When massing a sample there are two techniques that can be used. The first is the Direct Technique which allows you to get both the mass of a sample and its container. The second is the Technique which allows you to only see the mass of the sample.

Tare

Explanation:

The correct word to fill the gap would be 'tare'.

In tare technique of weighing, the container is first placed on the weighing balance and its weight is zeroed by pressing the tare button on the weighing balance. Thereafter, the sample whose weight is to be determined is carefully placed in the container while still on the weighing balance. This will allow one to only see the mass of the sample.

its mg hope this

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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