Which of the following statements about the number 1.20 x 10-3 g is correct? Check all that apply.
Question 7 options:
It has three significant figures. |
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It has two significant figures. |
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It is equivalent to 1.20 micrograms. |
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It is equivalent to 1.20 milligrams. |
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It is equivalent to 1.30 mg. |
Which of the following statements about the number 1.20 x 10-3 g is correct? Check all...
Which of the following statements are correct about electrons? Check all correct statements. Question 8 options: Electrons (including their orbits) take up most of the space in an atom. The number of electrons in an atom is equal to the number of protons in that atom. The energy of electrons are quantized. The number of electrons that can fit into a shell is always two.
Please answer Which of the following statements about portfolio diversifications are correct? Check all that apply. The higher the stocks' correlation coefficients,the lower the portfolio's risk. Stocks with perfectly negatively correlated returns do not exist. By adding enough partially correlated stocks, risk can be completely eliminated The risk of a portfolio declines as the number of stocks in the portfolio increases.
Which of the following statements about the Accumulated depreciation account is (are) correct? (Check all that apply.) Accumulated depreciation is an expense account. The Accumulated depreciation account allows the original cost of the asset to remain in the plant asset account. Accumulated depreciation is a contra account. Accumulated depreciation is added to its plant asset on the income statement. Accumulated depreciation is subtracted from its plant asset on the balance sheet. Accumulated depreciation accumulates the total depreciation taken on an asset since its purchase.Explain what unearned...
Which of the following are correct statements about our present recycling process? Check all that apply. -It produces waste we must dispose of -It is difficult to recycle rare earth because they decompose in the recycling process -It is 90% energy efficient -We are able to recover 90% of all materials recycled
Which of these statements are correct about NAAQS? Check all that apply. NAAQS applies to both indoor and outdoor air It stands for National Ambient Air Quality Standards They are voluntary standards NAAQS applies to end-of-pipe emissions. NAAQS is administered by the EPA NAAQS are technology-based
Which of the following statements about lift are false? Check all that apply. Correct answers will increase your score. Incorrect answers will decrease our score. Lift and drag forces are always perpendicular Wing shape is not important for generating lift. Surface roughness doesn't impact the lift force generated by rotating/spinning objects. The area used in the definition of the lift coefficient is usually the planform area of the object (e.g, wings).
Question 7 Which of the following numbers contains the designated correct number of significant figures? 1.04 2 significant figures 0.00302 2 significant figures 0.04300 5 significant figures 156 000 3 significant figures 3.06504 significant figures Question 9 What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL? 42g 53 g 41.9 g 67.1 g 67 g
Which of the following is correct? Check all that apply. Check all that apply. copper, Cp nickel, NI lithium, Li chlorine, Ch silver, Si magnesium, Mg gold, Au tin, SN
Which of the following statements about the Aldol reaction is correct. Select all that apply. The aldol condensation reaction requires only a catalytic amount of base to form the a, -unsaturated carbonyl product In an Aldol reaction, the enolate is the electrophile that reacts with a neutral carbonyl nucleophile. Reacting 1 equivalent of LDA (lithium diisopropylamide) with 3-pentanone, the enolate will be formed quantitatively. Two equivalents of a ketone can be reacted with NaOH to form a B-hydroxycarbonyl product. Aldol...
Correct the number of significant figures in calculations which are performed incorrectly. Exercise 2.58: Problems - Significant Figures in Calculations 45.3254 x 89.00205 4034.05 0.00740 x 45.0901 = 0.334 49335 + 9061275.445 x 10-2 0.009010 x 6006.4 54.118 Check all that apply. The first calculation is performed correctly. The second calculation is performed correctly. The third calculation is performed correctly. The fourth calculation is performed correctly. Submit Previous Answers Correct Part B Correct the number of significant figures in calculations...