3 years ago

Where does can valuable mineral deposits,such as gold, form

Chemistry

2 answers:

Gnoma [55]3 years ago

6 0

In rivers or in mines

kvv77 [185]3 years ago

5 0

In rivers , mines , mountains

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Explanation:

Step 1: Given data

Mass percent of element X in X(NO₃)₂: 52.55%

Mass of the element X in the sample: 67.50 g

Step 2: Determine the total mass of the sample

The mass percent of element X in X(NO₃)₂ is 52.55%, that is, there are 52.55 g of X every 100 g of X(NO₃)₂. Then, the mass of X(NO₃)₂ that contains 67.50 g of X is:

67.50 g X × 100 g X(NO₃)₂/52.55 g X = 128.4 g X(NO₃)₂

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