When we boiling the ice, why after about 15 minutes the temperature of it doesn't change anymore? (answer by temperature/molecules/phase change)

Weak acids: are always more soluble than strong acids have a higher degree of dissociation than do strong acids only ionize a fraction of their molecules always produce weak conjugate bases

Which of the following stars is the coolest? Sirius, a type A star Arcturus, a type K star Spica, a type B star Antares, a type M star

Which of the following cointains electrolytes A. Sodium Chloride solution B. Pure water C. Covalent molecules D. sugar solution

Write the net ionic equation for the following molecular equation Mg (s) + Snso (aq) Mgso4 (aq) Sn (s) Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aa) or (s). If a box is not needed, leave it blank.)

Given the following balanced chemical equation: Ca (OH) 2 (s) + 2HNO3 (aq) → Ca (NO) 3 (aq) + 2H2O (l) How many grams of Ca (OH) 2 are required to neutralize 25.0 ml of 0.100 M HNO3?

Chemical Reactions Lab Procedures: 1. Place a 1cm long piece of white chalk in a clear plastic cup. 2. Add 5 mL of vinegar to the cup. 3. Record your observations. If you were performing the procedures above you would need to A.

How many moles of oxygen are in 0.53 moles of co 22?

The car wit fastest acceleration is the tempest. it has an acceleration of 6.1 m/s. suppose the car accelerates from rest to a final speed of 30. m/s. how long does it take the tempest to reach this speed?

What is the wavelength of 2.18*1016 hz wave?

Which of the following summarizes photosynthesis? A. glucose + carbon dioxide → oxygen + water B. carbon dioxide + water → glucose + oxygen + water C. oxygen + water → glucose + carbon dioxide + water D.