Which element has 38 electrons, is found in group 2, period 5? Fun fact: This element gives us the bright red colors in fireworks!

How many moles of iron are present in 3.15 x 1023 atoms of iron?

What is the significance of a standard system of measurement? A. scientists come from different cultural backrounds B. scientists from around the world need a way to share data they can all understand C.

How are humans releasing carbon dioxide into the air?

Although cotton and wool are natural fibers, their production uses large quantities of water and other resources. Synthetic materials require chemical processes, but offer several advantages over natural fibers.

Who was the heavy hydrogen discoverer?

How do i give the number of significant figures in 0.0037 mm

Which of these are ionic compounds?

Which property can be defined as the ability of a substance to be hammered into thin sheets

Select the group of organelles that is common to both plant cells and animal cells. A. nucleus, cytoplasm, ribosomes, chloroplasts B. cell wall, ribosomes, cell membrane, mitochondria C. cytoplasm, mitochondria, cell wall, nucleus D.

A compound is found to have a composition of 70.4% carbon and 29.6% hydrogen, by mass. what is the empirical formula for the compound?