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madam [21]
3 years ago
10

Is adding manganese dioxide to hydrogen peroxide, a chemical or physical change?

Chemistry
2 answers:
Inessa [10]3 years ago
6 0

Answer:

chemical

Explanation:

Mkey [24]3 years ago
3 0

Answer: chemical change as a new product is formed

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Name three complex molecules synthesized by plants
DiKsa [7]
Oxygen, glucose and starch
Oxygen and glucose are produced during photosynthesis. Glucose is then stored as starch.

Hope it helped!
3 0
3 years ago
Obtain a box of breakfast cereal and read the list of ingredients. What are four chemicals from the list? a. monoglycerides b. c
GREYUIT [131]

Answer:

B. cocamide DEA

C. folic acid

D. iron

G. lauryl glucoside

5 0
3 years ago
The table below lists the properties of a metallic element.
PilotLPTM [1.2K]

Answer:

group 12

Explanation:

5 0
3 years ago
Using the periodic table entry below, match the phrases with their corresponding values.
zhannawk [14.2K]

Atomic mass = 39

number of neutrons = 20

Number of protons= 19

Electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

The number of electron in first shell = 2

number of electrons in n=3 shell = 8


5 0
3 years ago
Read 2 more answers
The combustion of propane (C3H8) produces CO₂ and H₂O:
fomenos

Answer:

4.4 moles of water

Explanation:

Propane is C3H8. Is the chemical equation, you wrote C2H8 which is wrong. Type everything properly and give a check before finally posting the question.

The chemical equation that is given, is not properly balanced. The BALANCED equation would be

C3H8 + 5O2 → 3CO2 + 4H2O

From this balanced chemical equation, we see that 5 moles of oxygen produce 4 moles of water.

5 moles of Oxygen → 4 moles of water

1mole of oxygen → \frac{4}{5} moles of water

5.5 moles of oxygen → (\frac{4}{5} × 5.5) moles of water = 4.4 moles of water

∴ The reaction of 5.5 mol of O2 will produce <u>4.4</u> mol of H2O. [Answer:]

5 0
3 years ago
Read 2 more answers
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