Math
What is 4963rounded to the nearest hundred?
Vectors
THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a * b
Calculus and Vectors
THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a dot b
chemistry
A mixture consisting of 0.150 M N2(g) and 0.612 M H2(g) reacts and then reaches equilibrium according to the equation: N2(g) + 3H2(g) ⇋ 2NH3(g) At equilibrium, the concentration of ammonia is 0.213 M. Calculate the concentration (molarity) of H2(g) at equilibrium to 3 de...
math
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math
A restaurant offers 12 types of entrees, 6 types of appetizers, and 4 types of rice.How many meals of appetizer, entree, and rice are there?
Chemistry
Lithium metal is a highly reactive metal that oxidizes instantly in water or air. Given the data below, calculate the energy required to heat 10.0 g of Li from 150.0 °C to 200.0 °C. Molar heat capacity (solid) = 3.58 J/°C • mol Molar heat capacity (liquid) = 4...
Chemistry
Ethanol (C2H5OH) has been produced since antiquity by the fermentation of fruits and vegetables. Given the following data, if 5.87 kJ of energy are transferred to 13.3 g of frozen ethanol at -130.0 °C, what is the final temperature of the sample? Heat capacity (solid) = 0....
math
Jane decides to build a wooden pencil box. She allows 32cm along the diagonal. The width of the box is to be 8cm. find the angle that the diagonal makes with the length of the box.
Geometry
A jet is cruising at 360 mph and at an elevation of 34650 feet and on course to pass directly over a golf course. A man on the seventh green sees the jet and quickly calculated the angle of elevation to be five degrees. How long until the jet passes overhead? Nearest seconds T...
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