Which indicator would best distinguish between a solution with pH of 7.4 and a solution of 9.2?

1) phenolphthalein

2) thymol blue

3) bromthymol blue

4) litmus

Empirical formula 78.3% Ba and 21.7%F

How are the input and output forces of the parts of a complex machine related?

A length of 10 cm equals how many dm? Mark all that apply. Question 2 options: 1 10 100 101

During an investigation, similar effervescent tablets were dropped into a beaker containing cold water and a beaker containing tap water. The table below shows an incomplete record of the investigation.

In which reaction are electrons transferred from one reactant to another reactant? (1) 2Ca (s) + O2 (g) = >2CaO (s) (2) AgNO3 (aq) + KCl (aq) = >AgCl (s) + KNO3 (aq) (3) HCl (aq) + NaOH (aq) = >NaCl (aq) + H2O (l) (4) H3O + (aq) + OH - (aq) = > 2H=

What type of chemical process is used to create perfume?

Which of the following is a polyatomic ion? O A. HCI O B. Na O C. PO, O D. 52

What are the cations and anions for V2 (CO3) 3

If you were asked to convert 4.2 x 1022 atoms of aluminum to moles, which of the following should you use for the conversion?

Carbonic acid (H2CO3) does not dissortate 100 percent in water. What type of substance is it? weak acid Strong base strong acid weak base