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klemol [59]
3 years ago
6

What device has made car emissions much cleaner?

Chemistry
1 answer:
Ket [755]3 years ago
7 0

Answer:

automatic transmission

Explanation:

An automatic transmission (sometimes abbreviated to auto or AT) is a multi-speed transmission used in motor vehicles that does not require any driver input to change gears under normal driving conditions.

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Calculate the work done when a force of 4 N pulls a box along the floor for a distance of 0.3 m.
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Answer:

<h2><em>1</em><em>.</em><em>2</em><em> </em><em>Joule</em></h2>

<em>sol</em><em>ution</em><em>,</em>

<em>Force=</em><em>4</em><em> </em><em>N</em>

<em>Distance</em><em>=</em><em>0</em><em>.</em><em>3</em><em> </em><em>m</em>

<em>Now</em><em>,</em>

<em>work = f \times d \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 4 \times 0.3 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 1.2 \: joule</em>

<em>hope</em><em> </em><em>this </em><em>helps</em><em>.</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em><em>.</em><em>.</em>

8 0
4 years ago
Determine how many significant figures are in each measurement.(9pts)
Strike441 [17]
1. 3 significant figures
2. 5 significant figures
3. 3 significant figures
4. 4 significant figures
5. 5 significant figures
6. 2 significant figures
7. 4 significant figures
8. 1 significant figure
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5 0
3 years ago
explain why it is a common laboratory procedure to heat analytical reagents and store them in a dessicated atmosphere (a sealed
Readme [11.4K]

Explanation:

Most reagent forms are going to absorb water from the air; they're called "hygroscopic".  Water presence can have a drastic impact on the experiment being performed  For fact, it increases the reagent's molecular weight, meaning that anything involving a very specific molarity (the amount of molecules in the final solution) will not function properly.

Heating will help to eliminate water, although some chemicals don't react well to heat, so it shouldn't be used for all.  A dessicated environment is simply a means to  "dry."  That allows the reagent with little water in the air to attach with.

6 0
3 years ago
What is the difference between docosahexaenoate (DHA) and 19,20-dihydroxydocosapentaenoate (19,20-DHDP)? Only DHA is a polyunsat
andrew11 [14]

Answer:

Explanation:

The correct answer is 19, 20 DHDP is more polar than DHA. This is as a result of the presence of two hydroxyl groups.

4 0
4 years ago
Relationship between galactose and mannose​
BartSMP [9]

Answer:

Mannose is a simple sugar or monosaccharide that is found as part of some polysaccharides in plants and in some animal glycoproteins. Galactose is converted to glucose in the liver to serve as fuel for cells in the body.

Explanation:

6 0
3 years ago
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