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Luba_88 [7]
3 years ago
10

A method of farming that disturbs the soil and its plant cover as the responsible is called

Chemistry
2 answers:
Mekhanik [1.2K]3 years ago
5 0
A method of farming that disturbs the soil and its plant cover as little as possible is called Conservation Plowing.
tankabanditka [31]3 years ago
3 0
Conservation plowing.
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Complete the following sentences with the protagonist’s name and adjectives to describe him or her at each stage of the plot. Us
djverab [1.8K]

Answer:

hi

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3 0
2 years ago
1 Calcium carbonate breaks down on heating to produce calcium oxide and carbon dioxide gas.
Alborosie

Answer:  See below

Explanation:

1.  a)  0.15 moles calcium carbonate  (15g/100g/mole)

   b)  0.15 moles CaO  (molar ratio of CaO to CaCO3 is 1:1)

   c)   8.4 grams CaO  (0.15 moles)*(56 grams/mole)

2. a)  0.274 moles Na2O  (17g/62 grams/mole)

   b)  46.6 grams NaNO3  (2 moles NaNO3/1 mole Na2O)*(0.274 moles Na2O)*(85 g/mole NaNO3)

7 0
3 years ago
Which material is a mixture?<br> 1. water<br> 2. air <br> 3. methane<br> 4. magnesium
skelet666 [1.2K]
Pure air is a mixture of several gases that are invisible and odorless. Consists of 78% nitrogen, 21% oxygen, and less than 1% of argon, carbon dioxide.  
3 0
3 years ago
Read 2 more answers
When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(II)
katen-ka-za [31]

Answer:

3.81 g Pb

Explanation:

When a lead acid car battery is recharged, the following half-reactions take place:

Cathode: PbSO₄(s) + H⁺ (aq) + 2e⁻ → Pb(s) + HSO₄⁻(aq)  

Anode: PbSO₄(s) + 2 H₂O(l) → PbO₂(s) + HSO₄⁻(aq) + 3H⁺ (aq) + 2e⁻

We can establish the following relations:

  • 1 A = 1 c/s
  • 1 mole of Pb(s) is deposited when 2 moles of e⁻ circulate.
  • The molar mass of Pb is 207.2 g/mol
  • 1 mol of e⁻ has a charge of 96468 c (Faraday's constant)

Suppose a current of 96.0A is fed into a car battery for 37.0 seconds. The mass of lead deposited is:

37.0s.\frac{96.0c}{s} .\frac{1mole^{-} }{96468c} .\frac{1molPb}{2mole^{-} } .\frac{207.2gPb}{1molPb} =3.81gPb

6 0
3 years ago
२<br> 1. A ratio of the parts of a mixture are exact true or false.
Xelga [282]
False. mixtures dont have specific ratios
6 0
3 years ago
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