Answer:
3270m
Explanation:
1 minute= 109m
so
30 minutes= 109 × 30 = 3270m
(whatever you do on one side you have to do to the other)
hope this helps :)
Answer is #4 (neutrons)
Explanation:
Total mass before the reaction is 236 amu. The total mass of the two elements is 233 amu. This means that there are 3 amus carried by element X. Looking at the total atomic number of the two elements after reaction, it's 92, the same as the one at the beginning. This means that element X has zero atomic number, which could only be a neutron.
31
I think. Protons and electrons share the same number as well as the atomic number.
Answer:
I think it should be Carbon.
Answer:ThE aNsWeR iS B
Explanation: The earth was one a big ocean but than volcanoes explode and that created land :)
