Review the rules for significant figures in calculations. Perform the following mathematical operations and round to the correct number of significant figures. a. 27.95 + 13.6 b. 408 - 12.21 c. 81.32/0.781 d. 15.9 x 3.021

Q: Lithium is the least dense metal known (D = 0.53 g/cm³). What is the volume occupied by 250 g of…

A: The formula of density can be used to calculate volume.

Q: Determining Density and Using Density to Determine Volume or Mass Calculate the density of mercury…

A: Given, Mass of mercury = 1.00 * 102 g Volume = 7.36 cm3

Q: Iron has a density of 7.86 g/cm3.  The volume occupied by 55.85 g of iron is

A: The density of a substance is defined as mass per unit volume. It can be represented by the below…

Q: 58. Perform each calculation to the correct number of significantfigures.(a) 89.3 * 77.0 * 0.08(b)…

A: Significant figures are the digits of a number that are meaningful in terms of accuracy or…

Q: II 8TIIL! US ng TaUie 2.9 UI page II II your tCxID0OK, IUchtIly tne 3U03UICC. USIlng 245a l,20 7Lx…

A: Methyl mercury levels higher than 3.00×10-4 mg/dL are toxic to central nervous system. Whether the…

Q: The mass of unknown metal cylinder A is 8.56 g that occupies 3.2 cm3. a. Calculate the density in…

A: Density of a substance is given by the ratio of mass of the substance to that of the volume.

Q: The density of chromium metal is 7.14 g/cm3. A cube of chromium has a mass of 62.00 kilograms.…

A: Record the given data, Mass of cube = 62.00 Kg = 62000 g…

Q: In the lab a student measured the density of an Aluminum cylinder to be 2.89 g/cm3. The handbook…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: 38.The density of carbon dioxide is 1.8 kg/m^3. So, the volume occupied by 7.2 kg of carbon dioxide…

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: . Sunnose a ruler is used to measure the length of an object as shown in the figure belenä 5. 7. 10…

A:

Q: A solid metal sphere has a volume of 4.2ft^3 the mass of the sphere is 155 lb find the density of…

A:

Q: A substance has a known density of 7.81 g/mL. A large piece of it is measured, and the volume is…

A: Here we use the formula   d = m/v.  Where d= density, m= mass,…

Q: 1) How would you determine the density of an irregular object? A) d = m/v, so measure the mass of…

A: Step-1:    As per our guideline we are upposed to solve 1 question at a time. Please resubmit the…

Q: 5. Determine the number of significant figures: a. 1000 b. 780. c. 0.00102 d. 8120

A:

Q: My Data: 0.033 g/mL Class Data: 0.02904 g/mL 0.0256 g/mL Based on my results (0.033 g/mL), is the…

A: Measurements are taken repeatedly to confirm the value obtained and to ensure that findings are of…

Q: Calculate to the correct number of significant figures. 17.6 + 2.838 + 2.3 + 110.77

A:

Q: An experiment is performed to determine if pennies are made of pure copper. The mass of 11 pennies…

A: The density of any substance is the ratio of the mass of that substance to the volume of that…

Q: metal strip is 1.11 cm long and 0.33 cm wide. The area in square centimeters to the correct number…

A: We have given that  1. A metal strip is 1.11 cm long and 0.33 cm wide. The area in square…

Q: Calculate to the correct number of significant figures. (24.6681 x 2.38) + 332.58

A: Rules for performing addition and subtraction: Addition or subtraction is performed in a general…

Q: A student is determining the density of an unknown metal with a mass of 32.56 g. The stu partially…

A: given   mass of metal= 32.56 grams volume of water= 14.78ml volume of metal + volume of water=…

Q: The density of lithium metal is 535 kg/m3 . What is this density in g/cm3?a) 0.000535 g/cm3b) 0.535…

A: 1 kilogram=1000 grams 1 meter=100 centimeter

Q: 49. Round each number to four significant figures.(a) 255.98612 (b) 0.0004893222(c) 2.900856 * 10-4…

A: The following rules can be followed to round up the final answer to the significant figures.…

Q: Conversions: include the correct number of significant digits  a. 1.2 g to ug (micrograms) b. 10.0…

A:

Q: Use prefix multipliers to express each measurement withoutany exponents.a. 38.8 * 105g b. 55.2 *…

A: The given values are in grams, second, meters, and liters respectively which are converted without…

Q: Which laboratory measurement is expressed to the correct number of significant figures? O 9.5011 °C…

A: The given value of temperature on the thermometer is 9.5011°C, time is 60 on tenths of the second…

Q: 92.0 m392.0⁢ m3 to liters

A:

Q: Decide whether each proposed multiplication or division of measurements is possible. If it is…

A: Multiplication or division of same units are possible. To do the given operation, first step is to…

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

A:

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: Round 0.00000002098 g to 2 significant figures

A: We have to round off digit to 2 Sig figs.

Q: Very large and very small numbers are easier to write in scientific notation. For example, the…

A: Exponential notation for a number can be written in such a way that large numbers are written in…

Q: A metal has a mass of 30.000g when it is placed in a graduate cylinder containing 20.0 mL of water…

A: According to Archimedes principle, the volume of solid submerged in the water is equal to the volume…

Q: Near room temperature, liquid benzene (C,H) has a density of 0.8765 g cm-3. Suppose that 0.2124 L of…

A:

Q: Use English-to-Metric and Metric-to-English conversion factors to calculate the following; round the…

A:

Q: Carry out the following mathematical operations and answer the questions that follow. 33.916 x 95.7…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: 15) Which one is the derived unit? ( 16) 17) A) Length B) mass C) Time D) Force Which one is not the…

A: Questions are about units errors and chemical and physical changes

Q: Number mm 9.997 m cm 45 mm 18 cm

A:

Q: A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 x 10 g. Use this information to answer…

A: Mole interms of mass :   mole  = given mass/ molecular mass   n = w/M    Mole interms of particles…

Q: A handbook lists the density of lead as 11.3 g/mL. Several groups of students are attempting to…

A: Group 1: Average density formula: Average density=Density(Trial I+Trial 2+ Trial 3)3 Given, The…

Q: 1) The mass of an empty graduated cylinder is 70 grams. When it is filled with 50 ml of liquid it's…

A: Mass of empty cylinder = 70 g  volume of liquid = 50mL  Mass of cylinder + mass of liquid = 120g…

Q: in scientific notation with the correct number of significant figures. a. Convert 31.7 feet into…

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: 2.66 Perform each calculation to the correct number of significant figures. a) ( b) (569.99- 233.1)…

A: Significant figures are any non zero digit.

Q: Use prefix multipliers to express each measurement without exponents.a. 38.8 * 105 g…

A: Prefix multipliers can be described as “the parts of unit which are placed before the actual units”.…

Q: (24.2)(0.0025)(6.023•10^4)= Determine the number of significant digits that would be in the answer…

A: Significant figures are used to show  the degree of accuracy of any given answer. The rules for…

Q: Compare: number of plates, N W₁ = 2.5; W₁l = 3.0 I 0.18 0.16 0.14 0.12 0.1 11 0.08 0.06 0.04 0.02 0…

A: No of plates = N = 5.54 * (Retention Time / Half of base width)2

Q: 20.4 inches to meters

A: given, 20.4 inches

Q: Convert 999  mm3/s to km3/day. (Integral or decimal)

A: Here we are required to convert the following unit  mm3/s to km3/day.

Q: A sample of an unknown metal has a mass of 35.4 g and a volume of 3.11 cm3. Calculate it's density

A:

Q: Convert 0.00260 centimeters into nanometers. C. d. Convert 23.1 °F into °C. Convert 48 miles per…

A: " Since you have asked more than 1 question in one question itself, only first three will be…

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.