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densk [106]
3 years ago
11

Chopping onions makes you cry because when you cut into an onion you break its cells. this releases sulfenic acids, which lead t

o the production of a powerful gas called propanethiol sulfur oxide. when this gas reaches your eyes, it reacts with the water in your tears to produce sulfuric acid.
Chemistry
1 answer:
ruslelena [56]3 years ago
8 0
Whats the question ?
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Hammerhead sharks have weakly-muscled gills and must be in constant motion in the ocean in order to maintain a steady flow of wa
tresset_1 [31]
I’m pretty sure it is obtaining oxygen
6 0
3 years ago
a solution has a volume of 2.0L and contains 36.0 g of glucose. If the molar mass of glucose is 180 g/mol, what is the morality
lilavasa [31]
Find moles: 
<span>36.0 g of glucose divided by 180 g/mol = 0.200 moles of glucose </span>


<span>find molarity: </span>
<span>0.200 moles of glucose / 2 litres = 0.100 Molar solution </span>
3 0
3 years ago
How many hydrogen atoms are in 89.5 g of<br> C6H6 ?<br> Answer in units of atoms.
Elodia [21]

Solution :

Molar mass of C_6H_6 is :

M = 6×12 + 6×1 g

M = 78 g

78 gram of C_6H_6 contains 6.022 \times 10^{23} molecules.

So, 89.5 gram of C_6H_6 contains :

n = 6.022 \times 10^{23} \times \dfrac{89.5}{78}\\\\n = 6.91 \times 10^{23}

Now, from the formula we can see that one molecule of C_6H_6 contains 2 hydrogen atom . So, number of hydrogen atom are :

h = 2\times 6.91 \times 10^{23}\\\\h = 1.38 \times 10^{22}\ atoms

Hence, this is the required solution.

8 0
3 years ago
Define significant figure. Discuss the importance of using the proper number of significant figures in measurements and calculat
anastassius [24]

Explanation:

Significant figure is the measure of how accurately something can be measured. It carries meaning contributing to its measurement resolution. It is important to use proper number of significant figures to get a precise measurement. For example, if we use a meter stick then measurements like 0.874 meters, or 0.900 meters, are good because they indicate that we can measure to the nearest millimeter. Whereas a measurement like 0.8 does not tell that a meter stick can measure to the nearest millimeter.

7 0
3 years ago
Why do you Think you weight less on Uranus than earth even though it is more massive planet ? 
Phantasy [73]

Answer:

You would weigh less on Uranus than on Earth because Uranus is far less mass-ive and dense than the Earth. This means that there is less gravity. Therefore, you would weigh less.

Explanation:

Even though Uranus is bigger, it is less massive; that is, there is less mass that makes up the planet. The volume of the planet might be larger, but the actual amount of mass isn't.

By the way, you couldn't stand on Uranus. It's made of gas!

7 0
3 years ago
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