How many valence electrons does a neutral fluorine atom have?

a. 1

b. 7

c. 8

d. 9

Is tap water a heterogeneous or homogenous mixture? Explain your answer.

What are the different types of energy involved when you lift your book bag off the floor and drop it?

5. How many molecules of water are there in 8.050 x 10 grams of water?

What is the flaw in Rutherford's model?

Which of the following is the science of naming living things according to common characteristics? A) taxonomy Eliminate B) classification C) phylogeny D) taxon

A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path length, what is the concentration of the solution

Balance the following equation with the smallest whole number coefficients. Choose the answer that is the sum of the coefficients in the balanced equation. Do not forget coefficients of "one". RbOH + H3PO4 → Rb3PO4 + H2O

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals

5.2*10^26 molecules of ch4 in volume

Which of the following statements about igneous rocks is correct A. intrusive igneous rocks are formed when magma is called above the ground. B. Extrusive igneous rocks are formed when magma is cooled above the ground C.