Paper 1 February/March 2021 CHEMISTRY (9701/12) IGCSE
Cambridge
AS & A Level
Chemistry (9701)
خرداد
2021
شامل مباحث:
تعداد سوالات: 30
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه
پیش نمایش صفحه اول فایل
Oxygen has three stable isotopes, $^{16}$O, $^{17}$O and $^{18}$O. All three isotopes are present in a sample of oxygen gas, O$_2$, which was analysed using a mass spectrometer.
How many peaks associated with the O$^+_2$ ion would be expected?