Explain what it means by a balanced chemical equation

What is the volume of the Earth in comparison to the Sun? How many Earths would we need to equal the volume of the Sun?

How do you know magnesium is the more metallic element in the compound magnesium oxide MgO

A balloon is inflated to a volume of 5.00 x 102 ml at 22.0 0c. the balloon is then cooled at constant pressure to 0.500 x 102 k. what is the final volume of the balloon?

Calculate the molarity of a solution prepared by dissolving 9.8 moles of solid NaOH in enough water to make 3.62 L of solution

Which acid and base neutralize to give potassium chloride salt? hf (aq) and kcl (aq) hcl (aq) and kcl (aq) hf (aq) and koh (aq) none of the above hcl (aq) and koh (aq) ?

Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O In the reaction of 6 moles of CH4 with excess oxygen, how many moles of water could be produced? 6 C 12.01 Carbon 1 H 1.01 Hydrogen 8 O 16.00 Oxygen A. 4 B. 6 C. 8 D. 12

Most mutagens have what kind of an effect on an organism?

According to the hess's law, the enthalpy of solution is: δhsoln = δhsolute + δhsolvent + δhmix. considering dissolving a small drop of nonpolar pentane oil in water which term (s) in the equation will experience the largest enthalpy change.

Solve for x: ln x = 0.863. Report your answer to 3 significant figures.

What water activities might be easier to do in Lake Assal's salty water? What activities could be more difficult?