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Greeley [361]
3 years ago
7

What is science?

Chemistry
1 answer:
nikdorinn [45]3 years ago
4 0
A body of knowledge and a process of gaining that knowledge
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The Nuremberg War Crimes trials established
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The Nuremberg War Crimes trials established the international legal precedent that individuals who violate human rights can be held responsible for their actions. The correct option in regards to all the options given in the question is option "2". The Nuremberg trials were held against the Germans by the Allied forces against the war crimes done by the Germans during World War II. Many of the allied countries were in favor of killing the war criminals before any trial, but ultimately the trial was held and the criminals were either hanged to death of were killed by the firing squad.


7 0
4 years ago
HELP CHEMISTRY PLEASE I BEG U 25 POINTS
andrew-mc [135]

Answer:

The correct answers are given below

Explanation:

1 An increase of one in atomic number and no change in the mass number.

2 All the above statements are correct.

3  A decrease of one in atomic number and a decrease of four in mass number.

4 Have a high neutron to proton ratio.

7 0
3 years ago
Which of these describes “Al”?
Leya [2.2K]

Explanation:

Aluminium is Al on the periodic table.

But is this the complete question

4 0
3 years ago
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Which rock is most likely to be to be damaged by acid rain
IgorLugansk [536]

Answer:

Limestone

Explanation:

3 0
4 years ago
Read 2 more answers
Magicians often use ‘flash powder’ in their acts. Flash powder contains 69.0% potassium chlorate (31.9% K, 28.9% Cl, 39.2% O) an
mafiozo [28]

Answer:

\rm K: approximately 22.0\%.

\rm Cl: approximately 19.9\%.

\rm O: approximately 27.0\%.

\rm Al: 31.0\%.

Explanation:

Consider a 100\; \rm g sample. There would be 69.0\% \times 100\; \rm g = 69.0\; \rm g of \rm KClO_{3} and 100.0\; \rm g - 69.0\; \rm g = 31.0\; \rm g of \rm Al.

Out of that 69.0\; \rm g of \rm KClO_{3}:

31.9\% (by mass) would be \rm K: 31.9\% \times 69.0\; \rm g \approx 22.0\; \rm g.

28.9\% (by mass) would be \rm Cl: 28.9\% \times 69.0\; \rm g \approx 19.9\; \rm g.

39.2\% (by mass) would be \rm O: 39.2\% \times 69.0\; \rm g \approx 27.0\; \rm g.

Overall, the composition (by mass) of each element in this mixture would be:

\rm K:

\begin{aligned} & \frac{31.9\% \times 69.0\; \rm g}{100\; \rm g} \\ =\; & 31.9\% \times 69.0\% \\ \approx \; & 22.0\%\end{aligned}.

\rm Cl:

\begin{aligned} & \frac{28.9\% \times 69.0\; \rm g}{100\; \rm g} \\ =\; & 28.9\% \times 69.0\% \\ \approx \; & 19.9\%\end{aligned}.

\rm O:

\begin{aligned} & \frac{39.2\% \times 69.0\; \rm g}{100\; \rm g} \\ =\; & 39.2\% \times 69.0\% \\ \approx \; & 27.0\%\end{aligned}.

\rm Al:

\begin{aligned}& \frac{100\; \rm g - 69.0\; \rm g}{100\; \rm g} \\ =\; & 100\% - 69.0\% \\ =\; & 31.0\%\end{aligned}.

7 0
3 years ago
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