Questions from General Chemistry

Q: For the cations listed in the left-hand column, give

For the cations listed in the left-hand column, give the formulas of the precipitates that would form with each of the anions in the right-hand column. If no precipitate is expected for a particular c...

Q: Tetraphenylporphyrin is a synthetic compound that resembles naturally occurring porphyrins. Porphyrins

Tetraphenylporphyrin is a synthetic compound that resembles naturally occurring porphyrins. Porphyrins are found in hemoglobin and cytochromes, which are important to biological functions in humans. T...

Q: On the basis of the general solubility rules given in Table 7

On the basis of the general solubility rules given in Table 7.1, predict the identity of the precipitate that forms when aqueous solutions of the following substances are mixed. If no precipitate is l...

Q: Phosphorus and chlorine form two binary compounds, in which the percentages

Phosphorus and chlorine form two binary compounds, in which the percentages of phosphorus are 22.55% and 14.87%, respectively. Calculate the empirical formulas of the two binary phosphorus–chlorine co...

Q: How does the molecular formula of a compound differ from the empirical

How does the molecular formula of a compound differ from the empirical formula? Can a compound’s empirical and molecular formulas be the same? Explain.

Q: A compound used in the nuclear industry has the following composition:

A compound used in the nuclear industry has the following composition: uranium, 67.61%; fluorine, 32.39%. Determine the empirical formula of the compound.

Q: A binary compound of boron and hydrogen has the following percentage composition

A binary compound of boron and hydrogen has the following percentage composition: 78.14% boron, 21.86% hydrogen. If the molar mass of the compound is determined by experiment to be between 27 and 28 g...

Q: A compound has been analyzed and has been found to have the

A compound has been analyzed and has been found to have the following composition: copper, 66.75%; phosphorus, 10.84%; oxygen, 22.41%. Determine the empirical formula of the compound.

Q: Using the average atomic masses given inside the front cover of the

Using the average atomic masses given inside the front cover of the text, calculate how many moles of each substance the following masses represent. a. 4.21 g of copper(II) sulfate b. 7.94 g of bari...

Q: If you spilled a cup of freshly brewed hot tea on yourself

If you spilled a cup of freshly brewed hot tea on yourself, you would be burned. If you spilled the same quantity of iced tea on yourself, you would not be burned. Explain.