How do simple machines make work easier?
they increase the distance of applied forces.
they change the strangth or direction of a force.
o they add energy to the work.
o
they reduce the speed of work.

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.