A sulfur ion has 16 protons and 18 electrons. Find the net charge

How many moles are in a 5m solution that has volume of 500ml

How much of a 100.0 g sample of 198au is left after 8.10 days ifi its half life is 2.70 days?

A balanced chemical equation indicates both the number of particles of reactants and products and the number of a. orbits. c. nuclei. b. electrons. d. moles

What are the atomic number and mass number for the carbon isotope with seven neutrons? express your answer as integers separated by a comma. z, a = ?

What kind of ocean ecosystem did the author of this text ask questions about

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