and 0.64 M potassium cyanide?
    8·1 answer
  • Which of the following best describes the rate of motion of a glacier?
    7·2 answers
  • Why does the magnet disolves when is insert in hydrochloric acid
    6·1 answer
  • A 0.623 g sample of a monoprotic acid is dissolved in water and titrated with 0.260 M KOH.
    11·1 answer
  • Which are examples of science rather than pseudoscience? Check all that apply. People can get rid of hiccups by holding their br
    11·1 answer
  • For a reaction: aA → Products, [A]o -4.3 M, and the first two half-lives are 56 and 28 minutes, respectively. Calculate k (witho
    13·1 answer
  • Did the addition of salt change a physical or chemical property of water?
    12·1 answer
  • A gas initially has a volume of 300. mL at a pressure of 1.0 atm, what will the
    13·1 answer
  • Is lemon juice a asid base or neutral?<br>plzz help mee​
    5·2 answers
  • Rb2SO4 is the formula for
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!