Clary ran 20 miles in four hours. What was her average speed?

A spoon of salt is added to water. Which of these will increase how fast the salt dissolves? Check all of the boxes that apply.

How many moles are there in 2.6 x 10^24 atoms of Calcium? a. 7.0 x 10-24 moles of Ca b. 4.4 moles c. 168.36 moles d ...10 moles

Explain why phospholipids spontaneously form a bilayer when mixed with water?

In the ground state, an atom of each of the elements in Group 2 has a different 1. oxidation state 2. first ionization energy 3. number of valence electrons 4. number of electrons in the first shell

Why do we experience the changing of the seasons on earth

Calculate the pH of 0.65 M H2SO4 (sulfuric acid) solution? (Ka2: 1.1x10-2)

Ozone reacts completely with NO, producing NO2 and O2. A 13.0 L vessel is filled with 1.30 mol of NO and 1.30 mol of O3 at 401.0 K. Find the partial pressure of each product and the total pressure in the flask at the end of the reaction.

Which particles make up the nucleus of an atom? protons and electrons neutrons and electrons protons only protons and neutrons neutrons only

An egg is fried is that a physical or a chemical change

How many mono-; di -; and trichloro derivatives are possible for cyclopentane?