Describe Density Waves in traffic

Imagine you are driving one such car. Describe what happens before you encounter the truck, as you wait behind it, and after you pass it. Address your speed, and the "density" of the traffic around you.

consider the rotation of 50.0mL of a 0.2M HNO3 with 0.10M NaOH calculate the pH of the solution

a) before any extra NaOH has been add
b) after 50mL of NaOH
c) add 100mL of NaOH
d) add 150mL of NaOH

Which is NOT a retrieving strategy?

Which is not a possible cause of mental retardation?

A buffer solution contains 0.444 M NH4Br and 0.365 M NH3 (ammonia). Determine the pH change when 0.084 mol NaOH is added to 1.00 L of the buffer. pH after addition − pH before addition = pH change =

How does entropy drive solubility of proteins in water (or not)? Draw me a “system” of a beaker of water with and without 1) Polar solute and 2) Nonpolar solute. How does entropy change in each of the beakers before and after addition of solute?

Please answer all a,b,c,d!!!

Assume calendar year-ends for all companies and that all errors are material.

a. Quigley Down Under Co. bought a machine on January 1, 2017 for $1,400,000. The machine had an estimated residual value of $120,000 and a ten-year life. “Machine expense” was debited on the purchase date for $1,400,000. Quigley uses straight-line depreciation for all assets. The error was discovered on June 15, 2018 after the books had been closed for 2017.

What journal entry (if any) should Quigley record on 6/15/18 related to this error? (ignore taxes)

True or false:

Quigley should restate its income statements and balance sheets for all prior years affected by the error and reported in the 2018 annual report.

TRUE                                               FALSE

b. On October 1, 2017 Arrival Co. received $60,000 in advance for services the company would perform for its customers evenly over the next 12 months (beginning 10/1/17). That day, Arrival debited cash and credited revenue for $60,000, and no other entries were recorded related to this transaction. The error was not discovered until February 1, 2018 after the books had been closed for 2017. Arrival’s marginal tax rate is 30%.

What journal entry (if any) should Arrival record on 2/1/18 related to this error?

True or false : Arrival should restate its income statements and balance sheets for all prior years affected by this error and reported in the 2018 annual report.

TRUE                                               FALSE

c. On December 1, 2016 Breaking Good, Inc. paid $20,000 in advance for insurance services beginning 12/1/16 and lasting for 12 months. On that date, Breaking Good debited insurance expense for the full amount. This error is discovered on May 20, 2018 (after the books for 2017 were closed).

What journal entry (if any) should Breaking Good record on 5/20/18 related to this error? (ignore taxes)

True or false : Breaking Good should restate its income statements and balance sheets for all prior years affected by this error and reported in the 2018 annual report.

TRUE                                               FALSE

d. Person Family, Inc. began operations on 1/1/15, and used the LIFO method for inventory accounting. During 2017, the company decided to switch from LIFO to FIFO. The following income statement information (LIFO and FIFO) is available for the years 2015–2017:

LIFO Inventory Method                FIFO Inventory Method

2015 2016 2017 2015 2016 2017

Pre-tax financial income          70,000 55,000 140,000             130,000 85,000 160,000

Income tax expense, 30%        (21,000)            (16,500)            (42,000) (39,000) (25,500) (48,000)

Net Income 49,000 38,500 98,000 91,000 59,500 112,000

What journal entry should Person Family record during 2017 for the change in accounting principle from LIFO to FIFO?

True or false: Person Family should restate its income statements and balance sheets for all prior years affected by this error and reported in the 2017 annual report.

TRUE                                               FALSE

Use the following equations to calculate aspects of the incidence of a tax on demand:

Qd = 720 - 205P
Qs = -170 + 150P
Qs (with tax) = -220 + 150P

Find:

Q before tax =
Q after tax =
P before tax =
Pc =
Pp =
Tax rate (t) =
Tax revenue (TR) =
TR (coming from consumer surplus) =
TR (coming from producer surplus) =
Deadweight Loss (DW) =
DW (coming from consumer surplus) =
DW (coming from producer surplus) =

. A 35.00-mL solution of 0.2500 M HF is titrated with a standardized 0.1532 M solution of NaOH at 25 °C. The Ka value for HF is 6.8 x 10-4 . (a) What is the pH of the HF solution before titrant is added? (b) How many milliliters of titrant are required to reach the equivalence point? (c) What is the pH at 0.50 mL before the equivalence point? (d) What is the pH at the equivalence point? (e) What is the pH at 0.50 mL after the equivalence point?