Questions by JohnnyFeng5

0 votes

1 answer 55 views

How can we determine the concentration of fluoride ions in a given solution using an ion-selective electrode?

asked Jan 29 in Analytical Chemistry

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1 answer 48 views

A student wants to find the enthalpy change of a chemical reaction using Hess's Law, but the only information provided is the enthalpy change of two other reactions. Design an experiment to determine the enthalpy change of the unknown reaction using the given data and Hess's Law.

asked Jan 22 in Chemical reactions

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1 answer 32 views

What is the contrast effect?

asked Jan 20 in Psychology

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1 answer 22 views

Minerals that are not pure elements are made of what?

asked Dec 31, 2024 in Science

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