1. Which of the following options correctly rounds 126.006 to two significant figures? A) 126.01 B) 130.00 C) 120 D) 130

Q: 1.50 Determine the number of significant figures in each of the following measurements: (a) 4867 mi,…

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Q: A student measures the mass of a piece of aluminum, and finds it to be 8.945 g. She finds that the…

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Q: How many significant figures are in each of these measurements? 93 g, 420210 kg,

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Q: A large stone weighs 53.0 kg, how many pounds does it weigh?

A: Given: Mass in Kg = 53.0 Kg.

Q: A major component of gasoline is octane (CH8). When octane is burned in air, it chemically reacts…

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Q: When elemental iron corrodes it combines with oxygen in the air to ultimately form red brown…

A: (a) The mass of the iron nail will increase after the rusting process.  Rusting involves a…

Q: In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass…

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Q: The answer to   (315.8 g + 4.52 g)  has how many significant figures?

A: In this question, we will find out the number of significant figures in the final answer.…

Q: Lignum vitae is a hard, durable, and extremely dense wood used to make ship bearings. A sphere of…

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Q: Bob and Jill are measuring the height of Mr. Chenet (Mr Chenet is 1.8593 meters tall). Bob gets a…

A: Accuracy It is defined as the closeness of measurement to specific value means we will have one…

Q: 132. The following statements are all true. (a) Jessica's house is 5 km from the grocery store. (b)…

A: Given: (a) Jessica’s house is 5 km from the grocery store. (b)Jessica’s house is 4.73 km from the…

Q: A certain liquid has a density of 2.67 g/cm 3. 30.5 mL of this liquid would have a mass of how many…

A: The relation between the mass of substance and space occupied by it is defined by the term density.…

Q: If the radius of the sun is 7.001×105  km, what is the average density of the sun in units of grams…

A: Density can be calculated as: Density=MassVolume

Q: What is the mass in grams of a cube of gold (density = 19.32 g/cm3) if the length of the cube is…

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Q: Butane (c4h10) is the liquid fuel in lighters. how many grams of carbon are present within a lighter…

A: Density :-  The ratio of mass oa substance to its volume is known as density  Density = mass /…

Q: TOTEW 5. A thin lead apron is used in dental offices to protect patients from harmful X rays. If the…

A: The volume of the thin lead apron can be calculated as given below.

Q: A patient is prescribed 0.020 mg of a drug that is available in 10 μg tablets. How many tablets are…

A: Given :- amount of drug prescribed by doctor = 0.020 mg               mass of drug in each tablet =…

Q: 7) Cats love to play with balls of yarn. If a 3.75 inch diameter ball of yarn weighs 0.110 lbs, what…

A: Given: Mass of ball = 0.110 lb Diameter of ball = 3.75 inch Radius of ball = 3.75 inch/2 = 1.875…

Q: An object is determined to have a mass of 0.01080 g. How manysignificant figures are there in this…

A: 1. Zeros before the decimal point are not counted as a significant figure.  2. Zeros just after the…

Q: PART 2 Density of Gravel 0010 The mass of the empty weighing boat was measured. Then the weighing…

A: Density of a substance is defined as mass per unit volume. It is denoted as d or ρ. S.I unit of…

Q: An object has density of 19.3 g/ml. What is the mass of 25.0 mL of this object?

A: Given : density of object = 19.3 g/mL And volume of object = 25.0 mL

Q: A geology student found an irregularly shaped rock, with a mass of 28.63 grams, and placed it into a…

A: Given,Mass of the rock = 28.63 gInitial volume of water = 13.3 mLVolume of water after rock was…

Q: calculate the volume in cm3 of 1,555,738,322 ng of manganese. the density of manganese is 7.20 g/cm3

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Q: How should he record his answer, to the correct number of significant figures?

A: In multiplication rounding off the answer to the least number of significant digits given in the…

Q: There are 12 inches in 1 foot and 3 feet in one yard. There are 1760 yards in 1 mile.  a. How many…

A: To solve the given questions, use the dimensional analysis and conversion factor to calculate…

Q: The beakers shown below have different precisions. a. Label the amount of water in each of the three…

A: Three different beakers are shown in the picture with different precision.

Q: A man is trying to purchase a carpet for his living room. The manufacturer sells the square feet…

A: Given information are,          Cost of one ft2 of carpet = $56.95          Length of room = 4.340 m…

Q: Which area is greater than 100 ft?? (yes, that means converting all of them to feet in order to know…

A: Since you have posted multiple question, we are entitled to answer the first only.

Q: a large stone weighs 53.0 kg. How many pounds does it weigh?

A: The relation between kilogram (kg) and pound (lb) is written below.1 kg = 2.205 lbs

Q: Scientists are analyzing a substance collected from a recent trip to Mars. A sample of the substance…

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Q: 2. A circle has a radius of 0.58 yd. What is the area in cm2 ? 3. What is the volume of a sphere, in…

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Q: C. The Q4. Which of the following has the same number of significant figures as the number 1.0310?…

A: Significant figures of a number in positional notation are digits in the number that are reliable…

Q: What is the density of an object that has a mass of 2.628 g and is 2.23 cm x 1.21 cm x 0.36 cm ? a.…

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Q: ii) How many significant figures are present in number 05.105? a. 3 b. 4 c. 5 d. 6

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Q: If gasoline costs $3.90 per gallon, what was the fuel cost for this trip?

A: Yes, conceptually your answer and colculations are correct. But here from the economy,final answer…

Q: of the following is an exact value? A. 1 peso coin B. 12 cars C. 798

A: An exact number has zero uncertainty in it .It has an infinite number of significant figures.…

Q: How is the density of an object in kg/L related to its density in g/mL?

A: Density = mass/volume   Unit of density  :-        g/mL       Kg/L 1 kg = 1000 g 1 L = 1000 mL

Q: 14) Oxygen (02) is classified as what type of matter? A) element B) homogeneous mixture C) compound…

A: Thankyou for submitting an excellent question. Since you have asked multiple question, we will solve…

Q: There are 12 eggs in a dozen. If a farmer's chickens produce an average of 722 dozen eggs in a…

A: 1 dozen egg = 12 eggs There are 722 dozen eggs are produced in the one month.  Means , 1 month = 722…

Q: 1.-How many significant figures are in the following numbers? 0.70620 a. b. 5010 4548 C. d.…

A: Rules for Determination of Significant Figures:[i] All non-zero digits are significant.For example:…

Q: How many significant figures does 31.03 g + 12 mg has?

A: First convert 12mg into g by multipy 10-3 So 12mg=0.012g 31.03+0.012= 31.042 So minimum 2…

Q: A major component of gasoline is octane (CH₂). When octane is burned in air, it chemically reacts…

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Q: Calculate these masses.(a) What is the mass of 4.00 cm3 of sodium, density = 0.97 g/cm3 ?(b) What is…

A: (a)

Q: A scientist obtains the number 0.045006700 on a calculator. If this number actually has four (4)…

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Q: Perform the following calculation. How many significant figures should your answer be reported to?…

A: The expression given is,

Q: What is the density of the rock

A: In this question we found the density of the rock and also we know about the density.

Q: The volume of water in large scale reservoirs is often measured in units of an acre-foot, which is…

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Q: What is the average height for an American male (69.5 inches) in centimeters? One inch is 2.54…

A: Unit conversion is a basic tool of measurement, which convert one unit into another unit with…

Q: 78 - Which answer has the correct number of significant figures? 0.08206 x (273.15 + 9.8) 0.927 х…

A: The number that is expressed in the form of digits is established using significant figures. These…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.