Is bromine a impure substance?

Nitrogen gas (N2) and hydrogen gas (H2) combine to form ammonia (NH3). Which equation correctly represents this reaction? A. N + H → NH B. 2N2 + H2 → 3NH3 C. 2NH → N + 3H2 D. N2 + 3H2 → 2NH3

Nitrogen gas was collected by water displacement. What was the pressure of the N2 collected if the temperature was 50 degrees celcius?

Which of the following describes the electron sharing between hydrogen and fluorine? A. Hydrogen shares one electrons, while fluorine shares seven electrons. B. Hydrogen shares seven electrons, while fluorine shares one electrons. C.

Which of the characteristics below best describes organic compounds

Where is the word "salary" derived from? This is a question on my science homework, so I'm assuming it's science related.

What is the chemical formula of a compound that is composed of the ions Ca2 + and br-

What element is likely to form an ionic compound with chlorine?

Will a parachute slow a skydiver more at a very high altitude or a lower altitude?

Carbon monoxide is: Only found in large cities An odorless, colorless, toxic gas Healthy to breath in A danger when driving on the open highway

What is a potential benefit of fuel cell cars? increased efficiency converting gasoline to energy no recharging necessary decreased automobile cost larger engines