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Bad White [126]
3 years ago
6

Will mark first correct answer brainliest

Chemistry
1 answer:
olganol [36]3 years ago
5 0

Answer:

it does not show the actual number of atoms in that molecule

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On which of the following objects will the earth exert a greater gravitational pull than on a baseball?
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Answer:

b.

Explanation: brainliest

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Please help!!!! ⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️
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Polyatomic ions: CH_3COO^-, NO_3^-, NH^+, CN^-, Li^+, and OH^-

Monatomic ions: Ca^{2+, O^{2-, and Fe^{3+

<h3>Monoatomic vs Polyatomic Ions</h3>

In chemistry, monoatomic ions are ions that consist of only a single type of atom. They are usually positive or negatively charged and are otherwise known as simple ions. Examples include  Ca^{2+, O^{2-, and Fe^{3+

Polyatomic ions, on the other hand, are ions that consist of more than one atom, unlike monoatomic ions. The two or more atoms are covalently bonded and the entire structure behaves like a single chemical entity in reactions. Polyatomic ions are otherwise known as molecular ions.

Examples of polyatomic ions are  CH_3COO^-, NO_3^-, NH^+, CN^-, Li^+, and OH^-

Thus, from the diagram:

  • Polyatomic ions: CH_3COO^-, NO_3^-, NH^+, CN^-, Li^+, and OH^-
  • Monatomic ions: Ca^{2+, O^{2-, and Fe^{3+

More on ions can be found here: brainly.com/question/14982375

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1 year ago
For each pair of gases, select one that most likely has the highest rate of effusion. Use the periodic table if necessary
brilliants [131]
You will do the highest one i think
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Solid chromium (III) reacts with oxygen gas to form solid Cr2O3. What is this type of reaction?
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.081 g of O2

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How many moles are in 9.8 grams of calcium?
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<span>when the number of moles Ca = mass of Ca / molar mass of Ca.

and we can get the molar mass of Ca, it is = 40 g/mol

and we have already the mass of Ca (given) = 9.8 g

so, by substitution: the moles Ca = 9.8 g / 40 g/mol

                                                       = 0.245 moles</span>
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