Which list of elements contains only metals?

a. helium, carbon, gold

b. sodium, chromium, copper

c. iodine, iron, nickel

d. phosphorus, nitrogen, oxygen

The formula for dextrose is C6H1206. calculate the formula mass

I want to balance Fe2so4+H20

I don't understand periodic trends for ionization energy and atomic radius.

When electrons gain energy, what can they do? A. drop to a lower energy level B. move to a higher energy level

2. What have you heard about plate tectonics? I do not no

Arrange the following bonds in order of increasing polarity: O-H, C-H, F-H, H-H A) O-H B) C-H<0-H C) H-H D) C-H E) HH

How fast do p waves travel?

Calcule o calor especifico do estanho sabendo que foram necessarias 100 cal para elevar em 20ºC a temperatura de 100 g de estanho

The electric force between two charged objects is 0.24 newtons. If the distance between them is increased by a factor of 4, what will be the new force? A. 0.015 newtons B. 0.03 newtons C. 0.06 newtons D. 0.12 newtons E. 0.36 newtons

Why do you need a balanced equation for stoichiometry?