Khi hoá hợp 2,1 gam sắt với lưu huỳnh, ngoài tạo ra FeS còn toả ra 1 lượng nhiệt bằng 3,77 kJ. Hiệu suất phản ứng là 100%. Tính nhiệt tạo thành của FeS

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.