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STatiana [176]
3 years ago
8

CAN SOMEONE PLEASE HELP ME !!!

Chemistry
1 answer:
olga nikolaevna [1]3 years ago
8 0
Climate-
the weather conditions prevailing in an area in general or over a long period.

rising maximum temperatures
rising minimum temperatures
rising sea levels
higher ocean temperatures
an increase in heavy precipitation (heavy rain and hail)
shrinking glaciers
thawing permafrost

Fossil fuels — coal, petroleum, and natural gas — are our main sources of energy, producing the vast majority of fuel, electricity, and heat used by people across the globe. In 2005 a whopping 86 percent of energy used worldwide came from fossil fuel combustion, and right now in the United States, the number isn’t much lower at about 85 percent. Unfortunately fossil fuels are also the primary culprit behind climate change. In the United States, they’re to blame for more than 80 percent of greenhouse gas emissions — and 98 percent of CO2 emissions alone. And while natural processes can absorb some of this CO2, an estimated 4.1 billion metric tons of it is added to our atmosphere each year. That number will rise dramatically if we don’t check ourselves.
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When an electron moves up to higher energy levels, the atom Choose... a photon of light whereas the atom Choose... a photon of l
Alona [7]

Answer:

Explanation:

When an electron moves from a lower energy level to a higher energy level, energy is absorbed by the atom. When an electron moves from a higher to a lower energy level, energy is released and photon is emitted.

this emitted photon is depicted as a small wave-packet being expelled by the atom in a well-defined direction.

5 0
3 years ago
Giving max amount of points, I just need this answered. It's a K12 assignment. Using the room temperature line (orange line) and
slamgirl [31]

Answer:

H-1 solid                               Ne-10 Liquid

He-2 Solid                            Na-11 Liquid

Li-3 Liquid to Gas                 Mg-12 Gas

Be-4 Gas                              Al-13 Gas

B-5 Gas                               Si-14 Gas

C-6 Gas                                P-15 Liquid to Gas

N-7 Liquid                             S-16 Liquid to Gas

O-8 Liquid                             CI-17 Liquid

F-9 Liquid                              Ar-18 Liquid

     >>>>>>>>>>>>>>             K-19 Gas

                                              Ca-20 Gas

8 0
3 years ago
Which of the following are Arrhenius Bases? <br> A) CH3OH<br> B) CH3COOH<br> C) HOH<br> D) H2NNH2
Viktor [21]
<h3>Answer:</h3>

                  H₂O

Explanation:

                      According to Arrhenius Concept of Acid and Base, "Acid is any specie which when dissolved in water ionizes to produce H⁺ ions".

Examples:

                                  HCl    →    H⁺  +  Cl⁻

                                  H₂SO₄    →    2 H⁺  +  SO₄²⁻

While, "Bases are those species which when dissolved in water produces Hydroxyl Ions (OH⁻)".

Examples:

                                  NaOH    →  Na⁺  +  OH⁻

                                  Mg(OH)₂    →     Mg²⁺  +  2 OH⁻

Given Options:

CH₃OH:

             Methanol when dissolved in water does not dissociate as follow,

                                    CH₃OH     →     H₃C⁺  +  OH⁻

Hence, it does not behave as Arrhenius Base.

CH₃COOH:

                  Acetic acid when dissolved in water produces H⁺ ions and Acetate ions i.e.

                                 CH₃COOH    →    CH₃COO⁻  +  H⁺

Therefore, it can act as Arrhenius Acid instead of Arrhenius Base.

H₂O:

        Water when dissolved in water dissociates as,

                                                  H₂O    →    H⁺  +  OH⁻

As it is producing both H⁺ and OH⁻ ions therefore, it can act as both Arrhenius Base and Arrhenius Acid.

H₂NNH₂:

              Hydrazine when dissolved in water can neither produce OH⁻ ions nor H⁺ ions hence, it is neither Arrhenius Base nor Arrhenius Acid,

4 0
3 years ago
If one mole of iron (III) oxide is needed to react with three moles of carbon monoxide (CO) in a reaction to produce two moles o
Nutka1998 [239]
It is 2:1 I know that is the answer
4 0
4 years ago
Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water and carbon dio
Nady [450]

Answer:

Mass of glucose = 180.156 g

Explanation:

Chemical equation:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

Number of moles of water = 6 mole

Molar ratio:

Mole ratio of water and glucose:

              H₂O         :         C₆H₁₂O₆

               6             :           1

Mass of glucose produced by 6 mole of water:

Mass of glucose = number of moles × molar mass

Mass of glucose =  1 mol × 180.156 g/mol

Mass of glucose = 180.156 g

3 0
3 years ago
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