Which volume measurement is expressed in four significant figures?

A) 5.50 ml

B) 550. ml

C) 5,500 ml

D) 5,500. ml

The Big Bang is responsible for the formation of two elements found in our universe, hydrogen and helium. The rest of the elements are created by stars during the various stages in their life cycle. A. True B. False

How many moles of oxygen are in 6.0*10²² molecules of O2

Compare and contrast renewable and nonrenewable resources give at least two advantages and two disadvantages of each

Which of the following statements about Bohr's model of the atom is true? Bohr's model explains the chemical behavior of all atoms. Bohr's model does not take into account the interactions multiple electrons would have with one another.

What is the charge on he helium atom? Explain your reasoning. (A helium atom has two electrons, two protons, and two neutrons.)

Evaluate - if you put a scale in an elevator and weigh yourself as you ascend and the descend, does the scale have the same reading in both instances?

Why would you add a catalyst to something

A sample of the sugar d-ribose (C5H10O5) of mass 0.727 g was placed in a calorimeter and then ignited in the presence of excess oxygen. The temperature rose by 0.910 K. In a separate experiment in the same calorimeter, the combustion of 0.

the volume of an ideal gas in a container is 2.0 L what will be the volume of the gas if the pressure on the container is doubled while the temperature is reduced from 400 K to 200 K

Which of the Following Will result in increasing temperature of s gas