How many neutrons does element X have if its atomic number is 44 and its mass number is 151?

Imagine that you have an ideal gas in a 6.70 L container, and that 1450 molecules of this gas collide with a square-inch area of the container at any given instant. If the volume is increased to 40.

Do all of the glassware measure with the same degree od accuracy

How would the equilibrium of an exothermic reaction at 25°c be affected if the temperature of the system were reduced? (hint: apply le chatelier's principle) ?

reddit The amount of NE released by sympathetic nerve terminals will be most strongly influenced by a change in which of the following? Alpha receptor sensitivity Alpha receptor density Extracellular [Ca2+] COMT activity

How many grams of sodium chloride must dissolve in 750.0 g of water to make a 0.50 molal solution?

1. Which of the following best describes an example of pure chemistry? a) testing the effects of lower concentrations of a drug on humans b) studying chemicals containing carbon c) developing a cure for osteoporosis d) finding an antidote for a new

Problem 1: For which of the following activities might you want to hire a chemist? A. building a garage B. testing a sample of water from a well C. finding a comet D.

Why do most living things need food water and the ability to get rid of waste?

What is the effect of adding more water to the following equilibrium reaction? CO2 + H2O - > 2H2CO3

What aldol product is formed when two molecules of butanal react together in the presence of base?