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
andre [41]
3 years ago
8

Please help me with this question!

Chemistry
1 answer:
asambeis [7]3 years ago
3 0
I cant help u sorry .......
You might be interested in
A system does 591 kJ of work and loses 256 kJ of heat to the surroundings.
Mars2501 [29]

Answer:

-847kj

Explanation:

Delta E= -256+-591

5 0
3 years ago
A tire at 21°C has a pressure of 0.82 atm. Its temperature decreases to –3.5°C. If there is no volume change in the tire, what i
Damm [24]

The correct answer is A 0.75 atm


4 0
3 years ago
Read 2 more answers
The mass of an electron is 9.11× 10–31 kg. What is the uncertainty in the position of an electron moving at 2.00 × 106 m/s with
Kruka [31]
Just use the Heisenberg Uncertainty principle: 

<span>ΔpΔx = h/2*pi </span>

<span>Δp = the uncertainty in momentum </span>
<span>Δx = the uncertainty in position </span>
<span>h = 6.626e-34 J s (plank's constant) </span>

<span>Hint: </span>

<span>to calculate Δp use the fact that the uncertainty in the momentum is 1% (0.01) so that </span>

<span>Δp = mv*(0.01) </span>

<span>m = mass of electron </span>
<span>v = velocity of electron </span>

<span>Solve for Δx </span>

<span>Δx = h/(2*pi*Δp) </span>

<span>And that is the uncertainty in position. </span>
6 0
3 years ago
What is the difference between chemical change and physical change
Nadusha1986 [10]
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. Hope this helps!
7 0
3 years ago
What most likely led to a change in the widely accepted theory of evolution? new experiments involving genes and evolution exper
ss7ja [257]

Incomplete question. Full question reads;

Darwin developed the theory of evolution to explain why there are so many different kinds of living things. He could easily observe that offspring of any animals were slightly different from their parents and that this could allow for big changes over thousands of years. He did not know that genes caused the differences. Genes are now very important in the modern theory of evolution.

What most likely led to a change in the widely accepted theory of evolution?

Answer:

<u>new experiments involving genes and evolution </u>

<u>Explanation:</u>

Indeed, the original theory of evolution has experienced several changes in its acceptance because of its imperfect and wrong assumptions not based on generally acceptable scientific facts,

Hence, new experiments involving genes and evolution has led to a change (disagreements and few agreements) in the widely accepted theory of evolution.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What describes the change in Gibbs free energy (∆G) of a spontaneous reaction?
    8·1 answer
  • What type of reaction is A + B + heat → C + D
    8·1 answer
  • Consider the reaction N2(g) + 2O2(g)2NO2(g) Using standard thermodynamic data at 298K, calculate the entropy change for the surr
    15·1 answer
  • How can modeling crustal deformation of Earth by plate tectonics be used to analyze and hypothesize the causes of earthquakes?
    12·1 answer
  • The body's reaction to a change in the environment is called a response.
    11·1 answer
  • Match each energy transformation to the correct image. ANSWER FAST PLS!!! THIS IS FOR 20 POINTS!!! AND I WILL MARK BRAINLIEST IF
    12·2 answers
  • A 32.0 mL sample of hydrogen is collected over water at 20.0°C and 750.0 mm Hg. What is the volume of the dry gas at STP?
    9·1 answer
  • Find the mass of 3.66 moles of nitrogen.
    13·2 answers
  • How many atoms are in 3.8 mol of calcium? Round your answer to 2 decimal places.
    13·1 answer
  • What is force?.......<br><br>​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!