Answer:
C. Runoff from heavy rainfall forms narrow, shallow channels.
Explanation:
Erosion is the gradual washing away of the top layer of the soil or earth on which plant grows. There are three main types of erosion which are:
1. Sheet erosion
2. Gully erosion
3. Rill erosion
Rill erosion occurs when a soil layer is gradually being washed away by narrow stream channels called streamlets on the surface. After a heavy downpour, the streamlets facilitates the movement of water on the ground surface and in turn, earth materials are worn away.
When these streamlets becomes deeper, they form gullies. Gullies results into gully erosion.
When runoff removes soil and loose sediment in thin layers it is called sheet erosion.
<em>réponse</em>: <em>verdadero</em>
<em>Explication</em>:
Answer:
Answers are in parentheses.
In the Bohr model of the atom, the electrons move in fixed, (circular) paths around a dense positively-charged nucleus. On the other hand, the quantum mechanical model shows the probability of finding an electron as a (cloud) of negative charge.
Answer:
Potassium Dichromate is an orange to red colored, crystalline, inorganic compound that emits toxic chromium fumes upon heating. Potassium dichromate is highly corrosive and is a strong oxidizing agent. This substance is used in wood preservatives, in the manufacture of pigments and in photomechanical processes, but is mainly replaced by sodium dichromate. Potassium dichromate primarily affects the respiratory tract causing ulcerations, shortness of breath, bronchitis, pneumonia and asthma but can also affect the gastrointestinal tract, liver, kidneys and immune system. This substance is a known human carcinogen and is associated with an increased risk of developing lung cancer and cancer of the sinonasal cavity. (NCI05)
Answer:
A) 
B) 0.025 mol (SCN)₂
C) 2 mol (SCN)₂
D) 
E) 3.5504 mol H₂SO₄
Explanation:
2NaSCN +2H₂SO₄ + MnO₂ → (SCN)₂ + 2H₂O + MnSO₄ + Na₂SO₄
A) A conversion factor could be , as it has the units that we want to <u>convert to in the numerator</u>, and the units that we want to <u>convert from in the denominator</u>.
B) 0.05 mol NaSCN * = 0.025 mol (SCN)₂
C) With 4 moles of NaSCN and 3 moles of MnSO₄, the<em> reactant </em>is NaSCN so we use that value to calculate the moles of product formed:
4 mol NaSCN * = 2 mol (SCN)₂
D)
E) 1.7752 mol MnSO₄ * 
= 3.5504 mol H₂SO₄
