Question 3 of 10 Which of the following is the best definition of a chemical change?
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O A. A change in a substance where one or more new substances form
O B. A change in a substance where no new substance forms
O C. A change in a substance where energy is conserved
О
D. A change in a substance where a phase change occurs
SUBMIT

A change in a substance where one or more new substances form

Explanation:

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm