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Solve the following problem:
Write the following number in ordinary decimal form:
43.71 × 10−4
Concept: undefined >> undefined
Solve the following problem:
Write the following number in ordinary decimal form:
0.011 × 10−3
Concept: undefined >> undefined
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Solve the following problem:
Write the following number in ordinary decimal form:
14.3 × 10−2
Concept: undefined >> undefined
Solve the following problem:
Write the following number in ordinary decimal form:
0.00477 × 105
Concept: undefined >> undefined
Solve the following problem:
Write the following number in ordinary decimal form:
5.00858585
Concept: undefined >> undefined
Solve the following problem:
Perform the following calculation. Round off your answer to two digits.
`1/(3.40xx10^24)`
Concept: undefined >> undefined
Solve the following problem:
Perform the following calculation. Round off your answer to two digits.
`33/(9.00xx10^-4)`
Concept: undefined >> undefined
Solve the following problem:
Perform the following calculation. Round off your answer to two digits.
`(1.4xx10^9)/((2.77xx10^3)(3.76xx10^5))`
Concept: undefined >> undefined
Solve the following problem:
Perform the following calculation. Round off your answer to two digits.
`((4xx10^-3)(9.9xx10^-7))/((789)(1.002xx10^-10)(0.3xx10^2))`
Concept: undefined >> undefined
Perform each of the following calculations. Round off your answers to three digits.
(3.26104) (1.54106)
Concept: undefined >> undefined
Perform the following calculation. Round off your answer to three digits.
(8.39 107) (4.53 109)
Concept: undefined >> undefined
Solve the following problem:
Perform the following calculation. Round off your answer to three digits.
`(8.94xx10^6)/(4.35xx10^4)`
Concept: undefined >> undefined
Solve the following problem:
Perform the following calculation. Round off your answer to three digits.
`((9.28xx10^9)(9.9xx10^-7))/((511)(2.98xx10^-6))`
Concept: undefined >> undefined
A 1.000 mL sample of acetone, a common solvent used as a paint remover, was placed in a small bottle whose mass was known to be 38.0015 g.
The following values were obtained when the acetone-filled bottle was weighed: 38.7798 g, 38.7795 g and 38.7801 g. How would you characterise the precision and accuracy of these measurements if the actual mass of the acetone was 0.7791 g?
Concept: undefined >> undefined
Solve the following problem:
Your laboratory partner was given the task of measuring the length of a box (approx 5 in) as accurately as possible, using a metre stick graduated in milimeters. He supplied you with the following measurements:
12.65 cm, 12.6 cm, 12.65 cm, 12.655 cm, 126.55 mm, 12 cm.
State which of the measurements you would accept, giving the reason.
Concept: undefined >> undefined
Solve the following problem:
Your laboratory partner was given the task of measuring the length of a box (approx 5 in) as accurately as possible, using a metre stick graduated in milimeters. He supplied you with the following measurements:
12.65 cm, 12.6 cm, 12.65 cm, 12.655 cm, 126.55 mm, 12 cm.
Give your reason for rejecting each of the others.
Concept: undefined >> undefined
Solve the following problem:
What weight of calcium oxide will be formed on heating 19.3 g of calcium carbonate?
(At. wt.: Ca = 40; C = 12; O = 16)
Concept: undefined >> undefined
Solve the following problem:
The hourly energy requirements of an astronaut can be satisfied by the energy released when 34 grams of sucrose are “burnt” in his body. How many grams of oxygen would be needed to be carried in space capsule to meet his requirement for one day?
Concept: undefined >> undefined
Choose the correct option.
p-orbitals are _________ in shape.
Concept: undefined >> undefined
Choose the correct option.
“No two electrons in the same atoms can have identical set of four quantum numbers”. This statement is known as -
Concept: undefined >> undefined
