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Assoli18 [71]
3 years ago
14

Which best categorizes the different types of air.

Chemistry
2 answers:
jeka57 [31]3 years ago
6 0
C lol i did that today
iragen [17]3 years ago
4 0

Answer:

B.

Explanation:

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Why do heat (q) and work (w) have positive values when entering a system and negative values when leaving?
Papessa [141]

Energy transferred into the system is wonderful due to the fact the system ends up with greater strength while energy transferred out from the machine is negative, because the device finally ends up with much less energy.

In defining work, we awareness at the outcomes that the system (e.g. an engine) has on its surroundings. for this reason we outline work as being fine when the gadget does work at the environment (strength leaves the machine). If work is completed at the gadget (energy added to the machine), the work is bad.

The classical sign convention states that warmth switch into a device and work produced with the aid of it are tremendous, while heat transfer faraway from a device and work produced on it is negative.

Q is wonderful if warmness is added into the device from the surroundings. The take a look at tube would feel cooler if the response had been being finished in one. If the surroundings is tormented by the machine, work is poor. This indicates that energy is escaping the system.

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2 years ago
The catalytic converter of a secondary air injection system converts the hydrocarbons and carbon monoxide to _______ and _______
forsale [732]

The catalytic converter of a secondary air injection system converts the hydrocarbons and carbon monoxide to carbon dioxide (CO2) and water (H2O). It is a fundamental part of a vehicle.

<h3>Catalytic converter and air injection systems</h3>

A catalytic converter refers to the device observed in a car and/or vehicle, which is used to remove different contaminant gases.

In general, the catalytic converter is placed close to the car engine and reduces the release of hydrocarbons.

In general, the air injection system is connected to the catalytic converter in order to provide useful oxygen required for oxidation reactions.

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8 0
3 years ago
9. Mangnesium can form compounds by acting with different oxidation numbers (2-, 3+, 4+, 6+, 7+). Argue your answer.
erastovalidia [21]
D is the right answer
6 0
3 years ago
You burn a 3.4 g cube of tofu to warm 12 g of water, which increases the temperature of the water 7 °C. How many calories of hea
Murrr4er [49]

Answer:

Water absorbs 84cal.

Explanation:

The given information about water is:

- mass of water (m): 12g

- change in temperature (ΔT): 7°C

With the given information, and the specific heat of water (c=1cal/g.°C), we can calculate the aeat that water absorbs, using the heat formula:

\begin{gathered} Q=m*c*\Delta T \\ Q=12g*1\frac{cal}{g*\degree C}*7\degree C \\ Q=84cal \end{gathered}

So, water absorbs 84cal.

4 0
1 year ago
Electromagnetic waves vary in
Nataly_w [17]
I believe the answer is A. <span>wavelength and frequency. </span>
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4 years ago
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