How Many Grams In A Megagram – The metric system The British system was mainly used in the British Empire and was not very standardized. The French formed a committee.
Presentation on theme: “The Metric System The British system was used primarily in the British Empire and was not widely standardized. The French formed a committee.” – Introductory note:
How Many Grams In A Megagram
2 The metric system The British system was mainly used in the British Empire and was not widely standardized. The French organized a committee to develop a universal measurement system. After about 10 years, the commission proposed and approved a measurement system. The metric system offers simplicity with a single base unit for each measurement. Chapter 3
Answered: 159m 1.58t60x10 F 1.59×109 4. The Mass…
A meter is defined as 1/10,000,000 of the distance from the North Pole to the equator. One kilogram (1000 grams) was equal to the weight of a cube 0.1 m on each side. One liter equaled the amount of one kilogram of water, which equaled 4 kilograms. Chapter 3
Another advantage of the metric system is the decimal system. Uses prefixes to increase or decrease base units. For example: One kilometer is 1000 meters. A millimeter is 1/1000 of a meter. Chapter 3
For example, the kilo prefix increases the base unit by a factor of 1000:1 Kilogram 1000 grams The national prefix decreases the base unit by a factor of 1000:1 millimeters Chapter 3
8 Metric Symbols Metric unit names are abbreviated using symbols. For the base unit, use the prefix symbol after the symbol, so: nanometer abbreviated nm microgram abbreviated mg deciliter abbreviated dL gigasecond abbreviated Gs Chapter 3
Metric Conversion Chart
9 Metric Equivalents We can write unit equations to convert between different units of measurement. The prefix kilo stands for 1000 base units, so 1 kilometer is 1000 meters. The division equation is 1 km = 1000 m. Similarly, a millimeter is 1/1000 of a meter, so the unit equation is 1 mm = m. Chapter 3
10 Measurement unit factors Since 1000 m = 1 km, we can write the following unit factors to convert meters to kilometers: 1 km or m 1000 m km Since 1 m = mm, we can write the following unit factors. 1 mm or 0.001 mm Chapter 3
We will use the section analysis method we learned in Chapter 2 to solve metric-to-metric conversion problems. Remember there are three steps: Write the section the answer asks for. Write the mark associated with the answer. Use unit factors to convert the given unit to the required units in the answer. Chapter 3
What is the weight of a 325 mg aspirin tablet in grams? Step 1: We want grams. Step 2: We write down the data: 325 mg. Step 3: Use the unity factor (1 mg = g) and round to three significant figures. 325 mg × = g 1 mg 0.001 g Chapter 3
Metric Tons (tonnes) To Kilograms Conversion (t To Kg)
The hospital has 125 deciliters of blood plasma. What is the volume in milliliters? Step 1: We want an answer in ml. Step 2: We have 125 dL. Step 3: First convert dL to L and then L to mL: 0.1 L and mL to 1 dl L. Chapter 3
Problem 14, continued Use factors of two units and round the answer to 3 significant figures. Note that both the DL and L units leave and cancel the ML units. 125 dl × = 12, 500 ml × 1 dl 0.1 L 1 ml 0.001 L Chapter 3
15 Another example The mass of the Earth’s Moon is 7.35 × 1022 kg. What is mass in megagrams? We want Mg; we have 7.35 × 1022 kg. Convert kilograms to grams and then grams to megagrams. 7.35 × 1022 kg × = 5.98 × 1019 Mg × 1 kg 1000 g 1 Mg g Chapter 3
In the United States, the English system still predominates. We often have to convert between English and metric units. Chapter 3
Solved: ‘an Aspirin Tablet Has A Mass Of 9820.0 Mg Report The Mass Of The Tablet In: Grams= Kilograms: Micrograms: X106 U G Centigrams Only Input Numbers Your Answers Must Be Expressed
The length of the American football field, including the end zones, is 120 meters. How long is it in meters? Convert 120 yd to meters assuming yd = m. 120 yd × = 110 m 1 y 0.914 m Chapter 3
A half-gallon carton contains 64.0 fl oz of milk. How many milliliters of milk are in the carton? We want ML; we have 64.0 fl oz. Use 1 kw = 32 fl oz and 1 kw = 946 ml. 64.0 fl oz × = 1,890 ml × 32 fl oz 1 sq. 946 ml Chapter 3
For example, the speed limit on most highways is 55 miles per hour. How do you convert that to meters per second? Convert one division at a time using division factors. first, miles → meters seconds, hours → seconds Chapter 3
20 Subsection Problem A motorcycle is traveling at a speed of 75 km/h. What is the speed in meters per second? We have km/s; We want m/s. Use 1 km = 1000 m and 1 h = 3600 s. = 21 m/s × 1 km 1000 m 1 h 3600 s 75 km h Chapter 3
The Metric System We Can Convert Between Units By Moving The Decimal Left Or Right In A Number.
21 Volume by calculation The volume of an object is calculated by multiplying its length (l), its width (w) and its thickness (t). volume = l x w x d All three dimensions must be the same. If an object measures 3 cm 2 cm 1 cm, its volume is 6 cm3 (cm3 cubic centimeters). Chapter 3
The liter (L) is the basic unit of volume in the metric system. A liter is defined as the volume of a cube 10 cm on each side. Chapter 3
1 liter 1000 cubic centimeters 10 cm × 10 cm × 10 cm = cm3 1000 cm3 = 1 L = 1000 ml So 1 cm3 = 1 ml. Chapter 3
The car engine displaces a volume of 498 cm3 in each cylinder. What is the cylinder displacement in cubic inches? We want in3; we have 498 cm3. Use three times 1 inch = 2.54 cm. = 30.4 in3 × 1 2.54 cm 498 cm3 × Chapter 3
Mochithings: 2020 Ruler Calendar Sheets
If it has a very irregular shape, its size cannot be determined by measurement. You can determine indirectly by measuring the volume of water that displaces the sound. This method is called displacement noise. The magnitude of the displacement can also be used to determine the volume of the gas. Chapter 3
You want to measure the volume of an irregularly shaped particle. Partially fill the volumetric flask with water and measure the volume of water. Add jadeite and measure the difference in sound. The volume of jadeite is 10.5 ml. Chapter 3
You want to measure the amount of gas released in a chemical reaction. The gas produced moves the water in the bottle to the hook. The amount of water displaced is equal to the amount of gas. Chapter 3
28 The concept of density The density of a substance is a measure of its mass concentration. Density is defined as the mass of an object divided by the volume of the object. = mass volume density Chapter 3
Math Metric Conversion Chart
29 Density is expressed in different units. It is usually measured in grams per milliliter (g/ml) for liquids, grams per centimeter (g/cm3) for solids, and liters (g/l) for gases. Chapter 3
Determination of density We can compare the density of one substance with another. A solid will rise above a liquid of higher density. The density of object S1 is less than that of water but greater than that of L1. The density of object S2 is lower than L2 but greater than the density of water. Chapter 3
32 Calculating Density What is the density of a platinum bar with a mass of G and a volume of 10.0 cm3? Remember that density is mass/volume. = g/cm3 10.0 cm3 g Chapter 3
We can use density as a unit factor to convert between mass and volume. The car battery contains 1275 ml of acid. If the density of battery acid is 1.84 g/ml, how many grams of acid are in a car battery? We have 1275 ml; we want grams: 1275 ml × = g ml 1.84 g Chapter 3
Gram To Milligram Convert
The density of gasoline is 730 g/l at 0 ºC (32 ºF) and 713 g/l at 25 ºC (77 ºF). What is the mass difference of 1.00 gallons of gasoline at these two temperatures (1 gallon = 3.784 L)? The difference is about 60 grams (about 2%). = 2760 g × 0 ºC: gal × 730 g L 3.784 L 1 gal = 2700 g × 25 ºC: 1.00 gal × 713 g L 3.784 L 1 gal Chapter 3
35 Temperature is a measure of the average kinetic energy of individual particles in a particle. There are three temperature scales:
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