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3 years ago

An ______ cannot be broken down into any other substance

Chemistry

2 answers:

frutty [35]3 years ago

8 0

Answer:

Element: A substance that cannot be decomposed into simpler substances by ordinary chemical means. EXAMPLES: Gold, iron, carbon, hydrogen, oxygen, nitrogen.

Explanation:

QveST [7]3 years ago

6 0

Answer:

an atom cannot be broken down

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Why are the offspring produced by sexual reproduction different than their parents?

Arada [10]

Answer:

Offspring inherit different amounts of DNA from both their parents?

Explanation:

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3 years ago

Im named after the person who created the 1st periodic table. Who am i ?

icang [17]

I think it's dimitri

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3 years ago

A toothpaste contains sodium fluoride (NaF) What percentage of Fluoride is present.(4cs)

MariettaO [177]

Answer:

45.2%

Explanation:

To calculate the percent of an element in a compound we divide the molar mass of the element by the compound and multiply that by 100

First lets find the molar mass of Fluoride

Looking at the periodic table Fluoride has a molecular mass of 18.998 g

Now we need to find the molecular mass of NaF

Looking at a periodic table, Sodium (Na) has a molecular mass of 22.990g and Fluoride has a molecular mass of 18.998 so NaF has a molecular mass of 22.990(1) + 18.998(1) = 41.988g

Now we divide the mass of fluoride by the mass of sodium fluoride and multiply that by 100 to find the percentage of fluoride that is present in NaF

Mass of Fluoride = 18.998g

Mass of Sodium Fluoride = 41.988g

Percentage of fluoride present in NaF = (18.998g / 41.988g) * 100 = 45.2%

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3 years ago

Write a food chain in which the hawk is a secondary consumer:

KATRIN_1 [288]

Answer:

Food chain - Frog ---> Snake ---> Hawk

Hope this helps!

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3 years ago

Read 2 more answers

P−aminobenzenesulfonic acid (sulfanilic acid) is normally written in the form shown but its zwitterionic form is more stable. wr

polet [3.4K]

Zwitterion is an ion consists of equal positive and negative charges on the same molecule which make it more stable and has high melting point
p-aminobenzene sulfonic acid contains both acidic (-SO₃H) and basic groups (NH₂), the acidic group will lose one proton to give (-SO₃⁻) and the basic group will gain this proton to give (-NH₃⁺)
The structure is:

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3 years ago