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hjlf
3 years ago
7

How is firelight produced

Chemistry
2 answers:
malfutka [58]3 years ago
6 0
 Firelighting<span> is the process by which a </span>fire<span> can be started artificially. </span>
Andre45 [30]3 years ago
6 0
Different temperatures are produced and result in different colors.<span>chemical reactions release heat, releasing gases and raising materials to high temperatures

</span>
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If you are operating a power driven vessel that is underway in conditions of restricted visibility, what should you do
swat32
If you are operating a power driven vessel that is underway in condition of restricted visibility, you are expected to do the following: sound prolonged blasts every two minutes. If the vessel is underway but is not moving, it is expected to sound two prolonged blast every two minutes. When one hears any of the signal above, one is expected to reduce speed to the minimum that is needed to keep on course.
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3 years ago
Any change that alters a substance without changing it into another substance.
Ber [7]
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3 years ago
Which of the following would qualify as matter?
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Answer:

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Explanation:

6 0
3 years ago
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A 100 gram block is placed on a scale that is known to have a 12% error. What will the scale read?
sesenic [268]

The scale will read <u>112 grams.</u>

Why?

Since we already know the percent error of the scale (12%) and we also know the mass of the block that is placed on the scale, we can calculate what will be the read of the scale by using the following formula:

ScaleRead=100g+(100g*\frac{12}{100})=100g+(100g*0.12)=100g+12g\\\\ScaleRead=112g

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Let's verify that we are right by using the following formula to verify if the obtained value for the scale read will be 12%:

PercentError=\frac{ActualValue-RealValue}{RealValue}*100=\frac{112g-100g}{100g}*100\\\\PercentError=\frac{12g}{100g}*100=0.12*100=12(percent)

Hence, we can see that the scale will read <u>112 grams.</u>

Have a nice day!

7 0
4 years ago
1. Which of the following rules determines the charge on a monatomic Ion formed from a nonmetal?
d1i1m1o1n [39]
1. Which of the following rules determines the charge on a monatomic Ion formed from a nonmetal?C. 8 - group number

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4 years ago
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