A gas that produces a "pop" with a burning splint is carbon dioxide. true or false

Chemistry

1 answer:

Ksivusya [100]2 years ago

7 0

False, a gas that produces a pop is hydrogen
Hope this helped :)

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Is conversating a word? I am trying to prove a point to my friend that conversate is not a word

Andru [333]

Conversating and conversate are actual words

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3 years ago

A sample of a compound made entirely from copper and oxygen was found to have a total mass of 0.143 g the mass of copper in the

tensa zangetsu [6.8K]

Mass of Oxygen: 0.0159 grams

Moles of Oxygen: 9.94x10^-4

To find the mass of oxygen, subtract the mass of copper from the total mass.

$0.143-0.1271=0.0159$

There are 0.0159 grams of Oxygen.

To find how many moles there are, divide the given amount of oxygen by the molar mass (atomic mass) of oxygen because that mass is the same as one mole of oxygen.

Molar mass of Oxygen: 16.00

$0.0159/16.00=9.94*10^{-4}$

There are 9.94*10^-4 moles of Oxygen.

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10 months ago

If you can answer as many of these as possible that would be great, will give thanks, 5 stars, and brainliest :)

alexandr1967 [171]

Answer:

The nucleus of the atom as suggested by "nuclear" chemistry.
Radioactive element are generally very large due to both their high number of protons, neutrons, and electrons.
An excessive amount of protons or neutrons.
Periodic table, table O, and table N.
Personal opinion question.
The atomic number.
It represents the number of protons, and can also represent the number of electrons in a neutral atom (an atom with no charge).
Protons ---- element.
Random, self-generated.
Gamma radiation is the only thing on table O that is mass less. Close to being the same is Beta particles which have almost no mass.
Neutrons and Gamma radiation.
Gamma radiation.
Electrons and Beta particles.
To turn one element into the isotope of another. Yes, I believe it is aptly named because you are changing the identity of the element.
The number of protons because they are what define the identity of an element.

Goodluck!

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2 years ago

The minimum energy required to start a reaction

sergeinik [125]

The answer to that question would be Activation energy. If would like me to elaborate just let me know. :)

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2 years ago

Read 2 more answers

Calculate the PH if the Poh is 8.00

Neporo4naja [7]

PH + pOH = 14
pH + 8 = 14
pH= 6

8 0

2 years ago