What is the pH when the hydrogen ion concentration is 7.0 * 10^-3 M?

A. 1.9

B. 2.2

C. 3

D. 3.3

The electron affinity trend is:a. the same as the ionization energy trend and the atomic radius trendb. the same as the ionization energy trend but opposite the atomic radius trendc.

How many protons, neutrons, and electrons are there in 70Se2-?

If the internal energy of the products of a reaction is lower than the internal energy of the reactants, what is the sign of δe for the reaction?

These are the reactants in the chemical equation 2 H2 + 02 - -> 2 H20 A. 2H2 + O2 B. 2 H2O

Suppose you wanted to monitor a pH change between 5.3 and 6.3. Which indicator would be most appropriate?

A blank studies and forecasts the weather using data gathered from many surfaces

A patient needs 0.024 g of a sulfa drug. There are 6-mg tablets in stock. How many tablets should be given? Express your answer as an integer.

What does the periodic table displays

Consider the reaction: 2A (g) + B (g) →3C (g). When A is decreasing at a rate of 0.200 M⋅s-1, how fast is B decreasing?

2.70 feet is the same as how many cm?