well i think what you do first is that you would divide that number of amu by 6.02 x 10^23 and that will get you the number of moles of H2. once you have the number of moles you divide the number of moles by the molar mass of H2 and that should give you the grams. i’m trying to explain this as best as possible sorry if ur still confused.
B) Energy will be converted into another form
C) Energy will be consumed
*THIS IS NOT PART OF A TEST, I GOT THE ANSWER WRONG AND WANT TO KNOW THE RIGHT ONE*
the sun makes them turn brown or dry and die
Answer:
Because it will go back to water when it rains
Explanation:
-2
B.
-1
C.
+1
D.
+2
When a calcium atom loses two electrons, it becomes positively charged because it has more protons than electrons. In this case, since two electrons are lost, the calcium ion has a charge of +2.
When an atom loses or gains electrons, it undergoes a process called ionization, resulting in the formation of an ion. In the case of calcium (Ca), it typically loses two electrons to achieve a more stable electron configuration.
A neutral calcium atom has 20 electrons, with the electronic configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s². By losing its two outermost electrons from the 4s orbital, it forms a calcium ion (Ca²⁺) with 18 electrons.
The loss of two negatively charged electrons leaves the calcium ion with a net positive charge. The charge on an ion is indicated by a superscript after the ion symbol. In this case, the superscript is +2, denoting that the calcium ion has a charge of +2.
Hence, the correct answer is +2.
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