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marin [14]
3 years ago
10

What is the best thing to study in Antartica?  

Chemistry
2 answers:
Alla [95]3 years ago
6 0
The most basic is the weather and animals. But the soil and ice also tells about the past a lot.
Dvinal [7]3 years ago
5 0
The animals, climate, weather.
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What is the name of the product isotope formed when Radon-222 decays by alpha decay?
katrin2010 [14]

Answer: Radon-222 is generated in the uranium series from the alpha decay of radium-226, which has a half-life of 1600 years. Radon-222 itself alpha decays to polonium-218 with a half-life of approximately 3.82 days, making it the most stable isotope of radon. Its final decay product is stable lead-20

5 0
3 years ago
Read 2 more answers
The empirical formula of a compound is CH2O and its molecular weight is 90.09 g/mol. Determine the molecular formula.
Pachacha [2.7K]

Answer : The molecular formula of the compound will be, C_{3}H_{6}O_3

Explanation :

Empirical formula : It is the simplest form of the chemical formula which depicts the whole number of atoms of each element present in the compound.  

Molecular formula : it is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

For determining the molecular formula, we need to determine the valency which is multiplied by each element to get the molecular formula.

The equation used to calculate the valency is :

n=\frac{\text{molecular mass}}{\text{empirical mass}}

As we are given that the empirical formula of a compound is CH_2O and the molar mass of compound is, 90.09 gram/mol.

The empirical mass of CH_2O = 1(12) + 2(1) + 1(16) = 30 g/eq

n=\frac{\text{molecular mass}}{\text{empirical mass}}

n=\frac{90.09}{30}=3

Molecular formula = (CH_2O)_n=(CH_2O)_3=C_{3}H_{6}O_3

Thus, the molecular formula of the compound will be, C_{3}H_{6}O_3

7 0
4 years ago
What frequency corresponds to an absorption line at 502 nm?
wlad13 [49]
Answer is D absorption line at 502
4 0
4 years ago
What is the energy needed for a substance to change from a liquid state to a gaseous state?
pshichka [43]
Heat of vaporization (During which the temperature stays the same)
6 0
3 years ago
What is the mole ratio of N2 to H2 to NH3?
Alexeev081 [22]

Answer:

the answer is 1:3:2

Hope this helps, let me know if you need any other help, Stoichiometry is hard

4 0
4 years ago
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