How many protons and neutrons are there in an atom of boron11?

The pH of an solution shows the concentration of () ions.

Which property determines whether an acid is weak or strong?

Calculate the density of an object with a mass of 30g and volume of 6cm^3

What is the difference between the strength of an acid and concentration

Match each word to it's correct meaning. 1. chain reaction 2. critical mass 3. fission 4. fusion A spontaneous or induced reaction that continues to feed itself and keep itself going.

How many of the following elements have 2 unpaired electrons in the ground state? C Te Hf Si A) 1. B) 2. C) 3. D) 4.

Which has a higher frequency, a neutron or electron? Why?

1) Identify the intensive properties of a sample of matter: A. mass B. hardness C. color D. volume E. reflectivity

Suppose you have a buffer containing 0.400 M hydrazine and 0.300 M hydrazinium chloride at equilibrium. Then you add 25.2 g of NaOH to 2.0 L of the buffer. What change in pH is caused by the addition of the base? A) 0.99 B) 0.40 C) 8.71 D) - 0.36

The heart is an example of which level of organization within an organism? O cell organ tissue organ system O O