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Gnoma [55]
3 years ago
12

1. The brilliant red colors seen in fireworks are due to the emission of light

Chemistry
1 answer:
valentina_108 [34]3 years ago
4 0

Answer:

what does c and m and n stand for?

Explanation:

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How does the line spectra are used to identify elements and what they indicate about atoms?
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3 0
3 years ago
A measure of the kinetic energy of particle motion within a substance is temperature.
Alchen [17]
True. You're welcome!
3 0
3 years ago
Where does the rest of the energy “lost” go? <br> (In food webs)
Blizzard [7]

Explanation:

The rest of the energy is passed on as food to the next level of the food chain. The figure at the left shows energy flow in a simple food chain. Notice that at each level of the food chain, about 90% of the energy is lost in the form of heat.

3 0
3 years ago
Read 2 more answers
Na2S2O3 + AgBr NaBr + Na3ſAg(S203)2] What is
gtnhenbr [62]

Answer:

Mass of NaBr produced  = 23.67 g

Explanation:

Given data:

Mass of AgBr = 42.7 g

Mass of NaBr produced = ?

Solution:

Chemical equation:

2Na₂S₂O₃ + AgBr    →    NaBr + Na₃(Ag(S₂O₃)₂

Number of moles of AgBr:

Number of moles = mass/molar mass

Number of moles = 42.7 g/ 187.7 g/mol

Number of moles = 0.23 mol

now we will compare the moles of AgBr with NaBr.

             AgBr        :         NaBr

                1            :           1

              0.23       :         0.23

Mass of NaBr:

Mass = number of moles × molar mass

Mass = 0.23 mol × 102.89 g/mol

Mass = 23.67 g

8 0
3 years ago
Calculate the heat absorbed when 31.6 g of ice at 0°C is completely melted​
attashe74 [19]

Latent heat of fusion for ice is 33600J/k

  • Mass=31.6J/k

Heat absorbed

  • k_f×m
  • 31.6×33600
  • 1061,740mJ
  • 1061J
8 0
2 years ago
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