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navik [9.2K]
3 years ago
6

Maria and miquel were enjoying the fireworks when they got into a chemistry argument. maria insisted that the fireworks were the

result of a chemical reaction. miguel disagreed. what would you tell them to solve this argument.
a.it is a change of state, solid to gas, due to the addition of energy.
b.the color changes and the release of energy indicate a chemical reaction.
c.because the fuse were lit and energy is added, it is a physical reaction.
d.it is an endothermic reaction because energy was added; therefore it is a chemical reaction,
Chemistry
2 answers:
Damm [24]3 years ago
4 0

the answer is the 2nd option or b.

Travka [436]3 years ago
3 0
B. 2rd option :) mark me as brainest answer plz
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Fill in the Blank
Arisa [49]

Answer: Quantitative data

Explanation:

3 0
3 years ago
How many hydrogen atoms are in a cycloalkane with 8 carbon atoms?
frosja888 [35]
Cycloalkanes are those saturated organic compounds which exist in the form of Rings. Their Hydrogen Deficiency Index in one. The General formula for cycloalkanes is,
                                                  CnH2n
When number of Carbons = 8
Then
                                                  C₈H₂₍₈₎

                                                  C₈H₁₆

Result:
           
Cycloalkane containing 8 carbon atoms has 16 hydrogen atoms.

8 0
4 years ago
In the following reaction, how many grams of NaBr will react with 311 grams of Pb(NO3)2?
Mashutka [201]
Molar mass :

NaBr = 103 g/mol

Pb(NO3)2 = 331.20 g/mol

<span><span /><span>Balanced chemical equation :

</span></span>2 NaBr + 1 Pb(NO3)2 = 2 NaNO3 + 1 PbBr<span>2
</span><span>
2*103 g NaBr ------------> 1 * 331.20 g Pb(NO3)2
      g NaBr  -------------------> 311 g Pb(NO3)2

331.20  g  =   2*103*311

331.20 g = 64066

mass ( NaBr ) =  64066 / 331.20

mass ( naBr)  = 193,43 g of NaBr

hope this helps!.


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5 0
3 years ago
Please help!! Having trouble with this
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For #4 first find the molar mass(M) of copper then use that and the mass (m) n=m/M to find moles(n) using moles and the volumes find the concentration using c=n/V
7 0
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4. Aromatic Hydrocarbon
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