2 years ago

Which of the following is not found in the nucleus of an atom?

1 answer:

8 0

<span>The correct answer is the first option. Electron is not found in the nucleus of an atom. The sub-atomic particles of an atom are the proton, electron and the neutron. An electron has a charge of -1 and a smaller mass than a proton. Proton has the same mass with the neutron. The ratio between the mass of a proton and an electron is about 2000. An electron has an equal value but negative charge with the proton.</span>

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The atomic mass of an atom can be found by

sashaice [31]

The answer to this question is A

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2 years ago

What is the percent by mass of oxygen in al2o3 ?

Snezhnost [94]

mr oxygen= 16. 16 x 3= 48
mr Al2O3= 27 + 27 + 48= 102

(48/102) X 100%= 47.05% oxygen

4 0

3 years ago

Lets say you were doing an experiment on two different chemicals in two different test tubes. One chemical is giving off oxygen

boyakko [2]

Answer:

Tests for gases

Hydrogen, oxygen, carbon dioxide, ammonia and chlorine can be identified using different tests.

Hydrogen. A lighted wooden splint makes a popping sound in a test tube of hydrogen.

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hope it will help

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2 years ago

Which term best describes the role of hydrogen gas in the formation of a water molecule?

Alex Ar [27]

I believe the correct answer from the choices listed above is the last option. The term that would best describe the <span>role of hydrogen gas in the formation of a water molecule would be a reactant. Water has a formula of H2O where it contains water so it should be that hydrogen is a reactant. </span>

7 0

3 years ago

Read 2 more answers

A flask with a volume of 250.0 mL contains air with a density of 1.164 g/L. What is the mass of the air contained in the flask?

satela [25.4K]

Answer:

convert 250.0 mL in Liters :250. 0 / 1000 = 0,25 LDensity = 1.240 g/LMass

Explanation:

6 0

1 year ago