What is the pH of an aqueous solution with a hydrogen ion concentration of [H ] = 4.9 × 10–8 M?

what are some consequences of using community rating

Let xx be the ages of students in a class. Given the frequency distribution F(x)F(x) above, determine the following probabilities:

(a) P(x=22)=P(x=22)=

(b) P(x≥23 or x<21)=P(x≥23 or x<21)=

(c) P(20≤x<22)=P(20≤x<22)=

Colper Grant is the president of Acme Brush of Brazil, the whole owned Braziliain Subsidiary of US based Acme Brush Inc. Cooper Grant's compensation package consists of a combination of salary and bonus. His annual bonus is calculated as a predetermined percentage of the pre-tax annual income earned by Acme Brush of Brazil. A condensed income statement for Acme Brush of Brazil for the most recent year is as follows (amounts in thousands of Brazilian reals (BRL)): BRL Sales 10,000 Expenses 9,500 Pre-tax income 500 After translating the Brazilian real income statement to the US dollars, the condensed income statement for Acme Brush of Brazil appears as follows (amounts in thousand of US Dollars (USD): Sales 3,000 Expenses 3,300 Pre-tax loss -300 A. Explain how Acme Brush of Brazil's pre-tax income in BRL becamea US dollar pretax loss. In order to receive the full credit, you are required to show all steps in calculation. B. Discuss whether Cooper Grant should be paid a bonus or not...... please dont forget to clearly show the steps.. thanks:)

A small block with mass 0.0400 kg is moving in the xy-plane. The net force on the block is described by the potential- energy function U(x,y)= (6.00 J/m2 )x2-(3.40 J/m3 )

Part A

What is the magnitude of the acceleration of the block when it is at the point x= 0.31 m , y= 0.61 m ?

Part B

What is the direction of the acceleration of the block when it is at the point x= 0.31 m , y= 0.61 m ?

The addition of hydrochloric acid to a silver nitrate solution precipitates silver chloride according to the reaction: AgNO3(aq)+HCl(aq)→AgCl(s)+HNO3(aq) When you combine 90.0 mL of 0.150 M AgNO3 with 90.0 mL of 0.150 M HCl in a coffee-cup calorimeter, the temperature changes from 23.49 ∘C to 24.47 ∘C

Calculate ΔHrxn for the reaction as written. Use 1.00 g/mL as the density of the solution and C=4.18J/g⋅∘C as the specific heat capacity.

Please use c# and write a console application

Part 1) A small airline has just purchased a computer for its newly automated reservations system. You have been asked to develop a new system. You are to write an application to assign seats on each flight of the airline’s only plane. The plane has ten rows and each row has 2 seats (total capacity: 20 seats). The first five rows are for first class passengers, while the remaining rows are for economy passengers. The application is used by an airline employee who is given the task of assigning all seats to passengers (one passenger at a time). Your application should display the following alternatives: Please type 1 for First Class and Please type 2 for Economy or type 3 to see the status of all seats. If the user types 1, your application should assign a seat in the first-class section (rows 1–5). If the user types 2, your application should assign a seat in the economy section (rows 6–10).
If the user types 3, the application will display the status of all seats (“A” for available and “X” for booked) as shown below. The application will continue to ask for the user’s input until the flight is full or the user suggests that they do not want to assign anymore seats.
Availability Status:
X   X
X   X
X   A
A   A
A   A

X   X
X   X
X   X
X   X
A   A

Your application should never assign a seat that has already been assigned. When the economy section is full, your application should ask the person if it is acceptable to be placed in the first-class section (and vice versa). If yes, make the appropriate seat assignment. If no, display the message "Next flight leaves in 3 hours." You will need to use a multi-dimensional array to solve this problem. 

Part 2) Use a one-dimensional array to solve the following problem: A company pays its salespeople on a commission basis. The salespeople receive $200 per week plus 9% of their gross sales for that week. For example, a salesperson who grosses $5000 in sales in a week receives $200 plus 9% of $5000, or a total of $650. Write an application (using an array of counters) that determines how many of the salespeople earned salaries in each of the following ranges (assume that each salesperson’s salary is truncated to an integer amount):
a) $200–299
b) $300–399
c) $400–499
d) $500–599
e) $600–699
f) $700–799
g) $800–899
h) $900–999
i) $1000 and over
The application will accept sales amount until the user enters -1 to end (as shown in figure 2.1 below). At this point, the application calculates the salary and updates the appropriate counter of the array. For instance, if the salesperson gets a total salary of $565, you will update the counter that is counting totals between the $500-$599 range.

Figure 2.1. Receiving input from user

Note that you do NOT need to store the individual salary of the salesperson. Summarize the results in tabular format Use only a for loop to display the output.

Final output showing all ranges and the number of agents that received commission in that range

Two particles each with charge +2.14

Python

The following dictionary contains the list of US states with their abbreviations as keys and full names as values:

states = {
        'AK': 'Alaska',
        'AL': 'Alabama',
        'AR': 'Arkansas',
        'AS': 'American Samoa',
        'AZ': 'Arizona',
        'CA': 'California',
        'CO': 'Colorado',
        'CT': 'Connecticut',
        'DC': 'District of Columbia',
        'DE': 'Delaware',
        'FL': 'Florida',
        'GA': 'Georgia',
        'GU': 'Guam',
        'HI': 'Hawaii',
        'IA': 'Iowa',
        'ID': 'Idaho',
        'IL': 'Illinois',
        'IN': 'Indiana',
        'KS': 'Kansas',
        'KY': 'Kentucky',
        'LA': 'Louisiana',
        'MA': 'Massachusetts',
        'MD': 'Maryland',
        'ME': 'Maine',
        'MI': 'Michigan',
        'MN': 'Minnesota',
        'MO': 'Missouri',
        'MP': 'Northern Mariana Islands',
        'MS': 'Mississippi',
        'MT': 'Montana',
        'NA': 'National',
        'NC': 'North Carolina',
        'ND': 'North Dakota',
        'NE': 'Nebraska',
        'NH': 'New Hampshire',
        'NJ': 'New Jersey',
        'NM': 'New Mexico',
        'NV': 'Nevada',
        'NY': 'New York',
        'OH': 'Ohio',
        'OK': 'Oklahoma',
        'OR': 'Oregon',
        'PA': 'Pennsylvania',
        'PR': 'Puerto Rico',
        'RI': 'Rhode Island',
        'SC': 'South Carolina',
        'SD': 'South Dakota',
        'TN': 'Tennessee',
        'TX': 'Texas',
        'UT': 'Utah',
        'VA': 'Virginia',
        'VI': 'Virgin Islands',
        'VT': 'Vermont',
        'WA': 'Washington',
        'WI': 'Wisconsin',
        'WV': 'West Virginia',
        'WY': 'Wyoming'
}

Write a program that randomly displays an abbreviation from this list, and then asks the user to enter the full name that matches that abbreviation. Once the user guesses, let the user know whether they are correct or incorrect. If they are incorrect, display the correct answer to the user.

Emergency department workers are notified that researchers will be conducting research on worker efficiency. As a result, the workers are subject to:

The Hawthorne effect

Selection bias

Lack of generalizability

Heterogeneous

one environmental topic that is focused on preservation of the ecosystem, land management, sustainable resources, biomes, protection of our oceans, lakes, and rivers, or protection of endangered species ?

the subject is

B) Name and describe 3 theories of heredity that Gregor Mendel introduced to the world. Describe these 3 theories completely.

3) 500.0 mL of 0.110 M NaOH is added to 605 mL of 0.200 M weak acid (Ka = 2.35

Brooks Clinic is considering investing in new heart-monitoring equipment. It has two options. Option A would have an initial lower cost but would require a significant expenditure for rebuilding after 4 years. Option B would require no rebuilding expenditure, but its maintenance costs would be higher. Since the Option B machine is of initial higher quality, it is expected to have a salvage value at the end of its useful life. The following estimates were made of the cash flows. The company’s cost of capital is 5%. Option A Option B Initial cost $196,000 $291,000 Annual cash inflows $72,500 $82,500 Annual cash outflows $28,000 $25,600 Cost to rebuild (end of year 4) $49,100 $0 Salvage value $0 $8,500 Estimated useful life 7 years 7 years Click here to view PV table. Collapse question part (a) Compute the (1) net present value, (2) profitability index, and (3) internal rate of return for each option. (Hint: To solve for internal rate of return, experiment with alternative discount rates to arrive at a net present value of zero.) (If the net present value is negative, use either a negative sign preceding the number eg -45 or parentheses eg (45). Round answers for present value and IRR to 0 decimal places, e.g. 125 and round profitability index to 2 decimal places, e.g. 12.50. For calculation purposes, use 5 decimal places as displayed in the factor table provided.) Net Present Value Profitability Index Internal Rate of Return Option A $ % Option B $ %