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kolezko [41]
3 years ago
8

How does a smoke detector utilize radiation?

Chemistry
1 answer:
Schach [20]3 years ago
5 0
D. Beta radiation ionizes the air. When smoke
interacts with the ionized particles it causes the
alarm to sound.
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Write the correct IUPAC name for each of the following structures (3 marks per
a_sh-v [17]

Answer:

Methyl group

Explanation:

From the diagram shown, we can see that the family group CH3 is attached to the structure.

This is simply called a methyl group because it is derived from me than and written that way to show the direct bonding between carbon and the 3 hydrogen atoms.

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3 years ago
What is the correct formula for calcium nitride
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Ca3N2 is your answer<span> </span>
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3 years ago
The standard heat of formation for solid copper is zero. True False
Vlada [557]
The answer is false. 

3 0
3 years ago
Which type of model is a way of imagining how something works?​
RUDIKE [14]

Answer:

mental model is an explanation of someone's thought process about how something works in the real world. It is a representation of the surrounding world, the relationships between its various parts and a person's intuitive perception about his or her own acts and their consequences. Mental models can help shape behaviour and set an approach to solving problems (similar to a personal algorithm) and doing tasks.

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6 0
3 years ago
Read 2 more answers
A 453 g piece of glass at 25.7∘C is left outside on a sunny day. How much heat must the glass absorb from the sun in order to re
Tju [1.3M]

Answer:

Q = 5555.6J

Explanation:

Mass of glass piece, m = 453g

initial temperature = 25.7°C

temperature to be attained = 40.3°C

⇒change in temperature, Δt = 40.3 - 25.7 = 14.6°C

specific heat of glass, s = 0.840J/g°C

Heat absorbed, Q = msΔt

⇒Q = 453×0.840×14.6 = 5555.592J

⇒<u>Q = 5555.6J</u> (rounded to the nearest tenth)

7 0
3 years ago
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