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Is rubbing alcohol homogeneous or heterogeneous

10/11/2021 Client: muhammad11 Deadline: 2 Day

Ejercicios 1
Lea el resumen del capítulo 1 (p.38-39) y resuelva los siguientes ejercicios:

1.54, 1.58, 1.60, 162, 1.78, 1.86, 1.106, 1.108, 1.122, 1.124, 1.128, 1.30.

QUERIDOS ESTUDIANTES PONGA ATENCION EN LA FORMA DE PRESENTAR SU TRABAJO:

ESCRIBA A MANO NO EN LA COMPUTADORA Y DEMUESTRE SU TRABAJO,SOLO LA RESPUESTA NO LE DA CREDITO A SU TRABAJO, TOME FOTO Y SOMETALO EN ESTE LINK.

https://uagm.blackboard.com/courses/1/28699_CHEM_224-O_2112_940_ATB/messages/_2270006_1/Libro%20de%20Quimica%20Katherine%20Denniston%2C%20Joseph%20Topping

1.54 Label each of the following as either a homogeneous mixture or a heterogeneous mixture:

a. gasoline c. concrete

b. vegetable soup

d. hot coffee

1.58 Label each of the following as either a physical change or a chemical reaction:

a. A puddle of water evaporates.

b. Food is digested.

c. Wood is burned.

1.60 Label each of the following properties of sodium as either a physical property or a chemical property:

a. When exposed to air, sodium forms a white oxide.

b. The density of sodium metal at 25°C is 0.97 g/cm3.

1.62 Label each of the following as either a pure substance or a mixture:

a. sucrose (table sugar)

c. urine

b. orange juice

d. tears

1.78 Determine the temperature reading of the following thermometer to the correct number of significant figures.

Diagram Description automatically generated

Text Description automatically generated

1.106 If a drop of blood has a volume of 0.05 mL, how many drops of

blood is in the adult described in Question 1.105?

1.108 A newborn is 21 in in length and weighs 6 lb 9 oz. Describe the

baby in metric units.

1.122 The weather station posted that the low for the day would be −10.0°F. Convert −10.0°F to:

a. °C

b. K

1.124 Convert 300.0 K to:

a. °C

b. °F

1.128 Calculate the density of 50.0 g of an isopropyl alcohol–water mixture (commercial rubbing alcohol) that has a volume of 63.6 mL.

1.30 Why is observation a critical starting point for any scientific study?

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