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Katyanochek1 [597]
3 years ago
6

Which of the following is not true concerning cover crops?

Chemistry
2 answers:
Rama09 [41]3 years ago
8 0
The correct answer is: THEY ARE SOLD AS CASH CROPS.
Nonamiya [84]3 years ago
7 0

Answer:

c. they are sold as cash crops

Explanation:

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Which of the following methods separates a homogeneous solution by spinning the solution very fast?
Zolol [24]

Answer:

<em> The answer is </em><u><em>(D) Magnetism</em></u>

The methods separates a homogeneous solution by spinning the solution very fast is magnetism.

7 0
3 years ago
Read 2 more answers
Secondary amines react with the nitrosonium ion to generate ________. n-nitrosoamines diazonium salts anilines imines oximes
katen-ka-za [31]
Answer:
             Secondary amines react with the nitrosonium ion to generate <span><u>N-Nitrosoamines</u>.

Explanation:
                   Nitosonium Ion is generally utilized in the formation of Diazonium Salts which are considered excellent starting Material from synthesis point of View. Diazonium salts are formed by reacting Primary Amine or Anilines with Nitrosonium Ions. In our case, the Amine given is Secondary. So, reaction of <em>Sec.</em> Amines with Nitrosonium Ions stops after the formation of N-Nitrosoamine as there is no Hydrogen attached to Nitrogen atom of Amine to be eliminated and form a double and eventually triple bond with the Nitrogen atom of Nitrosonium Ion.</span>

7 0
3 years ago
Sugar cubes are placed in water. how will the mixture be affected by stirring the water, by breaking apart the sugar cubes, or b
tangare [24]
When the sugar cubes are <span>placed in water, then, the mixture will be affected by stirring the water. 
By stirring the water, the sugar cubes dissolve in water. The molecules of sugar cubes interact with water molecules in the jar. But when more sugar is added to the water, there comes a saturation point when no more sugar will be dissolved and it will settle down. Then, by raising the temperature the settled sugar will be dissolved too.</span>
6 0
3 years ago
Read 2 more answers
Upon heating, a 5.41 g sample of a compound decomposes into 2.37 g n 2 ​ and 3.04 g h 2 ​ o. if the molar mass of the compound i
Elan Coil [88]
Answer is: empirical formula is H₄N₂O₂.
m(unknown compound) = 8,5 g.
m(N₂) = 2,37 g.m(H₂O) = 3,04 g.
n(N₂) = m(N₂) ÷ M(N₂).
n(N₂) = 2,37 g ÷ 28 g/mol.
n(N₂) = 0,0846 mol.
n(H₂O) = m(H₂O) ÷ M(H₂O).
n(H₂O) = 3,04 g ÷ 18 g/mol.
n(H₂O) = 0,168 mol.
n(H₂O) : n(N₂) = 0,168 mol : 0,0846 mol.
n(H₂O) : n(N₂) = 2 : 1.
Compound has four hydrogen, two oxygen and two oxygen.
3 0
3 years ago
Read 2 more answers
How much heat is transferred when during a reaction, 531 g of water increases from 22.7 ○C to 38.8 ○C?
vazorg [7]

Answer:

8.55 × 10³ cal

Explanation:

Step 1: Given and required data

  • Mass of water (m): 531 g
  • Specific heat of water (c): 1 cal/g.°C
  • Initial temperature: 22.7 °C
  • Final temperature: 38.8 °C

Step 2: Calculate the temperature change (ΔT)

ΔT = Final temperature - Initial temperature = 38.8 °C - 22.7 °C = 16.1 °C

Step 3: Calculate the heat required (Q)

We will use the following expression.

Q = c × m × ΔT

Q = 1 cal/g.°C × 531 g × 16.1 °C = 8.55 × 10³ cal

8 0
3 years ago
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