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2Q molar mass composition

Total questions: 12

Worksheet time: 12mins

Name
Class
Date
1.

The quantity of a substance can be expressed in terms of

(a)  

2.

an analytical chemist who is known for inventing devices that detect and quantify substances. He develops instrumentation systems for sensing chemical species and low-cost chemical equipment such as colorimeters, pH meters, and polarimeters

(a)  

3.

allows one to know the ideal dosage or amount of substances to use

(a)  

4.

(a)   in food labels provide information on the amount of food components and their assočiated health risks, which a consumer can use to make sound decision on what food to buy or consume. In general, a person should consume 5% or less of the daily requirement for total fat, saturated fat, cholesterol, and sodium per serving, and 20% or more of fiber, vitamins, and minerals. Knowledge of percent composition can help consumers monitor cheir food consumption and achieve these nutritional targets.

5.

is the "true formula" of a substance; it indicates the actual number of atoms in one particle unit

(a)  

6.

shows the simplest whole-number ratio of the atoms in a particle unit is called an empirical formula

(a)  

7.

. A chemical formula that shows the simplest whole-number ratio of the atoms in a particle unit is called an (a)  

8.

obtained by determining the total mass of the

atoms in the empirical formula.

(a)  

9.

not all compounds have adefinite percent composition

a)

true

b)

false

10.

He was named Outstanding Professional Chemist by the Professional Regulation Commission in 2002. He is also a recipient of the UST Gold Series Award for research and international publications

(a)  

11.

obtained his MS and PhD in Instrumentation and Analytical Sciencé from the University of Manchester Institute of Science and Technology (now the University of Manchester) in United Kingdom

(a)  

12.

expresses the mass percentage of each component element in a compound

(a)