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
sergejj [24]
3 years ago
7

Which process represents one chemical change and one physical change

Chemistry
1 answer:
Simora [160]3 years ago
6 0
C. Decomposition is a chemical change and melting is a physical change.
You might be interested in
The temperature of 170 g of a material decreases by 20.0⁰C when it loses 3050 J of heat. What is its specific heat
qaws [65]

Answer:

0.897 J/g.⁰C

Explanation:

Given the following data:

m = 170 g (mass)

ΔT = 20.0⁰C (change in temperature)

q = 3050 J (amount of heat)

The amount of heat (q) is calculated as follows:

q = m x Cp x ΔT

Thus, we introduce the data in the mathematical expression to calculate the specific heat (Cp):

Cp = q/(m x ΔT) = 3050 J/(170 g x 20.0⁰C) = 0.897 J/g.⁰C

8 0
3 years ago
Help!!!!!!!!!!!!!!!!!!
olga nikolaevna [1]

\\ \rm\longmapsto 9.7300\times 10^2+9.8700\times 10^3

\\ \rm\longmapsto 9.73\times 10^4+9.87\times 10^3

\\ \rm\longmapsto 19.6\times 10^{4+3}

\\ \rm\longmapsto 19.6\times 10^7

4 0
3 years ago
Read 2 more answers
A block of iron has a mass of 826 g. What is the volume of the block of iron whose density at 25°C is 7.9
LuckyWell [14K]

Answer:

105

Explanation:

Density = mass/volume

therefore volume = mass/density

826/7.9=105 (To three significant figure)

8 0
3 years ago
Check out this long-form version of the periodic table. It shows where the two rows of
MatroZZZ [7]

Answer:

The long form version is too wide to easily fit on a computer screen or sheet of paper

Explanation:

8 0
3 years ago
Can someone help me with this plz??
cestrela7 [59]

Answer:

I dont know at all and that is confusing.

5 0
3 years ago
Other questions:
  • How do the number of electrons change across the periodic table?
    12·1 answer
  • Sodium carbonate can be made by heating sodium bicarbonate: 2NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g) At 25°C, for this reaction,
    13·1 answer
  • Metalloids have properties of what other families or elements? Group of answer choices
    15·1 answer
  • PLZ HELP
    12·1 answer
  • The molar mass of CCI2F2
    13·1 answer
  • Who ever does this, get brainiest.
    13·1 answer
  • How does voltage work in a circuit?​
    7·1 answer
  • Considering change of state descriptions, select the name of the change of state for when energy is absorbed. Group of answer ch
    12·1 answer
  • 8.5 g of rubidium are reacted completely with water.
    6·1 answer
  • A brick has a mass of 100 G and a volume of 25CM3 what is the density of the brick
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!