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Karolina [17]
3 years ago
13

Which is an example of an element?

Chemistry
2 answers:
strojnjashka [21]3 years ago
6 0
C.silver 
nacl is a compound of na and cl
h2o is a compound of 2h and o
electron is a particle in an atom

gavmur [86]3 years ago
3 0
The answer to this problem could be d-electron
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What is the mole ratio needed to determine the mass of phosphorus trifluoride produced from the reaction of 120 g of phosphorus
Vitek1552 [10]

Answer:

\frac{4molPF_3}{1molP_4}

Explanation:

Hello

In this case, given the reaction:

P_4(s)+6F_2(g)\rightarrow 4PF_3(g)

It means that since the coefficients preceding phosphorous and phosphorous trifluoride are 1 and 4, the correct mole ratio should be:

\frac{4molPF_3}{1molP_4}

Because given the mass of phosphorous it is convenient to convert it to moles and then cancel it out with the moles on bottom of the mole ratio.

Bes regards!

8 0
3 years ago
2. The atomic number of an atom comes from *
nlexa [21]
C. The number of protons
3 0
3 years ago
What parts of an atom can change during a nuclear reaction that cannot change during a chemical reaction? The number of neutrons
Tcecarenko [31]

Answer:

The number of protons and neutrons.

Explanation:

Neutrons and Protons can't be removed from nucleus from chemical reactions because they are held together super strong and tight. However, nuclear reactions are strong enough to separate them.

hope this helps :)

8 0
3 years ago
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sveticcg [70]

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4 0
3 years ago
Which statement is true for photosynthesis? A) producers use it B) Consumers use it C) Scavengers use it D) Decomposers use it
Lyrx [107]

Answer:

A) producers use it.

Explanation:

producers have to make their own food. so they use photosynthesis to make glucose for them to eat.

8 0
4 years ago
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