Mass spectrometry is more often applied to molecules than to atoms. We will see in Chapter that the molecular weight of a molecule is the sum of the atomic weights of the atoms in the molecule. The mass spectrum of H is taken under conditions that prevent decomposition into H atoms. The two naturally occurring isotopes of hydrogen are H (atomic mass = 1.00783 amu; abundance 99.9885%) and H (atomic mass = 2.01410 amu; abundance 0.0115%). How many peaks will the mass spectrum have? Give the relative atomic masses of each of these peaks. (c) Which peak will be the largest, and which the smallest?

See explanation

Explanation:

There will be three peaks. The relative masses of each of the peaks is shown below;

1H - 1H peak will have a mass of 2*1.00783 amu = 2.01566 amu

1H -2H peak will have a mass of 1.00783 amu + 2.01410 amu = 3.02193 amu

2H - 2H peak will have a mass of 2*2.01410 amu = 4.0282 amu

The 2H - 2H peak is the smallest while 1H - 1H peak is the largest.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance