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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Ca(OH)2 + H3PO4 = Ca3(PO4)2 + H2O

larisa [96]

Make a quick chart with each element represented, and count them up. HINT - leave the polyatomic anions together - in this case, PO4

Left Right
1 Ca 3
2 O 1
5 H 2
1 PO4 2

Begin by balancing like finding common denominators of fractions - apply to both sides:
I started by adding a 2 in front of H3PO4 on the left, them 6 in front of H2O on the right. Last, a 3 in front of Ca (OH)2. Then, re-count using the chart format to make sure you're right.

3Ca(OH)2 + 2H3PO4 = Ca3(PO4)2 + 6H2O

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2 years ago

What is the molecular weight (rmm) of NaOH? 40 20 50 60

Molodets [167]

Answer: A/40 it is actually 39.997 but since that is not an answer they rounded up

Explanation:

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Sodium ethanoate ? --> solid sodium ethanoate

timurjin [86]

I’m pretty sure it craters sodium acetate

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3 years ago

The mass spectrum of an unknown compound has a molecular ion peak with a relative intensity of 57.10% and an M+1 peak of 6.83%.

max2010maxim [7]

There are 11 Carbon atoms in the compound.

Solution:

Carbon atom count is the ratio of the M peak to the M+1 peak.

$\text{ Number of Carbon atoms }=\frac{\text { Relative intensity of } M+1 \text { peak }}{0.011 \times \text { Relative tntensity of } M \text { peak }}$

Here M peak is 57.10% and M+1 peak is 6.83%. On applying the values in the formula we get,

$\frac{0.0683}{0.011\times0.571g} = 10.87\approx11$

Therefore, the number of Carbon atoms in the compound are 11.

Refer the image attached below for a better understanding of M peak and M+1 peak.

The heaviest ion that has the greatest m/z value is said to be the molecular ion peak in mass spectrum.

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Describe the differences between bonding in an ionic compound and bonding in a covalent molecule.

Fudgin [204]

a covalent bond and an ionic bond. An ionic bond if formed from the transfer of electrons from the outer shell of atoms. ... An example of this is NaCl, where the sodium atom becomes Na+ due to the loss of electrons, and the chlorine atom becomes the negatively charged chloride (Cl-).

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2 years ago