Phenol red is a common ph indicator. you add phenol red to an unknown substance and it turns yellow. what does this indicate about the ph of the substance?

Which contains the greatest number of moles of oxygen atoms: 1 mol of ethanol (c2h5oh), 1 mol of formic acid (hco2h), or 1 mol of water (h2o) ? explain why?

How is box of crayons both homogenous and heterogeneous?

Given w = 0, an endothermic reaction has the following.

When a bottle of soft drink is shaken violently, CO2 gas escapes from solution and exerts increased pressure on the interior of the bottle. If the bottle were to be opened in this condition, the beverage would spurt out of the bottle.

What part of an atom is detected by stm?

What is the percent by volume of ethanol (C2H60 or ethyl alcohol) in the final solution when 45 mL of ethanol is diluted to a volume of 250 mL with water?

During the post transcriptional processing of pre-mRNA, a 5′ cap is added to an mRNA in step by step manner. Which of the following reason prevents the possibility of 5′ capping process involving methylation occurring on a DNA strand? a.

What do elements Be, Mg, Ca have in common

A 0.100 m solution of which one of the following solutes will have the lowest vapor pressure? Which will have have the highest vapor pressure? A) KClO4 B) Ca (ClO4) 2 C) Al (ClO4) 3 D) Sucrose E) NaCl

How many individual pencils are equal to 1 gross of pencils