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
klemol [59]
3 years ago
9

Does anybody know the answer to these two questions ?

Chemistry
1 answer:
Serjik [45]3 years ago
4 0
the first is hydroxide. I believe d is the second one but I'm not 100% positive so you may want to get a second opinion
You might be interested in
Changes in the composition of the atmosphere have caused gradual changes in earth's _______ throughout history, causing changes
bearhunter [10]

climate

Changes in the composition of the atmosphere have caused gradual changes in earth's <u>climate</u> throughout history, causing changes in plant and animal life that contributed to mass extinctions.

The following are some of the reasons:

  • UV light
  • climate
  • pollutants
  • hydrofluorocarbons

heat

  • The surface of the Earth warms up as sunlight strikes it.
  • Surface-emitted infrared light is absorbed in the atmosphere and transformed into heat.
  • The temperature close to the surface rises as a result of this heat being trapped in the atmosphere.
<h3>UV light:</h3>
  • indirect impacts of climate change on UV radiation from the surface.
  • By changing the concentrations of ozone, UV-absorbing tropospheric gases, aerosols, and clouds in the atmosphere, climate change may have indirectly affected UV radiation levels in the past.
  • These influences are probably going to persist in the future.
<h3>climate:</h3>
  • People are at risk from food and water shortages, greater flooding, high heat, an increase in disease, and economic loss due to climate change.
  • Conflict and human migration are potential outcomes.
  • Climate change is the top hazard to world health in the twenty-first century, according to the World Health Organization (WHO).
<h3>pollutants:</h3>
  • these are also resulting in the increase of temperature of the Earth and is also damaging ozone layer.

To learn more about the changes in earth visit:

brainly.com/question/13434833?

#SPJ4

6 0
1 year ago
Give the half equation to show what happens to oxygen when it is rusting
ycow [4]

Answer:

½O 2 + 2e - + H 2O → 2OH.

Explanation:

Redox reactions - Higher

In terms of electrons:

oxidation is loss of electrons

reduction is gain of electrons

Rusting is a complex process. The example below show why both water and oxygen are needed for rusting to occur. They are interesting examples of oxidation, reduction and the use of half equations:

iron loses electrons and is oxidised to iron(II) ions: Fe → Fe2+ + 2e-

oxygen gains electrons in the presence of water and is reduced: ½O2 + 2e- + H2O → 2OH-

iron(II) ions lose electrons and are oxidised to iron(III) ions by oxygen: 2Fe2+ + ½O2 → 2Fe3+ + O2-

3 0
3 years ago
Please helo asap! Giving brainliest.
mojhsa [17]

D, Neon and argon are both noble gases and contain almost the same elements.

6 0
3 years ago
Which element exhibits a crystalline<br> structure at STP?<br> 1)F<br> 2)CI<br> 3)Br<br> 4) I
umka21 [38]
It would be F only because I wouldn’t make sense CI doesn’t exhibit crystalline neither does BR so F
6 0
3 years ago
Are plant cells affected when water is scarce
liraira [26]
Plant cells are affected as they begin to wilt and reduce photosynthesis
7 0
3 years ago
Read 2 more answers
Other questions:
  • There are 25 elements found in living things. How many of these elements are found in some organisms but not all? o 1 O 6 019 o
    14·2 answers
  • Help me answer this please
    12·1 answer
  • (I seriously don't understand what this questin means, please don't delete need all the help i can get)
    8·2 answers
  • If a solid has a density of 4.0 g/cm^3, what volume of the solid has a mass<br> of 24 g? Show work.
    8·1 answer
  • Why do sex cells have half a set of chromosomes
    7·1 answer
  • A sample of 54.78 liters of H2 would have a mass of
    9·1 answer
  • A sample of a compound contains 60.0 g C and 5.05 g H. Its molar mass is 78.12 g/mol. What is the compound’s molecular formula?
    12·1 answer
  • Which of these compounds would you expect
    6·1 answer
  • Can you help me with three please? We’re balancing electrons
    14·1 answer
  • A female spinach plant with flat (Ff) leaves is crossed with (pollination and fertilization occur) a male spinach plant with cri
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!