31 Which notations represent different isotopes of the element sodium? (1) 32S and 34S (3) Na + and Nao

(2) S2 - and S6 + (4) 22Na and 23Na

Which piece of evidence would suggest an unknown substance is an ionic compound?

Copper conducts heat well. physical or chemical

How many atoms of Oxygen (O) in the reactants of the equation below: 6CO2 + 6H2O - -> C6H12O6 + 6O2 18 19 20 30

This is a body of water along the coast where freshwater from rivers and streams meets and mixes with salt water from the ocean. You could call this a place of transition from land to sea and freshwater to salt water. It is a (n) A) bay. B) estuary.

A manufacturer claims its cleanser work twice as fast as any other. could testt be performed to support the claim?

Hydrogen has three isotopes with mass numbers of 1, 2, and 3 and has an average atomic mass of 1.00794 amu. This information indicates that 1. equal numbers of each isotope are present 2. more isotopes have an atomic mass of 2 or 3 than of 1 3.

Describe the process of how visible light is produced

Which of the following contains both ionic and covalent bonding? CH4 NaCl NH4Cl N2O4 If the formula for a compound is represented by X2Y3 and the charge on the Y ion is - 2, what is the charge in the X ion? +1 +2 +3 +4

Qual e o maior orgao do corpo humano

Whic of the following fromulas represents a nonpolar molecule? a) N2 b) H2O c) NaCI d) HCI