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KiRa [710]
3 years ago
13

Why do onions make you cry?

Chemistry
1 answer:
Helga [31]3 years ago
3 0
When you cut an onion, it releases a gas, when mixed with certain enzymes in the onion, it creates a sulfur gas. These gases then get to your eyes and create a mild acid which irritates the eyes. Hope this helps, if you have any questions please feel free to message me ;)
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Substance X is a compound containing 632mg of manganese and 368mg of oxygen. Substance X is shown
defon

The empirical formula : MnO₂.

<h3>Further explanation</h3>

Given

632mg of manganese(Mn) = 0.632 g

368mg of oxygen(O) = 0.368 g

M Mn = 55

M O = 16

Required

The empirical formula

Solution

You didn't include the pictures, but the steps for finding the empirical formula are generally the same

  • Find mol(mass : atomic mass)

Mn : 0.632 : 55 = 0.0115

O : 0.368 : 16 =0.023

  • Divide by the smallest mol(Mn=0.0115)

Mn : O =

\tt \dfrac{0.0115}{0.0115}\div \dfrac{0.023}{0.0115}=1\div 2

The empirical formula : MnO₂

8 0
3 years ago
Which of these would be caused by a chemical change?
s2008m [1.1K]

Metamorphic rock forming from igneous.

3 0
3 years ago
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The statement “the scientific process is open ended” means:
mina [271]

Answer:

think it helps you

<h2>Explanation:</h2>

<em><u>The statement “the scientific process is open ended” means: Would an element with 7 valence electrons be more or less reactive than an element with 3 valence electrons? Element 1 is a hard dark-red solid</u></em>

4 0
3 years ago
Two atoms are bonded through the unequal sharing of electrons What kind of bond exists between the atoms?
amm1812

Answer:

Covalent Bond

Explanation:

Because of the unequal sharing of electrons, a covalent bond exists.

7 0
3 years ago
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What will the change in temperature be when 90 J are applied to 15 g of gold. (Cgold = 0.126 J/gºC)
luda_lava [24]

Answer:

48 °C

Explanation:

q = 90J

m = 15 g

C = 0.126 J/gºC

q = mct

90 = (15)(0.126)t

t = 47.62 °C = 48 °C

8 0
3 years ago
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