Matt has four samples of substances:
sample a: 8 ml of hydrogen gas
sample b: 5 ml of helium gas
sample c: 5 ml of oxygen gas
sample d: 8 ml of helium gas
which of the following samples have the same density?
o sample a and sample b
sample a and sample d
sample b and sample d
sample b and sample c

Sample B and D

Explanation:

The Density of an object is simply a characteristic property of the object and it depends absolutely on the mass of the object and the volume of object.

The density of an object will remain the same as long as the mass of the object does not change in relation to it's volume.

Helium gas has a molar mass of 4g/mol and will displace its own volume when placed in any sample.

Since sample B and D contains the same mass of helium gas, therefore, sample B and D contains the same volume of helium and this in turn implies that both samples will have the same density.

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.