9. Scientifically valid answer for, 1.5 × 10³ + 3.14 x 10ª – 1.21 × 10² А. 3.28 х 104 9. В. 3.30 х 10° C. 3.3 x 104 D. 3.30 x 105 E. 3.43 x 10°
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- 1d. 1e.Question 2. Alldredge studies the properties of marine snow in Ref. [2]. The figure below is adapted from this work, and plots the mass of different particles of fecal marine snow as a function of their volume on a log-log scale. In[Particle Mass M (ug) / (1 µg)] 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 ● 0 Fecal snow Line of best fit 2 3 4 5 In[Particle Volume V (mm³) / (1 mm³)] 61. In your pharmacy you have a balance with a sensitive requirement of 7mg; 10,25,50 and 100ml graduated cylinder; and 1 oz apothecary and 4-ounce apothecary conical cylinder. What is the minimum measurable volume in ml using the graduated cylinder?a. 5b. 20c. 1d. 2
- Write the equation in exponential fo log_(2)256=8 The equation in exponential form.At 36.0 °C the density of water is 0.9936870 g/cm3.At 37.0 °C the density of water is 0.9933390 g/cm3.Use linear interpolation to calculate the density (D) of water at 36.2 °C, to the nearest 10-7g/cm3.D =Calculate the kinetic energy of a ×9.41012kg comet moving at a speed of 39.0kms .Round your answer to 2 significant digits.
- B is a weak base with Kp = (4.11x10^-9). What is the percent ionization of a (7.060x10^-1) M solution of B? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 AnswerCalculate the electrostatic force of repulsion for two protons separated by 93.0 pm. The charge of a proton is q = 1.6 x 10-1⁹ C. Express your answer to two significant figures and include the appropriate units. Fel = μA 2.7.10 6 Submit N Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining Use the equation Fel = K(Q₁ Q₂/d²) to find the electrostatic force between the two particles. Q₁ and Q2 are the charges on the particles (charge of a proton here), and d is the distance of separation. The constant is given in the introduction and has the units Nm²/C². This means that the distance must be converted from picometers to meters using the relation 1 pm = 1 × 10¯ m. -12In our chemistry laboratory class, the formula for surface tension given is y=mg/2(pi) x r x f where y=surface tension, m= mass of the drop, g= gravitational acceleration, pi is 3.1415, r= outer radius of burette, f=correction factor. Now I searched the internet and it says that the unit for surface tension is kg x m/s^2. The problem is I have grams for the mass of the drop and that the outer radius of the burette is in centimeter while the gravitational acceleration is in meter. What will happen is like this: (1 g x 9.8 m/s^2) / 2 (3.1415) x 0.15 cm x 0.74643 (correction factor no unit) As you can see, if I don't cancel m and cm, the unit will be g x cm x m x s^2. However if change the radius of the burette into meter, it will cancel, the unit will be g x s^2 (missing meter). What can I do to get kg x m/s^2 as the unit for final answer?
- Richards and Williard determined the molar mass of lithium and collected the following data (a) Find the mean molar mass determined by these workers. (b) Find the median molar mass (c) Assuming that the currently accepted value for the molar mass of lithium is the true value, calculate the absolute error and the present relative error of the mean value determined by Richards and Williard. (f) What factors have led to changes in molar mass since 191? (g) How would you determine the accuracy of a molar mass? Experiment Molar mass, g/mol 1 6.9391 2 6.9407 3 6.9409 4 6.9399 5 6.9407 6 6. 9391 7 6. 9406When an object with an electric charge of −3.0μC is 8.0cm from an object with an electric charge of 6.0μC, the force between them has a strength of 25.28N. Calculate the strength of the force between the two objects if they are 24.cm apart. Round your answer to 2 significant digits.If 13,736 = 1.3736 x 10^n, What is the value of n? Please give the value for n