Use significant figures and correct units Calculate the potential energy of an object that has a...
Calculate with correct number of significant figures: 534.71x321.83x0.0019 7.529x10- Calculate with correct number of significant figures: 685.90 + 152.1 -0.125 I
Express your answer in SI units and to 3 significant figures. A person throws an object straight up into the air. The object reaches a maximum height of 22.0 meters. How fast was the object travelling when it left their hand? Give your answer in m/s.
The following reaction has E° = 0.260 V. Calculate AGº for this reaction with energy units of kJ. Use 3 significant figures in your answer. 2 H+(aq) + Ni(s) Ni2+(aq) + H2(g) The following reaction has E» – 0.260 v. Calculate AGⓇ for this reaction with energy units of al. Use 3 significant figures in your answer
Answer the following and round to the correct number of significant figures (don't forget units). a) 0.02123 m + 1.12 m + 0.00123 m = b) 2.3 cm - 1.23 cm + 120 cm = c) 25,430 km - 3,500 km + 200 km = d) (1.21 x 105 ) x (2.6 x 103 ) = e) 7.13 mm x 9.1 mm = f) 3.0 cm x 8.222 cm = g) 4.1 g ÷ 0.121 cm = h) 0.413 ÷...
What is the energy of a photon with wavelength 210.0nm to correct significant figures? You will receive no credit if the answer is not to correct significant figures. 9.459 x 10^-19 J 9.5 x 10^-19 J 1.226 x 10^-19 J 1.23 x 10^-19 J 9.459 x 10^-10 J 9.5 x 10^-10 J 1.226 x 10^-10 J 1.23 x 10^-10 J
Please show all work. Provide equations used for full credit. Please use correct significant figures and correct units in answers. The reaction, 2NOBr(g) = 2NO(g) + Br2(8) has an equilibrium constant, K = 0.42 at 373 K. a. Calculate Agºrxn at 373 K. b. Using the value of AHºrxn = 45.38 kJ and the AGºrxn calculated in part a, calculate the ASºrxn at 373 K.
Use units and la Report final answer with the correct number of significant figures, unit and chemical formula NSD Limiting Reactant Calculations 2 NO(g) + 5 H2(g)2 NH(g) +2 H2O(g) Starting with 75.4 g NO and 15.5 g H2, what is the theoretical yield of NHs in grams? Calculation based NO upon Calculation based upon H2 What is the limiting reactant? What is the theoretical yield?
An electron of energy 5.0 eV approaches a step potential of height 1.9 eV Calculate the probabilities that the electron will be reflected and transmitted. Express your answers using two significant figures separated by a comma.
Record the measurement to the
correct number of significant figures. ( PUT UNITS IN
ANSWER, FOR EXAMPLE - 851 mL)
Graduated cylinder 1 m 35
Part A How much energy can be obtained from conversion of 1.3 gram of mass? Express your answer to two significant figures and include the appropriate units. E = 1.2x1014 J Previous Answers Correct Part B How much mass could this energy raise to a height of 1.7 km above the Earth's surface? Express your answer to two significant figures and include the appropriate units. Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Provide...