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
wlad13 [49]
3 years ago
9

Is a tree getting struck by lightning a physical or chemical change?

Chemistry
1 answer:
FrozenT [24]3 years ago
7 0

A tree getting struck by lightning, it is an example of a physical change.

It is so because when a tree getting struck by lightning, it encountered a strong force of power but no new substance is formed here. So it is a physical change, if it is a chemical change then a new substance must formed here. So when a tree getting struck by lightning, it is an example of a physical change.

You might be interested in
150 ml of 0.1 m naoh is added to 200 ml of 0.1 m formic acid, and water is added to give a final volume of 1 l. what is the ph o
N76 [4]

Number of moles of NaOH = V(NaOH) * M(NaOH)= 0.150 L * 0.1 moles/L = 0.015 moles

Number of moles of formic acid, HCOOH = V(HCOOH) * M(HCOOH) = 0.200 L * 0.1 moles/L = 0.020 moles

Here, the limiting reagent is NaOH

The reaction is represented as:

HCOOH + NaOH ↔HCOONa + H2O

Moles of HCOONa formed = Moles of the limiting reagent, NaOH = 0.015 moles

Moles of HCOOH remaining = 0.020-0.015 = 0.005 moles

Total final volume is given as 1 L

Therefore: [HCOOH] = 0.005 moles/1 L = 0.005 M

[HCOONa] = 0.015/1 = 0.015 M

pKa of HCOOH = 3.74

As per Henderson-Hasselbalch equation

pH = pka + log[HCOONa]/[HCOOH] = 3.74+log[0.015/0.005] = 4.22

Therefore, pH of the final solution = 4.22


                       


3 0
3 years ago
The graph shows the consumption of gasoline and diesel fuels by vehicles in the United States for a period of 40 years.
grigory [225]

Answer:

B. It would lead to an increase of global temperatures.

Explanation:

Gas burns when it is hot. Therefore the more gas that our cars consume, the hotter the air will be when the car releases those gas vapors. Causing the air to become hotter.

Hope this helped <3 :) brainliest?

5 0
2 years ago
Read 2 more answers
In 1895, X-rays were accidentally discovered during a scientific experiment. Today, X-rays are used to screen luggage in airport
allsm [11]
Thanks for your question!

The answer is science influencing technology, as it was discovered in a science experiment. It doesn't really influence society as much because it doesn't influence the way people act, just the how things work.

Hope this helped!
<span />
4 0
3 years ago
Qué condiciones existen entre las condiciones históricas del surgimiento de la filosofía​
frutty [35]

Answer:

History is the study of the past in all its forms. Philosophy of history examines the theoretical foundations of the practice, application, and social consequences of history and historiography. It is similar to other area studies – such as philosophy of science or philosophy of religion – in two respects.

Explanation:

7 0
3 years ago
A sample of gas is in a sealed rigid cointaner that maintains a constant volume which changes occur between the gas particles wh
sashaice [31]

In the given situation, the gas is heated under constant volume. As energy is supplied to the system in the form of heat, the frequency of collision between the gas particles increases. This increases the temperature of the gas consequently bringing about a decrease in pressure.

Based on the ideal gas law:

PV = nRT

Here, P/T = nR/V

If P1, T1   and P2, T2 are the pressure and temperature values before and after heating respectively, then since nR/V is a constant in this case, we have

P1/T1 = P2/T2 which is the Gay-Lussac's law.

8 0
3 years ago
Other questions:
  • Which of these do all cells release? and why?<br> A. sugar <br> B. water<br> C. energy<br> D. oxygen
    7·2 answers
  • A baker uses sodium hydrogen carbonate (baking soda) as the leavening agent in a banana-nut quick bread. the baking soda decompo
    8·1 answer
  • In an attempt to maximize the yield of methanol (amount of methanol produced), a chemist would try to shift the equilibrium as f
    11·1 answer
  • Is roasting a marshmallow a Chemical or Physical reaction?
    6·2 answers
  • Why is a control group important in an experiment?
    6·1 answer
  • What type of front is associated with hail storms
    10·2 answers
  • Fall is usually a little warmer than spring. And yet, the Sun's path is the same in both seasons. Select all that apply.PLEASE A
    5·1 answer
  • What is the formula for Tetrachlorine pentaiodide
    7·1 answer
  • Magnesium metal reacts with oxygen according to the equation: Mg(s) + O2(g) → 2MgO2(s)
    14·1 answer
  • How would you prepare 500 ml of a .50m solution of naoh from a 2 m stock solution
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!