D. it’s volume would decrease
A ... No. Every element has an Atomic Number.
Helium's Atomic Number is 2.
It's Atomic Mass is 4.
B ... No. This isn't true for ANY element.
C ... Yes. This is true for EVERY element except Hydrogen.
D ... No. This is true for ONLY Hydrogen.
The ice melts mass is:
Heat gained by ice= mass(g) x 80 cal
( 1 cal = 4.184 *10^7er or g cm^2/ sec^2)
Assuming no loss in heat, in the motion so both continue with temperature 0~C
To find so the mass (gm) of ice melted
I am pretty sure that the following option which contains<span> an accurate statement is the third one represented above :</span>C. Step-up voltage transformers have a lower number of turns in the primary than in the secondary winding. This one looks the most suitable and the others just make no sense. Do hope it will help you.
I thank it's B hope it helped