Answer:
14
Explanation:
Atomic mass = protons + neutrons
6 + 8 = 14
Answer:
a straight neck flask to allow air to get in
Explanation:
I took the test eWe
An isotope is defined as an element that has the same number of protons as the common element but different number of neutrons. In this case, a beryllium atom has a molar weight of 10 amu. Thus, there are 4 protons and 6 neutrons. The nuclear symbol of Be-10 is 4 Be10
Molar mass of FE2O3=2(55.85)+3(16)=159.7
2.56g*1mol/159.7*2mol/1mol*55.85g/1mol=1.79g
I believe the answer is A (it was on another Brainly question as well).