1) The numbers, 1.004 and 1.20, have.. a ignificant figures respectively (c) 2 a
ID: 567516 • Letter: 1
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1) The numbers, 1.004 and 1.20, have.. a ignificant figures respectively (c) 2 and (a) 4 and 3 (b) 4 and 2 (d) 1 and2 2) The width, length, and height of a large, custom-made shipping crate are 1.22 m, 3.22 m, and o.830 m, respectively. The volume (in m) of the box using the correct number of significant figures is (a) 3.2606 (b) 3.26 (c) 3.3 (d) 3.261 3) How many significant figures should be recorded for the result of the calculation 3.91+7.21 0.3128 (a) 5 (b) 4 (d) 2 4) Express the number 0.0610 in scientific notation (a) 0.61 x 10 (b) 6.10x 10 (c) 610 x 104(d) 0.61 x 10 A sample of manganese and a sample of chromium have the same mass. The density o chromium is less than that of manganese. Which statement is true (a) The chromium sample has a larger volume (b) The manganese sample has a larger volume (c) The two samples have the same volume (d) The relative volumes cannot be predicted unless a specific shape is provided 5) Calculate the density of diethyl ether if 100 cm3 weighs 80 g. Would it float or sink water? (Density of water 1g/cm3) (a) 0.8, Sink (b) 0.8, float 6) (c) 1.25, sink(d) 1.25, float 7) You have a perfect cube of titanium that has sides with a length of 4.15 cm. The of titanium is 4.51g/cm3. What is the mass (in g) of this cube? (a) 18.7 (b) 322 (c) 0.92 (d) 1.09 An empty graduated cylinder weighs 40.0g and is filled with 40.0 cm3 of water. of lead submerged in the water brings the total volume to 60.0cm2 and the ma cylinder and contents to 80.0g. What is the density of lead in g/cm3. (a) 1.00 8) (b) 2.00 (c) 3.00 (d) 4.00Explanation / Answer
In 1.004, there one digit before the decimal looking and three digits after the seminal point with the lazy society being a non zero one. Therefore total no of significant digits is 1+3=4
In 1.20, there are two digits after decimal point and one before, therefore total no of significant digits are 2+1=3
Therefore the correct answer its option a 4,3
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