From left to right across a row on the periodic table, what change is occurring within the atomic nuclei? a) A neutron is lost
b) An electron is gained
c) A proton is gained
d) The electron cloud size is decreasing

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe