# Posts by josh

Total # Posts: 1,875

**Chemistry**

A solution of magnesium chloride, MgCl2, is prepared by dissolving 19.0g of MgCl2 in 250 mL OF water. a.) Calculate the weight percent of magnesium chloride in solution. b.)The denstiy of the above solution is 1.05 g/mL. Calculate the molarity of the magnesium chloride ...

**Chemistry**

The addition of a non-volatile, non-electrolyte will increase the amount of your vapor found above the solution over that of the pure liquid? (True or False)

**math**

Find the area of a walkway that goes around a rectangular swimming pool. The pool has a length of 30 feet and a width of 18 feet. The walkway has a width of 4 feet all around the pool.

**Physics**

For the first part of this question I got 12.12m/s B. With the help of a friend the boy measures the height to which the ball returns and finds it to be 5.2 meters. How fast was the ball moving when it left the ground? I wrote this down mass of ball: 0.40kg height if house: 7....

**Chemistry I**

In determining the heat capacity of a calorimeter, 50ml of water at 56*C is added to 50ml of water at 23*C. After about five minutes of mixing, the final temperature of the solution inside the calorimeter reached 37*C. Calculate the heat capacity of the calorimeter (J/*C-...

**Math**

3.4t+0.08=11

**Math**

-4b-5+2b=10

**Chemistry**

I titrated 0.25 grams of soda ash with 43.7 mL of HCl (0.115M) and 25 mL of H2O. I am getting over 100% sodium carbonate in my answer here are my steps that I took to get the answer can somebody help me see what I did wrong? mols HCl=(0.115M)x (0.0437L)=0.005 mol HCl 1/2 x (0....

**math**

Write a number sentence for the model. Let one white tile equal +1 and one black tile equal –1. A. –14 – (–6) = –8 B. 14 – 6 = 8 C. –14 – 6 = –8 D. –14 – (–6) = 8 i put d but it was rong

**math**

How do you round to the nearest millimetre tho...

**elementary**

use, using,eat,eating,close,moan,wave,writing,looking,dream,skate,closing,trading,cleaning,clean,write,skating,waving,look,mail,mailing. write these spelling words vowels&conosonents all spelling words are vowels.no consonents.are u correct

**math**

the turning point for y= x^2-8x+2 is: A (2,-16) B (16,2) C (8,-2) D (-8,2) E (4,-14)

**English**

Instead of telling us how much you >>repent<< your outrageous conduct why don't you sincerely try to reform? Regardless of what you may think proper I do not >>deem<< it necessary for someone of your age to wear an evening gown to the dance. The TV ...

**elementary**

explain it josh says that if he divides 50 by 5,he will get 10.jeff says he shhould get 9.who is correct?explain.

**elementary**

gabriella and 4 friends shared a pack of 15 glue sticks equally.how many giue sticks did each person get?

**3rd grade**

erica counted 45 fingers when the students were asked who wants to play kickball.how many hands went up?

**maths**

the turning point for y=x^2-8x+2 is: A: (2,-16) B: (16,2) C: (8,-2) D: (-8,2) E: (4,-14)

**maths**

for the graph y= -(x-2)squared +1: Find the x intercepts please show all working :)

**Chemistry**

1. For the reaction 2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases? A. Shift to the right B. Shift to the left C. Doubles D. Does nothing E. Halves 2. if an equilibrium reaction shifts to the right when the system is cooled, ...

**elementary**

Draw an array. Then write a fact family to describe your array

**7th grade math pygorean theroem ms.sue correct**

always draw the diagrams out, it makes the question much more clearer and easier to understand. use the basic rule of C^2 = a^2 + b^2

**AP ECE Physics**

Don't use *just* the centripetal component for μ. The real equation is: μ = a / 9.8 Do sqrt(a_c^2 + a_t^2) to find the magnitude of a.

**Live Tutoring**

Does anyone know where I can get inexpensive online tutoring that will not cost me $30.00/hr?

**Trig help?**

are these functions periodic? i - y=abs(sin(x)) = sin(x) ii - y=cos(X^2) iii - y = cos(sin(x)) I am completely lost on these :/

**Chemistry**

The volume of a sample of ideal gas at 25*C is 372ml. What will be the volume of the gas if it is heated at constant pressure to 50*C? What will be the volume of the gas if it is cooled to -272*C?

**ELEMENTARY**

How to prepare PSAT test from 3rd grade

**6th grade math**

how many hours dose it take for a rino to run 158,400 feet

**Dr. Bob, help please**

does the density of an element have anything to do with the number of elections? i have to work with a partner and his reasoning is this: "the higher the atomic number, the greater the density because the atomic number is made up of protons so the more protons there are, ...

**physics**

hello, does the density of an element have anything to do with the number of elections? i have to work with a partner and his reasoning is this: "the higher the atomic number, the greater the density because the atomic number is made up of protons so the more protons ...

**physics**

hello, does the density of an element have anything to do with the number of elections? i have to work with a partner and his reasoning is this: "the higher the atomic number, the greater the density because the atomic number is made up of protons so the more protons ...

**Calc 3**

In other words, divide the plane's normal vector so that the y components match (INCLUDING SIGN), then solve for the two remaining variables. For the example above this would mean; 2xi-j+2zk=7i+2j+3k becomes 2xi-j+2xk=(-7/2)i-j+(-3/2)k Now solve for x and z like so: 2x=(-7...

**physics (graphs)**

Hi, i'm doing a graph for density of an element as a function of atomic number. i'm trying to calculate the slope and it's asking me to include units. if density as a unit: g/cm^3, how would i write the units of the slope? which is basically density over atomic ...

**Social studies**

How were the ideas of Louis XIV and Philip II similar? How were they different?

**Social studies**

How were the ideas of Louis XIV and Philip II similar? How were they different?

**Social studies**

How were the ideas of Louis XIV similar? How were they different?

**algebra**

How do I use the distributive property to write (e+f)(-5) as an equivalent algebraic expression?

**Physics**

A gull is flying horizontally 8.17 m above the ground at 6.35 m/s. The bird is carrying a clam in its beak and plans to crack the clamshell by dropping it on some rocks below. Ignoring air resistance, what is the horizontal distance to the rocks at the moment that the gull ...

**Math**

the rectangle is 6.1 wide and 3cm high

**Math**

how could you use point I to estimate the midpoint of each side of the rectangle?

**Nutrition**

what is a vegetarian example of a complete protein?

**nutrition**

What is the role of amino acids in building protein?

**Chemistry**

Calculate the pressure and temperature at which 1.00 mole of CO gas will be in the same corresponding state as 1.00 mole of H2 gas at 2.00 bar and 30.0 degrees celsius. How do I approach this question?

**math**

divide 4 by x squared and write it in the form of axb where a and b are rational constants

**math**

A. 1,3,6,10,___,___ B. 1, 1/2, 1/4, 1/8,___,___ C. 1,3,9,27,___,___ D. 8,7,5,2,___,___ E. 49,47,52,50,55,___,___

**Physics**

A car slams on its brakes. When it slammed on its brakes, it was decelerating at 6 m per sec per sec. How high would the car have to fall from to have the same force?

**Maths**

f (x) = x2 - 4/ x2 - 1 This needs to be plotted onto a graph, but I don't know how

**physics**

62m

**chemistry**

If the half-life of a first-order decomposition reaction is 24.2 minutes, how long will it take for 10.0 moles of the reactant to decompose so that only 2.5 mol remains?

**accounting**

The following information is related to the Lilliput Veterinary Clinic for April 2010, the firm's first month of operation: Compute the cost of services rendered.

**math**

57.25 28.63 14.31

**Math**

find K so that the following function is continuous on any interval: f(x)=kx if 0¡Üx<3, and f(x)=2x^2 if 3¡Üx K=

**science**

mgco3 plus 2hcl plus mgci2 plus h2 h20 plus co2 if 10grames of c02 is produced calculate the mass of magnesium and hydrochoric acid reacted

**biology**

Very helpful... Thanks a lot...

**english11**

Which of the following phrases does NOT appear in the Declaration of Independence? life, liberty, and the pursuit of happiness all men are created equal these Colonies are, and of right ought to be, free and independent states we the people of the United States

**english 11**

4. Which of the following statements about Anne Bradstreet is NOT true? (1 point)Anne Bradstreet was never married. Anne Bradstreet was the first published poet in America. Anne Bradstreet was born and educated in England. Anne Bradstreet favored poems with regular rhyme ...

**english**

thank you!!

**english**

Which of the following statements about literary movements is NOT true? A. A literary movement is a period that shares a particular set of ideas, concerns, or characteristics. B. Ideas, concerns, or characteristics may be shared by literary movements. C. Literary movements may...

**General Mathematics**

Use a table of t-values to estimate the P-value for the specified one-mean t-test. Left-tailed test, n = 12, t = -3.412 Choose one below: P < 0.005 P > 0.005 0.005 < P < 0.01 0.01 < P < 0.025

**Algebra**

1. Determine whether the relation is a function. {(-2, -7), (3, -5), (6, -4), (9, -6), (10, -1)} 2. Determine whether the relation is a function. {(-5, -4), (-2, 9), (-1, -2), (-1, 7)} 3. Determine whether the relation is a function. {(-7, -1), (-7, 2), (-1, 8), (3, 3), (10, -...

**General Computer Science**

There are several interior routing protocols. Is there a place for each one of them? Discuss in what type of network each one would work best.

**General Economics**

• Businesses often decide between using automation and labor in production. An automotive environment may have high fixed costs and low variable costs, and an industry that utilizes manual labor for production will have low fixed costs and high variable costs. How would ...

**General Psychology**

1. Do you believe that people have an unconscious mind? If so, how does it affect thoughts, feelings, and behavior? 2) Have you ever changed a strongly held attitude? What caused the change for you? 3) Do you believe that you are free of prejudice? After reading this chapter, ...

**Accounting**

What is the purpose of financial statement analysis? What are some tools we might use to analyze financial performance? What might we use to benchmark our performance? Why?

**math**

thanks, tori

**math**

Can someone help me how to solve it. A new medically approved wheelchair was considered to be an improvement over a standard wheelchair by 325 out of 450 patients in a survery. 20) What is the margin of error for the survey? Round your ansewer to the nearest tenth of a percent.

**social studies**

the first native americans gathered what? (3 things) that's why we call them hunter-gatherers.

**English 125 introduction literature**

In your 150 words post, summarize the major similarities and differences between the forms of drama, poetry, and the short story. Demonstrate your ideas with textual examples from the course readings. In your response, include at least one example of each literary form. If you...

**physics**

Hi guyys, could you help me with this question. The center of a circular floodgate of radius 0.5 m is located in a dam at a depth of 2 m beneath the free surface of the water contained by the dam. Calculate the force exerted by the water on the floodgate. The density of water ...

**physics**

a hemispherical bowl of radius 0.5 m is filled with water of density 997 kg/m^3. calculated the force exerted by the bowl. ans: 3840 N

**physics**

Hi guyys, could you help me with this question. The center of a circular floodgate of radius 0.5 m is located in a dam at a depth of 2 m beneath the free surface of the water contained by the dam. Calculate the force exerted by the water on the floodgate. The density of water ...

**maths**

At a certain time of the day a post, 4m tall, casts a shadow of 1.8m. What is the angle of elevation of the sun at that time?

**Math**

John takes 2 hours longer than Andrew to peel 400 pounds of apples. If together they can peel 400 pounds of apples in 7 hours, then how long would it take Andrew to peal the apples working alone? Please round your answer to three decimal places.

**math**

Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 6-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water? (Please round your answer to one decimal place.)

**Math**

Steve's boat will go 14 miles per hour in still water. If he can go 13 miles downstream in the same amount of time as it takes to go 10 miles upstream, then what is the speed of the current? (Please round your answer to one decimal place.)

**Math**

6/(a^(2)+a-6) = 4/(a^(2)-9)

**Math**

12/x + 3/(x-3) = x/(x-3) - 1/11

**Math**

(b+27)/(b^(2)-1) - 1/(b+1) = (b-2)/(b-1)

**Math**

5x/(x-4) = x + 20/(x-4)

**math**

1/9 - (k+3)/(72K) = 1/(9k) - (k-1)/(8k)

**Statistics**

A researcher claims that at least 10% of all football helmets have manufacturing flaws that could potentially cause injury to the wearer. A sample of 200 helmets revealed that 24 helmets contained such defects. a. Does this finding support the researcher’s claim? Used a ...

**Chem**

How long must a current of 1.20 A pass through a sulfuric acid solution in order to produce 25.0 mL of H2 gs at 25 degrees C and 1 atm pressure?

**Statistics**

Measurements on the percentage of enrichment of 12 fuel rods used in a nuclear reactor were reported as follows; 3.11 2.88 3.08 3.01 2.84 2.86 3.04 3.09 3.08 2.89 3.12 2.98 a. Test the Hypothesis H0: µ = 2.95 versus H1: µ 0 ≠ 2.95, and draw appropriate ...

**statistics**

In a statistic class, 10 scores were randomly selected with the following results were obtained: 74, 73, 87, 57, 71, 68, 65, 77, 67, 66. What are the inner fences?

**statistics**

4-(2.33)(√.25)=2.835 ounces

**statistics**

What is square root n?

**statistics**

The diameter of small Nerf balls manufactured at a factory in China is expected to be approximately normally distributed with a mean of 5.2 inches and a standard deviation of .08 inch. Suppose a random sample of 20 balls is selected. Find the interval that contains 87% of the ...

**math**

last week Coughy worked 4 hours more than Achewy. she also worked twice as many hourse as Pokey. altogether, they earned $252. if couphy earns $6.50 per hour, Achewy earns $9 per hour, and Pokey earns $5 per hour, find the number of hours that each worked.

**math**

the hotdog shack sold 359 hotdogs during their 2-day grand opening celebration on saturday and sunday. the number of hotdogs sold on sunday was 13 less than twice the number of hotdogs sold on saturday. how many hotdogs did the hotdog shack sell on sunday?

**algebra**

math: bobby has $14 more than tina while seda has twice as much money as bobby. together they have $208. how much money does each have?

**chemistry**

2 H20, my bad

**chemistry**

What Volume of 0.575M HCl will neutralize 4.22g of Mg(OH)2? I got the BRE of 2HCl + 1Mg(OH)2 ---> 1MgCl2 + H2O, what do i do from there?

**geometry**

The equation (x + 6)2 + (y + 4)2 = 36 models the position and range of the source of a radio signal. Describe the position of the source and the range of the signals.

**Chemistry**

A sample of Hydrochloric Acid (HCl) has a concentration of 5.00 %(m/v). Determine the molar concentration of the solution.

**Algebra 2**

2(x-2) 2(180-2)=360-4=356

**algebra**

What are the vertical and horizontal asymptotes of y=(4/x-3)+2

**6 grade math**

WHAT SCHOOL DO YOU GO TO

**language arts**

It also affects the way in which one family relates to another, to the neighborhood, and to the community. What correction should be made to this sentence?

**math**

carrie says that one solution to y=3x-5 is (4,7).Describe two ways to check if her statement is true.use at least one way to check her answer.

**Chemistry (Stoichiometry)**

Thank you very much

**Chemistry (Stoichiometry)**

Two students react 15.50g of Lead (II) nitrate with 3.81g of sodium chloride. Predict the mass of the excess reactant left over when the reaction is complete.