How many atoms of phosphorus are in a 0.859 g sample?

Answer in units of atoms.

Which has the least gravitational potential energy? a 25 kg barbell being held above the head of a weightlifter a 10 kg barbell resting on the floor

Earthquakes happen when rocks bend and snap back in process called

a propane tank containing 55l has 2.46 moles of the gas C3 is propane what would the number of moles if 1/2 of the gas is used

Which of the following changes can alter the form of a substance but does not necessarily change it to the other substance? a. physical changes b. pressure changes c. phase changes d. all of the above

What is the critical angle for the interface between water and sodium chloride?

The volume of 1 mole of o2 gas at T=273k P=1atm is? A 6.02 x 10^-23 ml B 760 L C 22.4 L D 2.24 L E 224 L

There are two stable isotopes of bromine. Their masses are 78.9183 and 80.9163 amu. If the average atomic mass of bromine is 79.9091 amu, what is the natural abundance of the heavier isotope? percent abundance of 81Br __%

If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation) ? For argon, a=1.

Which of these is a covalent compound? 1. AICI3 2. CO 3. MgO 4. LiCI

What is a protein used for