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jenyasd209 [6]
3 years ago
12

Một hợp chất có phân tử gồm 1 nguyên tử nguyên tố X liên kết với 2 nguyên tử O và nặng hơn phân tử hiđro 23 lần. Tính nguyên tử

khối của X, cho biết tên và kí hiệu hóa học của nguyên tố
Chemistry
1 answer:
yuradex [85]3 years ago
6 0

Answer:

~mkoìx*dsßķķ*&;~;§(

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Analysis of skunk spray yields a molecule with 44.77% c, 7.46% h and 47.76% s by mass. what is the empirical formula for this mo
stiv31 [10]
Suppose we have 100 gr of the substance. Then by weight, it would contain 44.77 gr of C, 7.46 gr of H and 47.76 gr of S. We need to look up the atomic weights of these atoms; M_H=1, M_C=12, M_S=32. The following formula holds (where n are the moles of the substance, M its molecular mass and m its mass): n=m/M. Substituting the known quantities for each element, we get that the substance has 3.73 moles of C, 7.46 moles of H and 1.49 moles of S. In the empirical formula for the molecule, all atoms appear an integer amout of times. Hence, for every mole of Sulfur, we have 2.5 moles of C and 5 moles of H (by taking the moles ratios). Thus, for every 2 moles of sulfur, we have 5 moles of C and 10 moles of H. Now that all the coefficients are integer, we have arrived at an empirical formula for the skunk spray agent: C_5H_{10}S_2
4 0
4 years ago
Non-metal ions are negative because...
abruzzese [7]

Explanation:

its b cz the gain electrons i think

6 0
3 years ago
The half-life of krypton-91 (91Kr) is 10 s. At time t = 0 a heavy canister contains 7 g of this radioactive gas. (a) Find a func
Vlad1618 [11]

Answer:

misteri Cell ini quest ia half-life of beauty of misteri best, of Cell can't answer =

Explanation:

\sqrt[ \geqslant  { { | \geqslant  | \geqslant  \sqrt[ \gamma \% log_{ \tan( \sqrt[ < \pi \sqrt[ | \geqslant  \sqrt[ <  \leqslant  |x| ]{y} |  \times \frac{?}{?} ]{?} ]{?} ) }(?) ]{?} | | }^{2} }^{?} ]{ \sqrt[ <  \gamma  log_{ \frac{ | \geqslant y \sqrt[ |x \sqrt{ |?| } | ]{?} | }{?} }(?) ]{?} }

5 0
3 years ago
2. What effect does temperature have on the strength of a magnet?
DIA [1.3K]

Answer:

The more the temperature the less the effect if magnet

4 0
3 years ago
What will happen to the pressure when the temperature of a gas increases
Galina-37 [17]
Not guarenteed the answer, but as the temperature increases, the molecules in the gas move faster, impacting the gas's containor more frequently and exerting a greater force, according to Gay-Lussac's Law. I hope this helps you.
5 0
3 years ago
Read 2 more answers
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