Describe two observations you might make when a chemical change takes place

Give approximate values for the indicated bond angles in the molecule shown. express the bonding angles in degrees to four significant digits separated by a comma.

P O R F A V O R 4. Expresa las siguientes magnitudes en unidades del Sistema Internacional. (1 punto) a. 45 m3 b. 1250 cm3 c. 63 días d. 97 cm/min2 e. 927 g∙cm/min2 f. 97 km/h2 g. 2500 g/cm2 h. 36 km/h

A round, three dimensional object is a?

What is the oxidation number of Br in BrCl

Which of the following mixtures can be a buffer? Group of answer choices ammonia and ammonium acetate potassium nitrate and nitric acid potassium nitrite and nitrous acid sodium chloride and hypochlorous acid

In the synthesis of barium carbonate from an alkali metal carbonate (M2CO3 where M is one of the alkali metals) a student generated 3.7 g of barium carbonate from 2.0 g of their alkali metal carbonate.

Give the state of matter that water is in as it moves through earths system

What happens to the volume of a substance as temperatures rises?

Find the total number of atoms in a sample of cocaine hydrochloride, c17h22clno4, of mass 22.5 mg.

What is the relationship between chemical equilibrium and the rates of forward and reverse reaction