Answer:
0.05 g of H2O contain molecules
Answer:
Arsenic.
Explanation:
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In this case, since insecticides are substances that act as poisons to get rid of insects in order to prevent their presence and/or reproduction in houses, companies, crops and others, a substance that has been widely used is the metalloid arsenic due to its direct affection of the insect's body (movement, performance, cellular functions).
In addition, high levels of arsenic in food could cause arsenic poisoning in humans as well, that is why such practice must be properly performed and by using the correct security protocol.
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The percent by mass of hydrogen in the compound is found by doing: (12.3/210.3) x 100 = 6%
Hope this will help
Answer:
UVC > UVB > microwaves
Explanation:
Let's consider the following radiations with their ranges of wavelengths (λ).
The energy of a photon (E) can be calculated using the Planck-Einstein's equation.
E = h . c . λ⁻¹
where,
h is the Planck's constant
c is the speed of light
As we can see, <u>the shorter the wavelength, the more energy the photon has</u>. The rank from greatest to least energy is UVC > UVB > microwaves.
%C = 27.3%
%O=72.7%
<h3>Further explanation
</h3>
Proust states the Comparative Law that compounds are formed from elements with the same Mass Comparison, so that compounds have a fixed composition of elements
The empirical formula is the mole ratio of compounds forming elements.
MW CO₂ : 44 g/mol
Ar C = 12 g/mol
Ar O = 16
