11/19/24

Rotational Statics

A gymnast with mass mg = 43.0 kg stands on an improvised balance beam that sits on, but is not attached to, two supports. The beam has a mass mb = 113 kg and length L = 5.00 m. Each support is 1/3... more

11/19/24

Chemistry pre-Lab 12

a. Balance the following reaction in an acidic solution. Fe2+ + Cr2O7^2- → Fe3+ + Cr3+b. When a 0.80 g sample of an unknown Fe2+ salt is titrated with 0.0285 M K2Cr2O7, it is found that 59.2 mL of... more

11/19/24

Thermochemistry Exercises 11

A piece of metal (34.9 g) was heated to 95.0 degrees Celsius and then added to 550-g water having an initial temperature of 28.2 degrees Celsius. If the final temperature of the water and the metal... more

11/19/24

Thermochemistry Pre-Lab 10

A. A sample of 0.72 g of Al is reacted with 17.0 mL of 2.4 M KOH. Which one is the limiting reagent?2Al (s) + 2KOH (aq) + 6H2O (l) → 2KAl(OH)4 (aq) + 3H2 (g)B. Calculate the theoretical yield of... more

11/18/24

MultiVariable Calculus - partial derivatives

“Given the tangent plane of an implicit surface, written in the form f_x(x - x0) + f_y(y - y0) + f_z(z - z0) = 0, how do we find the line tangent to the level curve z = z0?”

11/18/24

Quantitative Analysis Chemistry

Calculate [HY3−] in a solution prepared by mixing 10.00 mL of 0.0335 M VOSO4, 9.90 mL of 0.0335 M EDTA, and 10.00 mL of buffer with a pH of 4.00. At ph 4 Values of αY4- for EDTA at 25°C and μ =... more

11/18/24

Calculus Helppppp

The strength of magnetic force varies inversely with the square of the distance between the magnets. In other words, force = k/distance^2 Suppose that when two magnets are 4 cm apart, there is a... more

11/18/24

Hydrostatic Force

The Deligne Dam on the Cayley River is built so that the wall facing the water is shaped like the region above the curve y = 0.4x^2 below the line y = 180. . (Here, distances are measured in... more

11/18/24

Physics Homework

The temperature of an oven is kept constant at 905.0 K. A hole with a diameter of 27.0 mm is drilled in the wall of the oven. How much power is emitted by this hole? Hint: consider the hole as a... more

11/18/24

y=1/2x-4 in standard form

Perpetual Inventory

Perpetual inventory using weighted averageBeginning inventory, purchases, and sales for WCS12 are as follows: DateLine Item DescriptionValue Oct. 1 Inventory 300 units at $11 Oct. 13 Sale 160... more

Accounting (LIFO)

Perpetual inventory using LIFOBeginning inventory, purchases, and sales for Item 88-HX are as follows: DateLine Item DescriptionValue July 1 Inventory 82 units @ $30 July 8 Sale 66 units July... more

Financial Accounting

eBookShow Me HowQuestion Content AreaPeriodic inventory using FIFO, LIFO, and weighted average cost methodsThe units of an item available for sale during the year were as follows: DateLine Item... more

11/17/24

Write a linear function f with f(-10)=4.5 and f(-2)=4.5

11/17/24

PHYLOGENETIC TREE Question!

In a phylogenetic tree how do you know which species are the MOST CLOSELY related to each other? If you could give an image as an example for me to see that would be great!

11/17/24

Thermochemistry Experiment 8 Excercises

A 19.80 mL solution of NaOH is required to titrate 0.6014 g KHP. How many mL of this NaOH solution required to titrate 25.0 mL of 0.10 M HCL solution? Show work!

11/17/24

Thermochemistry Pre-Lab Assignment 11

A 56.3-g sample of water was heated to 51.2 C and added to 45.8 g of 20.3 C water in a calorimeter. Assume that no heat was lost to the surroundings including the calorimeter. Assume that no heat... more

Is the mitochondria the power-house of the cell?

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