Pb(NO3)2(aq)+H, SO,(aq) 2HNO3(aq) + PbSO4(s) a. Write the total ionic equation and the net ionic equation ​

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

1.solid

2.carbon dioxide

3.helium