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
Stells [14]
2 years ago
6

13. Which statement about trace elements in our atmosphere is false?

Chemistry
1 answer:
tatiyna2 years ago
6 0

Answer: sorry I’m not sure

Odjri:

You might be interested in
In your OWN words explain how season are formed
astra-53 [7]

Answer: Weather currents change wind tempature and there for change the weather of the seasons.

3 0
3 years ago
Read 2 more answers
In terms of energy, how would you classify the following chemical reaction?
olga_2 [115]

1. Answer;

- Exothermic reaction

Explanation;

-Exothermic reactions are types of chemical reactions in which heat energy is released to the surroundings. Since enthalpy change is the difference between the energy of products an that of reactants. It means that in an exothermic reaction the energy of products is less than that of products. In this case an energy of 315kJ is released to the surroundings.

2. Answer;

Conserved

-The total amount of energy before and after a chemical reaction is the same. Thus, energy is conserved.

Explanation;

-According to the law of conservation of energy, energy is neither created nor destroyed. Energy may change form during a chemical reaction. For example, energy may change form from chemical energy to heat energy when gas burns in a furnace. However, the exact amount of energy remains after the reaction as before, which is true for all chemical reactions.

3 0
3 years ago
Read 2 more answers
Brain if correct<br><br><br> (3)
Anni [7]

Answer:

Darker colored items absorb more of the sunlight.

Explanation:

Lighter colored item tend to reflect more of the sunlight

8 0
2 years ago
Read 2 more answers
Why can you never see the far side of the mood from earth?
horsena [70]
The answer is C, because the moon does rotate it just rotates at the perfect time for us to never side the other side of it.  
3 0
3 years ago
Read 2 more answers
How many molecules of hydrogen gas (Hz) are needed to produce 9.0 x 1023 molecules of H2O?
VashaNatasha [74]

Answer:

Explanation: Ammonia (NH3) is produced by the reaction of nitrogen gas and hydrogen gas. ... How many grams of fluorine gas are needed to produce 100.00g of AlF3? ... How many molecules of CO2 gas can be produced of 156.24g of benzene, ... (a) If 16.74.g of Fe and 9.0 9 of H2O are allowed to react, how many grams of products.

4 0
2 years ago
Other questions:
  • What role does the mantle play in the rock cycle?
    15·2 answers
  • United States
    11·1 answer
  • What happens to earth materials when water flows over landforms?
    11·1 answer
  • People have developed models of the universe for thousands of years. Identify two observations that a model of the universe woul
    11·1 answer
  • A reaction was set up to convert an alcohol to a carbonyl Samples of the reaction mixture were checked by infrared spectrometry
    10·1 answer
  • Relative formula mass of ammonium sulphate?
    11·1 answer
  • I need help please, will mark you the brainliest.
    15·1 answer
  • A machine
    9·2 answers
  • Can someone help me pls :)
    12·1 answer
  • When using a calorimeter, the initial temperature of a metal is 70.4C. The initial temperature of the water is 23.6C. At the end
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!