Use of fractional distillation?

Select two statements that describe how elements in the same group are similar to each other. Remember to select two answers A: Elements in the same group share the same number of valence electrons.

HOCl dissociative into which 2 ions

How many significant figures are in the number 4.00700 x 1013?

When a solution of NaI reacts with a solution of AgNO3, what is the net ionic equation? Na + (aq) + NO3 - (aq) → NaNO3 (s) Na (aq) + NO3 (aq) → NaNO3 (s) No reaction Ag + (aq) + Cl - (aq) → AgCl (s)

How can you make a solution saturated? add more solution add more solvent add more solute decrease the consentration

The dihydrogenphosphate ion, H2PO4 - is amphiprotic. In which of the following reactions is this ion serving as a base?

What is the reactant (s) of the reaction below? MgCO3 (s) → MgO (s) + CO2 (g) O A. Magnesium oxide and carbonate O B. Magnesium carbonate O O C. Magnesium and carbon dioxide D. Magnesium oxide

Temperatures in June in the Paradise City are distributed nearly normally with mean 82 degrees and standard deviation 6 degrees F. Which of the following temperatures would be considered unusual? A. 89.2 B. 75.4 C. 79 D. 86.2 E. 95.8

Which feature do all adult echinoderms have?

A scientist observed a 5-mL sample of an unknown substance. It is a blue liquid with a density of 1.2 g/cm. the substance reacts with carbon dioxide.