Carbon, hydrogen, silicon, nitrogen, sulfur, and phosphorus are the six most important elements found in living things.

1 answer:

8 0

false

All organic compounds in nature have one molecule that is common in all of them, namely carbon.An organic compound is any member of a large group of compounds which may be gaseous, liquid, or solid that have molecules containing carbon.Organic compounds are the basis of earth's carbon cycle through which biogeochemical processes ensure that carbon moves from living to non living systems and back again.Examples of organic compounds include proteins, carbohydrates, lipids, nucleic acids, diamond and graphite.

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Write the net ionic equation for this precipitation reaction. Include physical states. ( NH 4 ) 2 CO 3 ( aq ) + Ca ( ClO 4 ) 2 (

Bad White [126]

Answer:

The net ionic equation:

$Ca^{2+}(aq)+CO_{3}^{2-}(aq) \rightarrow CaCO_{3}(s)$

Explanation:

The given chemical reaction is as follows.

$(NH_{4})_{2}CO_{3}(aq)+Ca(ClO_{4})_{2}(aq) \rightarrow CaCO_{3}(s)+2NH_{4}ClO_{4}(aq)$

The total ionic equation is as follows.

$2NH_{4}^{+}(aq)+ CO_{3}^{2-}(aq)+Ca^{2+}(aq)+2ClO_{4}^{-}(aq) \rightarrow CaCO_{3}(s)+2NH_{4}^{+}(aq)+2ClO_{4}^{-}$

Similar ions on the both sides of the reaction will be cancelled.

The remaining reaction is

$Ca^{2+}(aq)+CO_{3}^{2-}(aq) \rightarrow CaCO_{3}(s)$

Therefore, the net ionic reaction is as follows.

$Ca^{2+}(aq)+CO_{3}^{2-}(aq) \rightarrow CaCO_{3}(s)$

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4 years ago

How many protons and neutrons does nitrogen-14 have?

zhenek [66]

Answer:

7 protons

Isotopes are atoms that have the same number of protons but different numbers of neutrons in the nucleus. You know that nitrogen-14 has 7 protons in the nucleus because it is an isotope of nitrogen, which has an atomic number equal to 7 .

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4 years ago

The conversion of nitrogen gas to compounds useful to crops is called nitrogen compounding.

Nastasia [14]

False. The nitrogen conversion into a compound by light or bacteria is called nitrogen fixing, or processing in any case.

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3 years ago

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The pressure exerted by a gas on its container is inversely related to its Kelvin temperature

Lelu [443]

False, as pressure increases, temperature increases, given that other factors stay the same.

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3 years ago

A chemist requires 0.752 mol na2co3 for a reaction. how many grams does this correspond to?

Sliva [168]

79.70 grams First, calculate the molar mass of Na2CO3 by looking up the molar mass of the elements used in it. Sodium = 22.989769 Carbon = 12.0107 Oxygen = 15.999 Multiply each molar mass by the number of atoms used, and sum the results to get the molar mass 2 * 22.989769 + 12.0107 + 3 * 15.999 =105.9872 Finally, multiply the molar mass by the number of moles you need. 0.752 * 105.9872 = 79.7024 grams

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3 years ago