D.Richer scale
Definition: Richter scale is a quantitative measure of an earthquake's magnitude (size)
Magnesium and fluorine reacts in 1:2 ratio because:
- Magnesium (Mg) has 2 valance electrons.
- Fluorine (F) is a halogen and thus, requires only one electron.
- 1 atom of magnesium reacts with 2 atoms of fluorine to form a ionic compound with ionic bond.
Calcium belongs to the same group as Magnesium, and also has 2 valance electrons. Thus, it can also react with Fluorine in the same manner.
Hence, the answer is Calcium.
brainly.com/question/11156152
They are the little round things on er so that is ribosome
Answer:
C₅H₁₂.
Explanation:
- The hydrocarbon is burned in excess of oxygen to give CO₂ and H₂O.
- <em>The no. of moles of CO₂ produced = mass/molar mass </em>= 1.53 g/44.0 g/mol = <em>0.03477 mol.</em>
<em>Which is corresponding to 0.03477 mol of C.</em>
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- <em>The no. of moles of H₂O produced = mass/molar mass</em> = 0.756 g/18.0 g/mol = <em>0.042 mol.</em>
<em>which corresponds to (0.042 x 2) = 0.084 moles of hydrogen.</em>
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- The ratio of the number of moles of hydrogen to carbon in the composition of the compound will be 0.084 / 0.03477 = 2.4 = 12/5.
- <em>Therefore, the empirical formula of the compound under consideration is C₅H₁₂.</em>
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It may move around or did never changes
