(a)
Interpretation:
The term SI base units need to be defined.
Concept introduction:
The term is defined as a phrase or word to explain a concept or thing. For example: for the description “anything that occupies space and have mass” is termed as matter.
Symbol is a character used to represent a function, object or process. For example: the SI unit of mass is kilograms and its symbol is kg.
(b)
Interpretation:
The term significant figures needs to be defined.
Concept introduction:
The term is defined as a phrase or word to explain a concept or thing. For example: for the description “anything that occupies space and have mass” is termed as matter.
Symbol is a character used to represent a function, object or process. For example: the SI unit of mass is kilograms and its symbol is kg.
(c)
Interpretation:
The term natural law needs to be defined.
Concept introduction:
The term is defined as a phrase or word to explain a concept or thing. For example: for the description “anything that occupies space and have mass” is termed as matter.
Symbol is a character used to represent a function, object or process. For example: the SI unit of mass is kilograms and its symbol is kg.
(d)
Interpretation:
The term exponential notation needs to be defined.
Concept introduction:
The term is defined as a phrase or word to explain a concept or thing. For example: for the description “anything that occupies space and have mass” is termed as matter.
Symbol is a character used to represent a function, object or process. For example: the SI unit of mass is kilograms and its symbol is kg.
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GENERAL CHEMISTRY-MOD.MASTERINGCHEM.
- Although the preferred SI unit of area is the square meter, land is often measured in the metric system in hectares (ha). One hectare is equal to 10,000 m2. In the English system, land is often measured in acres (1 acre = 160 rod2). Use the exact conversions and those given in Exercise 47 to calculate the following. a. 1 ha = __________ km2 b. The area of a 5.5-acre plot of land in hectares, square meters, and square kilometers c. A lot with dimensions 120 ft by 75 ft is to be sold for 6500. What is the price per acre? What is the price per hectare?arrow_forwardThe label on a bale of mulch indicates a volume of 1.45 ft3. The label also states that the mulch in the bale will cover an area of a garden 6 ft 6 ft to a depth of 1 in. Account for the discrepancy in the given volumes.arrow_forwardConvert the following temperatures to degrees Celsiusor Fahrenheit: (a) 95°F, the temperature on a hotsummer day; (b) 12°F, the temperature on a cold winterday; (c) a 102°F fever; (d) a furnace operating at1852°F; (e) −273.15°C (theoretically the lowestattainable temperature).arrow_forward
- Report all numerical answers to the correct number of significant figures! (a) Give the names of the following elements: (i) Ag (ii) V (b) Give the symbols of the following elements: (i) aluminum (ii) copper 1. 2. Report the answers of these calculations to the correct number of significant figures: (a) 3.7793 x 8.324 x 7.4976 = ? (b) 10.4071 +66.1441 +12.515 = ? (c) (7.971 x 10¹7) (3.75 x 10³)/7.8416 = ? (Report answer in exponential notation.)arrow_forward2A. The average density of Earth is 5.52 g/cm3. What is its density in (a) kg/m3; (b) Ib/ft³? 2B. There are 2.60 x 1015 short tons of oxygen in the atmosphere (1 short ton = 2000 Ib). How many metric tons of oxygen are present (1 metric ton = 1000 kg)?arrow_forward(1) A rectangular block of wood has the following dimensions: 10.0 cm x 5.00 cm x 4.00 cm. The block weight 100 g. What is the density of the block of wood? (2) What is the mass of a 400-mL sample of ethyl alcohol if its density is 0.8 g/mL?arrow_forward
- Convert the following temperatures to kelvin:(a) 115.21°C, the melting point of sulfur; (b) 37°C, thenormal body temperature; (c) 357°C, the boiling pointof mercury.arrow_forwardNear room temperature, liquid benzene (C,H,) has a density of 0.8765 g cm3. Suppose that 0.2124 L of benzene is measured into a container. Calculate (a) the mass and (b) the chemical amount of benzene in the container. Mass (g Density = Volume (cm') 55arrow_forwardDescribe the difference between intensive and extensive properties. Which of the following properties are intensive: (a)mass; (b) density; (c) volume; (d) melting point?arrow_forward
- Explain the important distinctions between each pairof terms: (a) mass and weight; (b) intensive and extensive properties; (c) substance and mixture; (d) systematic and random errors; (e) hypothesis and theory.arrow_forwardExpress (7.64x10^5) g in SI base units using scientific notation.arrow_forwardExpress the following numbers as decimals:(a) 1.52 × 10−2 , (b) 7.78 × 10−8 , (c) 1 × 10−6, (d) 1.6001 × 103.arrow_forward
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