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Alika [10]
2 years ago
15

What are some signs that a chemical change takes place when a firework explodes?Matter is destroyedLight is producedHeat is prod

ucedThe chemical composition is not changed
Chemistry
2 answers:
dangina [55]2 years ago
7 0

Answer:

Light and heat produced

Explanation:

Ray Of Light [21]2 years ago
5 0
<h2>Answer;</h2>

Light is produced and heat is produced

<h2>Explanations</h2>

Chemical changes occurs when substances react to form new products. This reaction can be in form of a decomposition reaction.

During fireworks explosion, there is a reaction between charge of gunpowder which is been ignited with a fuse to produce a spark that leads to explosion.

The explosion leads to production of light and heat. Hence we can conclude that some signs that a chemical change takes place when a firework explodes is light is produced and heat is produced

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hi here is your answer hope it helps or then sry

Explanation:

The Solar Impulse Label is granted to innovative solutions to air pollution that meet high standards of sustainability and profitability.Each solution goes through a strict assessment process performed by independent experts.

3 0
3 years ago
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Natural gas is primarily composed of ________. natural gas is primarily composed of ________. methane sulfur dioxide nitrogen ox
umka21 [38]
Natural  gas  is primarily composed of   methane (CH4)

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7 0
3 years ago
In the event that you are exposed to infectious materials by being accidentally stuck with a used needle, you should report it t
monitta

The answer is Option B , Wash with soap and water.

That is when you are exposed to infectious materials by being accidentally stuck with a used needle , first thing that needs to be done is that wash with soap and water.

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7 0
3 years ago
If 125 mL of a 1.1 M glucose solution is diluted to 500.0 mL , what is the molarity of the diluted solution? Express your answer
Juli2301 [7.4K]

Answer:

0.28M

Explanation:

From the question given, we obtained the following information:

C1 = 1.1 M

V1 = 125mL

V2 = 500mL

C2 =?

Using the dilution formula C1V1 = C2V2, we can easily find the molarity of the diluted solution as follows:

C1V1 = C2V2

1.1 x 125 = C2 x 500

Divide both side by 500

C2 = (1.1 x 125)/500 =

C2 = 0.28M

3 0
3 years ago
Chlorofluorocarbons such as CCl2F and CCI,F, have been linked to ozone depletion in Antarctica. In 1994, these gases were found
Ilya [14]

Answer:

a) molarity of CCl3F = 1.12 × 10^-11 mol/dm³

Molarity of CCl2F2 = 2.20 × 10^-11 mol/dm³

B) molarity of CCL3F = 7.96 × 10 ^-13 mol/dm³

Molarity of CCl2F2 = 1.55 × 10^-12 mol/dm³

Explanation:

Using the ideal gas equation:

PV = nRT

Further explanations are found in the attachment below.

4 0
4 years ago
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