# Posts by DANNY

Total # Posts: 869

**chemistry**

I know the molecular weights of the acids: HCl -- 36.5 H2SO4 -- 98.0 H3PO4 -- 98.0

**chemistry**

I have no idea how to begin solving these problems... Calculate the normality of a 1.0 molal solution of each of the following acids: a. HCl b. H2SO4 c. H3PO4 Calculate the molality of a 1.0 normal solution of each of the following acids: a. HCl b. H2SO4 c. H3PO4

**Math**

take the square of the 1st number & the square root of 2nd number 09+36=75 (81-6=75) 05+04=23 (25-2=23) 08+01=63 (64-1=63) 06+16=32 (36-4) 09+09=78 (81-3) 03+09=6 (9-3=6) 03+81=?? (9-9=0)

**math**

C D A D B Answers, trust.

**Physics**

If the specific volume of red brass is 0.001865 ft/3lb. What would be the density? Thanks!

**Calc**

Line L is tangent to the graph of y= x- (x^2/500) at the point Q a) find the x coordinate of point Q B) right an equation for line L C) suppose the graph above were a hill (measured in feet). There is a 50 foot tree growing vertically at the top of the hill. Does a spot light...

**Math**

Which is a molecule of phosphoric acid contains 3 atoms of hydrogen to every 4 atoms of oxygen. Could a compound containing 16 atoms of oxygen and 12 atoms of hydrogen be phosphoric acid? Explain. Mr.Lee has 3/10 of his gross salary deducted for taxes. If Mr.Lee makes $900 a ...

**algebra**

y=2x+1 yes 2x

**Question (plz read)**

NO because it must be professional

**physics**

A 2561-kg van runs into the back of a 823-kg compact car at rest. They move off together at 8.5 m/s. Assuming the friction with the road is negligible, calculate the initial speed of the van.

**physics**

A hockey player makes a slap shot, exerting a constant force of 31.4 N on the hockey puck for 0.13 s. What is the magnitude of the impulse given to the puck?

**physics**

Haloke does 179 J of work lifting himself 0.296 m. What is Haloke's mass?

**physics**

Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. (a) Calculate the speed of a 94-kg ...

**physics**

An airplane flies due south at 185 km/h relative to the air. There is a wind blowing at 68 km/h to the east relative to the ground. What are the plane's speed and direction relative to the ground?

**physics**

Tom has a mass of 69.0 kg and Sally has a mass of 54.0 kg. Tom and Sally are standing 20.0 m apart on the dance floor. Sally looks up and sees Tom. She feels an attraction. If the attraction is gravitational, find its size. Assume that both Tom and Sally can be replaced by ...

**physics**

Two balls have their centers 2.0 m apart. One ball has a mass of m1 = 8.3 kg. The other has a mass of m2 = 5.9 kg. What is the gravitational force between them? (Use G = 6.67 10-11 N · m2/kg2.)

**Chemistry**

Got it and Thank you everyone!

**Chemistry**

Tried with Image One:[(1/2)(1/2ˉ)1ˉ] Image 2:(1ˉ02) but got it wrong! any idea what it is!

**Physics**

A 225-kg crate is pushed horizontally with a force of 690 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.

**English 3**

Young Goodman Brown is a dynamic character TRUE OR FALSE

**college algebra**

An open box is made from a square piece of cardboard 20 inches on a side by cutting identical squares from the corners and turning up the sides.(a) Express the volume of the box, V , as a function of the length of the side of the square cut from each corner, x. (b) Find and ...

**College Algebra**

You plan to invest $12,000 in two funds paying 41/2% and 5% simple interest. (There is more risk in the 5% fund.) Your goal is to obtain a total annual interest income of $580 from the investment. What is the smallest amount you can invest in the 5% fund and still meet your ...

**math**

A delicatessen serves 10 kinds of sandwiches and 5 kinds of chips. How many different sandwich and chip lunches can they make if each lunch has one sandwich and one bag of chips?

**math**

Solve the problem.A collection of dimes is arranged in a triangular array with 14 coins in the base row, 13 in the next, 12 in the next, and so forth. Find the value of the collection.

**math**

If the answer is an amount of money, round to the nearest dollar.Maria has saved $420 at a bank. She wants to accumulate $1250 to attend computer camp. What percent of her goal has been reached?

**math**

What is the angle sum of a regular polygon with 7 sides

**math**

make a tally and a frequency table for the number of books read by students during the summer: 4, 5, 7, 2, 4, 5, 6, 7, 8, 4, 5, 3. how many students took part in this survey?

**math**

Attach 6 trapezoids to one hexagon for each figure Figure 1: One line of symmetry and no rotational symmetries (other than 360 degrees)

**math**

so draw my body?

**math**

One line of symmetry and no rotational symmetries (other than 360 degrees) im supposed to draw this but idk what it is

**math**

what is the diffrence between .5 percent and 50 percent

**Math**

if the ratio of the girls to boys in a classroom is 2 to 3 why isnt it correct to say 2/3 (two thirds) of the class are girls.

**Chem**

The molecular weight of CaCl2 is 110.98 g/mol. In order to make up 500.0 ml of a 0.500 M solution, you need how many g?

**physics**

A 55 kg hiker starts at an elevation of 1600 m and climbs to the top of a 3400 m peak. (a) What is the hiker's change in potential energy?

**maths**

suers!!

**Algebra**

well did u know u should find something called a tutor program to help you? IDIOTS!!!!

**gen chem**

moms?

**gen chem**

The recommended dosage of iodine-131 is uCi/kg of body weight. How many microcuries of iodine-131 are needed for a patient with the hyperthyroidism?

**Algebra II**

The first 3 terms in a geometric sequence are 1.1, 1.65, and 2.475. Part A: What is the sum of the first 6 terms of the sequence? Show your work. Part B: How does the sum of the series differ from the 6th term? Explain. Part C: If the nth term in this sequence represents the ...

**ALGEBRA**

Suppose you have a $1,000 charge on a credit card charging 1.5% monthly interest using the adjusted balance method. The minimum payment due in May is $20. How much will you save in interest charges in June by paying $40 instead? I had $8,234.65

**ALGEBRA**

Find the ending balance in an account that opens with $5,000, earns 7.5% interest compounded quarterly, and is held for 20 years. (Round your answer to the nearest cent.)

**ALGEBRA**

A certain lock has four tumblers, and each tumbler can assume three positions. How many different possibilities are there?

**ALGEBRA**

A car dealer will sell you a used car for $6,162 with $162 down and payments of $214.67 per month for 36 months. What is the simple interest rate? (Round each answer to the nearest tenth.)

**ALGEBRA**

Answer the question and tell whether it illustrates inductive or deductive reasoning. (a) What is the 50th consecutive even number?

**ALGEBRA**

Find the amount of compound interest earned in an account that opens with $23,000, earns 3.9% interest compounded daily, and is held for 15 years. Assume 360 days in a year. (Round your answer to the nearest cent.)

**ALGEBRA**

An oil-drilling company knows that it costs $28,000 to sink a test well. If oil is hit, the income for the drilling company will be $445,000. If only natural gas is hit, the income will be $145,000. If nothing is hit, there will be no income. If the probability of hitting oil ...

**ALGEBRA**

Evaluate the expression. \( _3^12 \)

**ALGEBRA**

Evaluate the expression. \( _3^10 \) \( _4^5 \) \( _1^4 \)

**Algebra II**

A cowboy is practicing his lassoing technique by lassoing the fence posts at his ranch. Consider that is lariat forms a perecly elliptical shape centered at the origin while he twirls it. If the fence posts are 2 inches in circumference and the cowboy would lik to add 5 inches...

**SUPER URGENT-- CHEMISTRY**

1. .0025 M tartric acid completely reacts with .0030 m of al bicarbonate if .913 l of co2 forms at 298 k with pressure of 1.4 ATM how much base used? 2. 3.1 x 10^23 molec of .0035 m hydriodic acid reacts with 25 g of magnesium bicarbonate how much carbon dioxide if at stp? 3. ...

**Chemistry**

URGENT!!!!! 4 questions total! 1. .0025 M tartric acid completely reacts with .0030 m of al bicarbonate if .913 l of co2 forms at 298 k with pressure of 1.4 ATM how much base used? 2. 3.1 x 10^23 molec of .0035 m hydriodic acid reacts with 25 g of magnesium bicarbonate how ...

**maths**

1.) 7:15

**stuck**

a.) as x increases by one, you multiply by the next multiple of 3 to get y. 1x3=3, 2x6=12, 3x9=27, etc. b.) if x=5 then y=75

**algebra 2**

-160, 320, -640, 1,280, -2,560, 5,120, -10,240, 20,480, -40,960, 81,920, -163,840 16th term = -163,840

**Chemistry**

In a 0.05M solution of a weak monoprotic acid,[H+]=.0018.What is its Ka?

**algabra**

find given the funcrion k described by k(x) =12x, find each of the following (a) k(-19),(b0 K (10)(c) k(21),k(-19)=

**math:(**

uhh idk i tink it divide but idk haha did u gt it rite/?

**ENGLISH: types of business writing**

Can someone check gammar, punctuatiion and structure please. Draft an email of at least four complete sentences to Deb Walker the designated trainer: Confirm the arrangements for the seminar providing only the information she needs to arrive at the right place at the right ...

**ENGLISH: types of business writing**

Changed Dear Deb: I am confirming my understanding of our arrangements as we discussed for a seminar to be held at Broadworth General Hospital on sexual harassment and unlawful discrimination in the workplace. The date is to be July 20, 2012 at 9 am in conference room 200, on ...

**ENGLISH: types of business writing**

How does the rest sound?

**ENGLISH: types of business writing**

Draft an email of at least four complete sentences to Deb Walker the designated trainer: Confirm the arrangements for the seminar providing only the information she needs to arrive at the right place at the right time. Copy both to Mr, Dittmer and Ms. Hopkins Create an ...

**ENGLISH Types of business writing**

Thanks a bunch.

**ENGLISH Types of business writing**

REVISED We have received confirmation from Jeremy Dittmer for our seminar to be held on July 20, 2012. The trainer selected is Deb Walker. Deb will proceed to the conference room at 9 am the day of the session to set up before supervisors arrive. The conference room reserved ...

**ENGLISH Types of business writing**

Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training seminar to be attended ...

**math**

A number from 11 to 24 is drawn at random. What is the probability that 18 is drawn? Write your answer as a fraction. A) 1/7 b) 1/14 C) 11/24 D) 18/14

**ENGLISH Types of business writing**

Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training seminar to be attended ...

**ENGLISH : Types of business writing**

Thanks so much.

**ENGLISH : Types of business writing**

Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training seminar to be attended ...

**ENGLISH Types of business writing**

How does this sound? Dear Mr. Dittmer: I am requesting a trainer for our seminar on sexual harassment and unlawful discrimination in the workplace for twenty of our office supervisors. Our company would like to take this opportunity to thank you for Wydade’s reliable ...

**ENGLISH Types of business writing**

Dear Mr. Dittmer: I am writing to request a trainer for our seminar on sexual harassment and unlawful discrimination in the workplace for twenty of our office supervisors. Our company would like to take this opportunity to thank you for Wydade’s reliable support in ...

**ENGLISH Types of business writing**

Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training seminar to be attended ...

**Improving your writing**

Need help with grammar, punctuation, paragraph structure. Thank you

**Improving your writing**

Need help with grammar, punctuation,

**Improving your writing**

BACKGROUND: Ten years ago, I started working as a clerk for DMD Medical Supplies. Six months ago, Liz, the human resources director, promoted me to office manager. I manage two employees: Jack and Ruth. My office provides secretarial support for the four members of the ...

**Paragraph Writing**

BACKGROUND: Ten years ago, I started working as a clerk for DMD Medical Supplies. Six months ago, Liz, the human resources director, promoted me to office manager. I manage two employees: Jack and Ruth. My office provides secretarial support for the four members of the ...

**Chem**

The actual heat of formation of MgO is -601.8 kJ/mol. Convert this to kcal/mol and calculate your % error. And list two possible sources of procedural error to account for this percentage.

**physics**

The figure is taken from a paper (Am J Sports Med 2004 32: 477) on injuries to the anterior cruciate ligament due to forces applied by the patella tendon. Take a particular case where the attachment force on the tibia is 5610N when the leg is oriented with patella tendon ...

**AP CHEMISTRY**

Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH. a)hydrobromic acid (HBr) b)chlorous acid (HClO2) c)benzoic acid (C6H5COOH)

**Calculus: Implicit**

1/2 √(3(6)+2(2)) * 3(2(2))+ 1/2 √(4(6)(2)) * 4(2)+2(6) right?

**Calculus: Implicit**

so i suppose to find slope. i have trouble this problem. my math book is not really clear. Find the slope of the tangent line to the curve √(3x+2y)+√(4xy)=11.6 at the point (6,2). √(3x+2y) is the square root(3x+2y) √(4xy)is the square root 4xy.

**Calculus Help!**

my answer was -40cos(sincos(x^5) right?

**Calculus Help!**

1. 8sin(cos(x^6)), find f'(x) 2. cos(sin(x^2)), find f'(x).

**Calculus. I need help!**

my worksheet say sin^5 x. well thanks

**Calculus. I need help!**

If f(x)=sin^5x, Find f'(x) i don't know im doing right way f'(x)= 5cosx * sin(x)

**Calculus. I need help!**

Write the composite function in the form f(g(x)). [Identify the inner function u=g(x) and the outer function y=f(u).] Then find the derivative dy/dx. y=√sinx √ is square root.

**Calculus 1 need help!**

Write the composite function in the form f(g(x)). [Identify the inner function u=g(x) and the outer function y=f(u).] Then find the derivative dy/dx. y=√sinx √ is square root.

**calculus 1 help!!**

If f(x)=(4x+8)^-2, Find f'(x)

**physics**

What are the mass and the atomic number for the anion of Cl 35?

**Chemistry**

KI+H2SO4 Write the balanced net ionic equation.

**physics**

What are the mass and the atomic number for the anion of Cl 35?

**math. need help**

United States citizens living in Switzerland must pay taxes on their income to both the United States and to Switzerland. Suppose that the United States tax is 28% of their taxable income after deducting the tax paid to Switzerland. Suppose that the tax paid to Switzerland is ...

**algebra 2**

can someone help me simplify 3/4i

**math**

Mary's test grades were 73, 86, 89, 84, and 86. Mary's teacher recorded one of her grades incorrectly. Instead of an 86, Mary's second test score should have been an 84. Which measure(s) of central tendency are affected by this change?

**Pre-cal**

How do I find the reference angle in radicals given the value of cosecant 5 pi/6?

**math**

Which of the following is the solution to the matrix equation below? [0 9 2] [18] [3 2 1] x=[5] [1 -1 0] [-1] a) [-3 -2 18] b) [-3 2 -18] c) [-3] [-2] [18] d)[-3] [2] [-18]

**math**

Use (Triangle) PQR with coordinates P(2, –1), Q(0, 5), and R(–2, 0). Which matrix expression can be used to translate (triangle)PQR 1 unit left and 3 units up?

**Math**

it costs $175 to rent a jet ski for 2 hours. it costs $300 to rent a jet ski for 4 hours. write an equation that represents y (in dollars) of renting a jet ski for x hours.

**math**

thanks for all help Ms.Sue.

**math**

Renter’s Insurance protects a person who is renting an apartment from losses or damages that can occur in the apartment setting. Give two examples of things that could happen in an apartment that would be protected by having renter’s insurance.

**math**

x^2+6x=24