3 years ago

When do we classify a disease as pandemic

Chemistry

1 answer:

miv72 [106K]3 years ago

4 0

Answer:

example ☝

a pandemic is a situation when people of suffering from the following disease is large in number or the cases are in larger number and it is

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3 years ago

66.41 g of Copper [Cu] are combusted with 8.56g of Oxygen [O] to produce a

MrMuchimi

The empirical formula of the compound : Cu₂O

<h3>Further explanation</h3>

Given

66.41 g Cu

8.56 g O

Required

The empirical formula

Solution

1. Find mol

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mol = mass : Ar

mol = 66.41 : 63.5

mol = 1.046

O(Ar=16 g/mol)

mol = 8.56 : 16

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Explanation:

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