Jamal wants to make a model of a hill near his house to test the way the slope affects how rain runs down the hill. Which type of model would be best for what he needs?

What number would you write before water in the formula for calcium carbonate hexahydrate? 4 5 6 7

Which particle has no charge

In which substance does sulfur have an oxidation state of + 4

23.9 km + 15 km Calculate this problem and report the answer with the correct number of significant figure

Classify an element having the following ground state electron configuration as an alkali metal, alkaline earth metal, nonmetal, halogen, transition metal, or noble gas. a. [Ne]3s1 b. [Ne]3s23p3 c. [Ar]4s23d104p5 d. [Kr]5s24d1 e. [Kr]5s24d105p6

What conversion factor would you use to find the number of moles in 3.52x10^24 molecules

the solubility in mol/dm3 of 20.2g of potassium trioxonitrate (V) dissolved in 100g of water at room temperature is

Which process occurs at the anode in an electrochemical cell? (1) the loss of protons (2) the loss of electrons (3) the gain of protons (4) the gain of electrons

What is natural transmutation?

An electron in a sodium atom gains enough energy to move from the second shell to the third the sodium atom becomes