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zysi [14]
3 years ago
14

A chemical change occurs when

Chemistry
1 answer:
Zolol [24]3 years ago
4 0

Answer:

C

Explanation:

salt deposits form from evaporated seawater.

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In balancing the nuclear reaction 7535Br → E + 01e, the identity of element E is ________. In balancing the nuclear reaction Br
nordsb [41]

<u>Answer:</u> The element E is Krypton (Kr).

<u>Explanation:</u>

In a nuclear reaction, the total mass and total atomic number remains the same.

The given nuclear reaction follows:

_{35}^{75}\textrm{Br}\rightarrow ^{A}_{Z}\textrm{X}+^0_{-1}\textrm{e}

  • <u>To calculate A:</u>

Total mass on reactant side = total mass on product side

75 = A + 0

A = 75

  • <u>To calculate Z:</u>

Total atomic number on reactant side = total atomic number on product side

35 = Z + (-1)

Z = 36

The isotopic symbol of element E is _{36}^{75}\textrm{Kr}

Hence, the element E is Krypton (Kr).

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4 years ago
Which gas effuses faster at the same temperature: molecular oxygen or atomic argon?
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The one with the lower atomic/molecular mass
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When ethane (C2H6) burns, it produces carbon dioxide and water:
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When 2 moles burn 6 moles of O2 is produced !

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