PLZZZ HELP ! You are preforming an experiment to produce ammonia. In the lab, you need to produce 20g of ammonia. You are using the reaction: N2 + 3H2 ---> 2NH3
Your lab partner says that if you react 10g of nitrogen with 10g of hydrogen should produce the 20g of ammonia (NH3) you need is your lab partner correct Why or why not?

3. if the dartboard below is used to model an atom, which subatomic particles would be located at z?

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles