Read the given equation:

Ca(OH)2 + 2HCl → CaCl2 + 2H2O

Which of the following is true about the equation?

What is the ph of a solution with a 1.50 × 10−9 m hydroxide ion concentration?

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

The bone of a dinosaur and the imprint of a leaf are examples of which kind of fossils? a) index b) body c) amber d) trace