Which of these has the highest h + concentration? lemon juice, ph = 2.3 red wine, ph = 3.2 tomato juice, ph = 4.7 household ammonia, ph = 10.8?

Nuclei with the same mass number but different atomic numbers are called isobars. Consider Ca-40, Ca-41, K-41 and Ar-41.

Which element is an example of a metalloid? A) gold B) helium C) iron D) silicon

The nutritional information on a cereal box shows that one serving of dry cereal has 90 calories (actually kilocalories).

An unstable nucleus which starts a decay process is called the parent nuclide. True False

What is the maximum mass of ethyl alcohol you could boil with 1000 j of heat, starting from 22 ∘c?

How are intermolecular forces different from the forces that bond atoms together into molecules? How are they similar?

Assuming a constant temperature which sample below would you expect to be at the highest pressure?

What is 16.7 cubic feet expressed in cubic centimeters

3. Using Equation 18-5 and the pKIn value you found, determine the ratio [In-]/[HIn] at the pH in the middle of the range you studied (i. e., pH = 6.0 for bromocresol purple, pH = 7.0 for bromothymol blue, and pH = 7.7 for phenol red).

Suppose you begin with 1.50~g of the hydrate copper (II) sulfate · x-hydrate (CuSO4· x H2O), where x is an integer. After dehydration you find that you are left with 0.96~g of the an-hydrate CuSO4. What is the unknown integer x.