Russian Chemist, Lothar Meyer, invented the modern version of the periodic table in 1869 true or false

Where in the body are nitrogen compounds found? a. proteins b. nucleic acids like DNA c. fats d. both a & b

Anna's mother prepares sauerkraut, a fermented dish made from finely cut cabbage and salt. Lactobacillus bacteria present on the surface of the cabbage combine with salt to turn the cabbage into a crunchy, sour dish.

Which is the best example of potential energy?

A concentrated solution of ammonia is 14.8M and has a density of 0.899g/L. What is the concentration of ammonia in this solution in weight percent (%w/w) ?

If the frequency is high, what else will automatically be high? Question 5 options: wavelength energy pitch both pitch and energy (im thinking wavelength)

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 __%