Is ketchup a heterogeneous or homogeneous mixture? Explain your reasoning.

Which subatomic particle is the identity of the atom and why?

What keeps the stars in the galaxy from moving apart?

Is there DNA in prokaryotic cells?

Which of the following aqueous solutions are good buffer systems? . 0.11 M sodium hydroxide + 0.30 M sodium bromide 0.33 M potassium chloride + 0.20 M calcium chloride 0.28 M nitric acid + 0.23 M sodium nitrate 0.31 M ammonia + 0.

What is the difference between a cation and an anion?

What is meant by solvation? A. nonpolar solute surrounded by polar solvent B. polar solute surrounded by nonpolar solvent C. ionic solute surrounded by nonpolar solvent D. ionic solute surrounded by polar solvent

7. Convert 158 g of C to moles.

How does molecular size affect solubility

Is mass conserved when 200 g of water undergoes a physical change? Use complete sentences to support your answer by explaining how this can be demonstrated.

For wach of the following cases, state whether the density of the object increases, decreases, or remains the same: (a) A sample of chlorine gas is compressed (b) A lead weight is carried up a high mountain. (c) A sample of water is frozen.