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
vfiekz [6]
3 years ago
15

Astronomers think planets formed from interstellar dust and gases that clumped together in a process called _____. A. stellar ev

olution B. nebular aggregation C. planetary accretion D. nuclear fusion
Chemistry
1 answer:
Akimi4 [234]3 years ago
6 0
Your answer is stellar evolution
You might be interested in
Which best describes nuclear fusion? O A nucleus spontaneously splits and absorbs energy O Two nuclei spontaneously combine and
KIM [24]

Answer: Nuclei combine to form a heavier nucleus, releasing energy. ​

Explanation:   e.g two deuterium nucleus (Hydrogen-2 isotopes) forms an He nucleus and energy is released.

4 0
2 years ago
How does changing the pressure affect the chemical reaction?
olasank [31]
A is the answer
Hope it helps :)
6 0
3 years ago
Calculate the molality of isoborneol in the product if, a) the melting point of pure camphor is 179°C and the melting point take
tresset_1 [31]

Answer:

The molality of isoborneol in camphor is 0.53 mol/kg.

Explanation:

Melting point of pure camphor= T =179°C

Melting point of sample = T_f = 165°C

Depression in freezing point = \Delta T_f=?

\Delta T_f=T- T_f=179^oC-165^oC=14^oC

Depression in freezing point  is also given by formula:

\Delta T_f=i\times K_f\times m

K_f = The freezing point depression constant

m = molality of the sample

i = van't Hoff factor

We have: K_f = 40°C kg/mol

i = 1 (  organic compounds)

\Delta T_f=14^oC

14^oC=1\times 40^oC kg/mol\times m

m=\frac{14^oC}{1\times 40^oC kg/mol}=0.35 mol/kg

The molality of isoborneol in camphor is 0.53 mol/kg.

8 0
3 years ago
Only 11% of all the energy used in the US comes from a renewable source. Why is this a<br> problem?
mr Goodwill [35]
Fossil fuels and unnatural energy sources still dominate in the US, this influences many problems including global warming, climate change, and pollution. Burning fossil fuels is also a problem to human health. And unnatural resources won’t be there forever whereas, renewable sources could last a long time.
5 0
3 years ago
An electrochemical cell has the following overall reaction.
elena-s [515]
Its 4 dude i did this already
8 0
3 years ago
Read 2 more answers
Other questions:
  • Question 8 1.2 pts an atom of bromine has a mass about four times greater than that of an atom of neon. which choice makes the c
    5·1 answer
  • Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five tr
    15·1 answer
  • Determine the mass of carbon iv oxide ,produced on burning 104g of ethyne​
    6·1 answer
  • Graphite from a pencil and a diamond ring are made of the same material. Explain how this is possible. Include a detailed descri
    15·1 answer
  • 23.Explain why children often look like their parents.
    15·2 answers
  • What is the mass of 1 mole of carbon?
    5·1 answer
  • Which of the following represent configurations of thallium ions in compounds? Explain your decision in each case. a TIP" [Xe]4f
    8·1 answer
  • Define Malleability.<br>Ty!!<br>​
    11·1 answer
  • 5.4 g of Aluminium reacts with 300 mL of 0.2 mol/L hydrochloric acid solution. A. Write equation for the reaction taking place.
    9·1 answer
  • Is the formation of sulfur tetrafluoride monoxide endothermic or exothermic?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!