At STP which element is brittle and not a condulctor of electricity? A) S B) K C) Na D) Ar

Ow many grams of NaOH would be needed to react with 199 g of HCl?

Why do we say a substance in a liquid phase is more disordered than the same substance in a solid phase?

Choose all the answers that apply. The cell membrane is made of phospholipids is a single layer is embedded with proteins controls the transfer of materials into and out of the cell does not exist in plant cells

Nuclear fusion differs from nuclear fission because nuclear fusion reactions (1) form heavier isotopes from lighter isotopes (2) form lighter isotopes from heavier isotopes (3) convert mass to energy (4) convert energy to mass

Three students are pushing a box under what conditions will the motion of the box change?

How are chemical formulas of binary ionic compounds generally written? a cation on left, anion on right b anion on left, cation on right c roman numeral first, then anion, then cation d subscripts first, then ions?

Given a fixed amount of gas held at constant pressure, calculate the volume (in L) it would occupy if a 3.50 L sample were cooled from 90.0oC to 30.0oC.

Which of the following is not required for osmosis to occur? View Available Hint (s) Which of the following is not required for osmosis to occur? selectively permeable membrane water concentration gradient cellular energy

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 __%