How many significant figures are there in each of the fol- lowing quantities? (a) Distance from New York City to Wellington, New Zealand, 14,397 km (b) Average body temperature of a crocodile, 25.6 °C (c) Melting point of gold, 1064 °C (d) Diameter of an influenza virus, 0.000 01 mm (e) Radius of a phosphorus atom, 0.110 nm

Q: Scenes A–D represent atomic-scale views of different samples of substances: (a) Under one set of…

A: The changes represented in the boxes has to be given.

Q: Q8. Convert 76.8 cm to m. (a) 0.0768 m (c) 0.768 m Q9. Convert 2855 mg to kg. (a) 2.855 x 10³ kg (b)…

A: Q8.  1  cm =  0.01 m

Q: Ethylene glycol (the main component in antifreeze) has a density of 1.11 g/mL. (a) What is the mass…

A: Density, mass and volume related as  Density = mass /volume

Q: Fill in the blanks. (a) 700 m = km (b) 6.5 cm = mm (c) 610 mL = L (d) 3.4 L = mL (e) 550 g = kg (f)…

A: Fill in the blanks of the following conversions:

Q: The following statements pertain to the development of the theory of combustion by the French…

A: Given: (a) A metal is burned in a closed container, and the change in mass of the solid and volume…

Q: How many significant figures are in each number?(a) 58.31 (b) 0.00250 (c) 2.7 * 103 (d) 1 cm = 0.01…

A: a) 58.31 = There are 4 significant figures.     b) 0.00250 = There are 3 significant figures.     c)…

Q: 33. State whether each of the following conversions is possible or impossible and WHY. For any…

A: We have given five unit conversions. We have to tell whether these conversions are possible or not.…

Q: 89. The hydrogen atom has a volume of approximately 6.2 x 10-31 m². What is this volume in each…

A: Given data Volume of Hydrogen atom  V=6.2×10-31 m3 We know the following standard conversion 1 meter…

Q: Q7. Perform this calculation to the correct number of significant figures: 78.222 x (12.02 - 11.52)…

A: Question (7) Given that 78.222×12.02-11.52 To solve above problem we must solve first brackets then…

Q: An astronaut on the moon places a package on a scale and finds its weight to be 19 N. (a) What…

A: On the moon, acceleration due to gravity is (gmoon)= 1.63m/s2 We know        F= m ×(gmoon)   Given…

Q: A thermometer is taken from a room where the temperature is 18°C to the outdoors, where the…

A: The rate at which a body’s temperature changes is directly proportional to the temperature…

Q: Solve the given problem related to population growth. A city had a population of 22,400 in 2007 and…

A:

Q: A student pours 40.0 g of water at 17 degrees celsius into a beaker containing 111.2 g of water at…

A: Given that,Amount of water at 17 degree Celsius is 40.0 gAnd the amount of water again at 17 degree…

Q: 2. Report the answers of these calculations to the correct number of significant figures: (a) 5.354…

A: In this question, we have to report the answers of the given calculation to the correct number of…

Q: 14. The density of lead is 11.34 g/cm. (a) What is the volume, in cm, of 287 g of lead? (b) What is…

A: * Density=  mass / volume              d = m/v Given density of lead = 11.34 g/cm³    1)  mass of…

Q: A large piece of jewelry has a mass of 133.0 g. A graduated cylinder initially contains 49.2 mL…

A: Mass of the piece of jewelry =133.0 g The initial volume of the graduated cylinder=49.2 mL Final…

Q: Determine whether the zeros in each number are significant(A) 2050(B) 9.00 x 10^2(C) 0.0530(D)…

A: Dear student, you have not mentioned the parts for which you need answer. I am answering the first…

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: Calculate these masses. (a) What is the mass (in g) of 6.50 cm of palladium, density = 12.00 g/cm?…

A: a) Given density = 12.00 g/cm3 volume of palladium = 6.50 cm3 The formula of density is - density…

Q: A rectangular metal blockhas the following dimension: 20.0cm long, 5.10cm wide, and 2.54cm thick.…

A: A numerical problem based on density, which is to be accomplished.

Q: 2. Perform the indicated operations and give answers in the indicated unit and with the proper…

A: There are some rules of significant figures which are listed below --> 1 - All non-zero digits…

Q: A crystal of sulfur has a density of 1.94 g/cc. (a) What is the mass (in grams) of a sulfur crystal…

A:

Q: A rectangular sheet of copper has the dimension11.0 inchesby 8.50 inchesand weighs 283.5grams. (a)…

A: Given: Length (l) =11.0 inch =11.0 inch ×2.54 cm1 inch=27.94 cm Breadth (b)= 8.50 inch=8.50 inch…

Q: The world’s oceans have a combined volume of 3.204 x 10^8 miles^3. (A) If the average density of…

A: In general. density can be defined as mass of a substance per unit volume of that substance.

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.