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nordsb [41]
3 years ago
10

What happens to wood when it burns?

Chemistry
1 answer:
scoundrel [369]3 years ago
8 0

Answer:

Explanation:When wood is burned, oxygen and other elements in the air (mainly carbon, hydrogen and oxygen) react to form carbon dioxide that is released into the atmosphere, while the minerals turn into ashes. ...

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The following chemical equation is a balanced equation true or false
lesantik [10]

Answer:

False

Explanation:

2CH₄ + 2O₂ ⟶ 2CO₂ + 2H₂O

Let’s count the atoms on each side of the reaction arrow.

<u>Atom</u>  <u>On the left</u>  <u>On the right</u>

  C              2                    2

  H              8                    4

  O              4                    6

C is balanced, but there are different numbers of H and O on each side.

The equation is not balanced .

6 0
3 years ago
If a solution containing 126.27 g of mercury(ii) nitrate is allowed to react completely with a solution containing 17.796 g of s
Sphinxa [80]

The number of solid precipitate that will be formed is  37.08 g

calculation

write the equation for reaction

=Hg(NO3)2 +Na2SO4 = HgSO4(s) +2NaNO3(aq)

find the moles of each reactant

moles ofHg(NO3)2=126.27/324.6= 0.389 moles

moles of Na2SO4=17.796/142=0.125 moles

NaSO4 is the limiting reagent and by use of mole ratio of NaSO4:HgSO4 which is 1:1 therefore the moles of H2SO4 is also= 0.125 moles

mass HgSO4=moles x molar mass

=0.125 x296.65= 37.08g


8 0
4 years ago
Read 2 more answers
A liquid is heated until boils.
ella [17]
C. The thermometer reads 100
7 0
3 years ago
A 5.0-mL sample of CO2 gas is enclosed in a gas-tight
Neporo4naja [7]

Answer:

3.5ML

Explanation:

4 0
4 years ago
You are provided with a compound fertilizer, 40-15-10.Calculate the quantity of fertilizer to add to a one hectare field supply
Verdich [7]

Answer:

a. 300 Kg of fertilizer

b. 225 Kg of fertilizer

c. 400 Kg of fertilizer

d. 600 Kg of fertilizer

Explanation:

The percentage composition ratio of Nitrogen, Phosphorus and Potassium in a 1 Kg bag of the given fertilizer is 40:15:10.

Therefore a  1 Kg bag contains;

40/100 * 1 Kg = 0.4 Kg of Nitrogen;

15/100 * 1 Kg = 0.15 Kg of phosphorus;

10/100 * 1 Kg = 0.1 Kg of potassium

Quantity of fertilizer required to add to a hectare to supply;

a. Nitrogen at 120 kg/ha = 120/0.4 = 300 Kg of fertilizer

b.. Nitrogen at 90 Kg/ha = 90/0.4 = 225 Kg of fertilizer

c. Phosphorus at a rate of 60 kg/ha = 60/0.15 = 400 Kg of fertilizer

d. Potassium at a rate of 60 kg/ha = 60/0.1 = 600 Kg of fertilizer

8 0
3 years ago
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