Which of these is a mixture of a solid that is soluble in water and a solid that is insoluble in water?

a) iron and steel

b) salt and sugar

c) iron and gravel

d) gravel and sugar

Describe the two known major natural mechanisms for converting atmospheric nitrogen to useable forms.

Room temperature is usually considered to be 25°C. What is that in kelvins?

Currently this lab is run qualitatively asking only for whether a solution is acidic, neutral, or basic.

Using a balanced chemical reaction and a periodic table, which of the following is not possible to calculate?

Why do the vinegar and oil in a salad dressing separate into layers if left standing for too long?

What element has 8 valence electrons

Which of the following best describes a metal? Brittle, shiny, and solid Brittle, dull, and low density Malleable, shiny, and able to conduct heat or electricity Malleable, dull, and solid, liquid, or gas at room temperature?

Which of the following errors could cause your percent yield to be falsely high, or even over 100%? Select ALL that apply. A.) Heating the sample too vigorously. B.) Handling the crucible directly with your hands. C.

If 56.8 ml of bacl2 solution is needed to precipitate all the sulfate ion in a 554 mg sample of na2so4 (forming baso4), what is the molarity of the solution?

is the number of total atoms on the left side of a balanced equation always equal to the number of total atoms on the right side of the equation?