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Nonamiya [84]
2 years ago
12

A test of an automobile engine’s exhaust revealed that 3.5 g of NO2 was emitted in 10. minutes of operation. How many moles of N

O2 would this engine release if it were used for a 40.-minute commute, assuming that this measured number is representative of the emission under all circumstances?
Chemistry
1 answer:
kherson [118]2 years ago
5 0

Answer:

0.304 moles of NO₂ may be produced

Explanation:

During 10 minutes of operation, 3.5 g of NO₂ were produced by the engine.

In 40 minutes, the engine may produce (40 . 3.5)/ 10 = 14 g of gas

Solved by a rule of three.

Let's convert the mass to moles → 14 g . 1 mol/ 46 g = 0.304 moles

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How are monosaccharides and polysaccharides structurally different? *NO PLAGIARISM PLS*
Mariana [72]

Explanation:

Monosaccharides are simple carbohydrates that cannot be further hydrolyzed to simpler carbohydrates. They contain between three and six carbon atoms per molecule.

Polysaccharides  are complex carbohydrates . They are condensation polymers derived from very long chains of monosaccharide units.

Structurally, polysaccharides are made up of repeating units of monosaccharides.

3 0
3 years ago
Read 2 more answers
Nitric acid (HNO3) is a strong acid that is completely ionized in aqueous solutions of concentrations ranging from 1% to 10% (1.
Alborosie

<u>Given:</u>

Concentration of HNO3 = 7.50 M

% dissociation of HNO3 = 33%

<u>To determine:</u>

The Ka of HNO3

<u>Explanation:</u>

Based on the given data

[H+] = [NO3-] = 33%[HNO3] = 0.33*7.50 = 2.48 M

The dissociation equilibrium is-

            HNO3   ↔    H+      +      NO3-

I            7.50               0                 0

C          -2.48          +2.48              +2.48

E            5.02            2.48              2.48

Ka = [H+][NO3-]/HNO3 = (2.48)²/5.02 = 1.23

Ans: Ka for HNO3 = 1.23

6 0
3 years ago
Why will a toy train remain still if you push on the engine with
netineya [11]

Explanation:

Because when two equal forces are applied from opposite directions, they "eliminate" each other.

The train would go right if a 3N force was only applied in the right direction, and it would go left if the same force was only applied to the left.

If a 3N force was applied to the right and a 2N force to the left, it would equal a 1N force to the right (3-2=1).

But there it's 3-3=0, so in practice the force is 0N. Therefore the train won't move.

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2 years ago
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lesantik [10]
I would say compression or the absence of heat because heating a liquid makes it a gas<span />
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3 years ago
True or false
Ivanshal [37]

Answer:

true because of the elements

4 0
3 years ago
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