How many neutrons exist in the isotope sodium-23?

Think of two organisms. What makes each organism unique? Describe at least two ways they are different. Describe 2 similar characteristics your organisms share.

Whats the mass of a 1.25L sample of liquid that has a density of 0.921g/mL?

Given the equation representing a reaction at equilibrium: N2 (g) + 3H2 (g) 2NH3 (g) What occurs when the concentration of H2 (g) is increased? (1) The equilibrium shifts to the left, and the concentration of N2 (g) decreases.

What is the formula and name of a hydrate that is 85.3% barium chloride and 14.7% water

49.7 mL of a solution of NaOH is needed to neutralize a solution that contains 1.86 g of H2504 in 20.00 mL of water. What is the molarity of the NaOH solution? H2SO4 + 2 NaOH - -> 2H2O + Na2SO4 1) 0.763 M 2) 0.0404 M 3) 1.13 M 4) 0.481 M 5) 0.

What type of a reaction takes place when atoms or molecules rearrange to form new substances

How would the mass of one mole of magnesium atoms compare to the mass of one mole of iron

Calculate the ph of the resulting solution if 34.0 ml of 0.340 m hcl (aq is added to

One of the signs of a chemical reaction is taking place

If force is held constant as surface area decreases pressure