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bagirrra123 [75]
3 years ago
14

Which element is always present in a combustion reaction?

Mathematics
1 answer:
Alla [95]3 years ago
4 0
Its "C" because without oxygen you can't have fire
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The probability that a traffic light will be green is 40%. If you pass through 3 lights on your way to the store, what is the pr
larisa [96]

Answer:

0.216

Step-by-step explanation:

If the probability of green, P(green) is 40%, the probability of red, P(red) is 60%.

The probability of a light being red is not affected by the colour of the previous light, so at each of the 3 lights, the probability of red is always 60%.

To find the probability that all three lights will be red, multiply the three probabilities together. (Convert them to decimals first).

0.6 x 0.6 x 0.6 = 0.216

7 0
3 years ago
A gas at standard temperature and pressure was measured as having a mass of 1485 grams (g) in a volume of 750 liters (L). Which
tangare [24]

Answer:

Here we will use the relation:

Density = mass/volume.

We know that:

Mass = 1485g

Volume = 750L

Density = 1485g/750L = 1.98 g/L

We do not have the options in order to select the correct one, but knowing this density, we can suppose the possible gases.

Two "common" gases with densities similar to this one are:

Carbon Dioxide, with d = 1.977 g/L

Dinitrogen Monoxide, with d = 1.977 g/L

In both cases, if we round up we will get the same density that we calculated at the beginning, so either of these can be the correct option.

6 0
3 years ago
Which point is on the line y = -2x + 3?<br><br> (-2, -1)<br> (3, 3)<br> (3, -3)<br> (-3, -9)
xenn [34]
I think the answer is (3,3)

5 0
3 years ago
What is the answer to 346*89? <br>Just a random question.
Licemer1 [7]

Answer:

346*89 would turn out to be 30794!

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
NEED HELP ASAP
Anarel [89]

Answer:

  • A
  • B
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Step-by-step explanation:

4 0
3 years ago
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