# Posts by sam

Total # Posts: 5,378

**FRENCH? HELP!!!**

I only put parentheses to show you those are a must to include in my paragraph. 1.) Le 10 août, 2015, je devais emballer mon suitcase- faire les valises. 2.) Je suis allée à l'aéroport et j'ai attendu en ligne pour faire la file d'attente...

**Chemistry 2**

36.) Suppose a chemistry student discoveres that a block of pure ice is left on her porch as she goes to school one day. What will be the percent composition of the pure ice block?

**Chemistry2**

12.) Chlorine reacts with potassium bromide to produce potassium chloride and bromine. a.) write a chemical equation, using words, to represent the above chemical reaction. Answer: Chlorine + potassium bromide ==> potassium chloride + bromine (Is this correct?) b) Suppose 4...

**Chemistry2**

A student pours 200 grams of methanol, a flammable substance into the sink. Another student causes the bad situation to get evern worse by dropping a lit match into the sink. The methanol burns completely with 300 grams of oxygen from the air. What mass, in grams, is converted...

**math**

Bill can mow his mother's lawn in 45 minutes. His brother Jim can mow it in 65 minutes. How long will it take them to do it together, if each has his own lawnmower? (Record your answer in minutes rounded to one decimal place. For example, if the answer you find is 14.2835 ...

**Coding**

How do you open cmd? Thanks

**problem solving with fractions**

mr. rosen needs to make 1 1/2 times as many pizza tonight as usual because he expects ta large crowd. if he usually makes 24 pizzas, how many pizzas should mr. rosen make?

**Chemistry**

when heated, sulfuric acid will decompose into sulfur trioxide and water. Write a chemical equation, using words, to represent this chemical reaction. Identify reactants and products. (I'm having trouble identifying the reactants and products & writing the chemical ...

**Chemistry**

What is the difference between a chemical change and a chemical reaction?? My answer: A chemical change leads to a solidifed chemical reaction but more or less they are the same thing because it's a change in which one or more pure substances are converted into diffeent ...

**maths**

6months multiplied by 10 = 60 months

**geometry**

no

**Pre-Calculus**

1) j(x)=-2/3x what is j(x)'s y-intercept? answer: (0,0) 2) k(x)=4 what is k(x)'s slope? answer: 0 3) g(x)=2x-5 what are the root(s) of g(x)? 4) the slope of line p if p is perpendicular to line f are the answers i provided correct? and please help me on 3 and 4

**Maths**

In the diagram ab is a straight road and c indicate the bottom of a vertical clif in the same vertical plane as ab the angle of elevation to the top of the from a is 24 degres and from b 300m closer to the clif the angle ofg elevation is 38 degres.calculate the height of the clif

**Chemistry**

is concrete homogeneous or heterogeneous

**Math, trigonometry**

An observer in a lighthouse 47m high sights a ship at at an angle of depression of 4.25• if the the foot of the light house is at sea level how far is the ship from the foot of the lighthouse

**geometry**

If the length of the abdomen is 2.25 inches. The length of the thorax is 1.75 inches. The walking stick's abdomen is .5 inches longer than the thorax. It's abdomen is _____ time longer than its thorax.

**Math**

X=195

**Math**

Kendall knows that a 45 ounce pitcher can hold enough lemonade for 6 people at this rate how many ounces of lemonade will Kendall need to serve 26 people.

**maths**

If week 1 was the first week of 2014 (starting Saturday 4th January)), by when would you earn: a) $100 b) $500 c) $1000

**physics**

A 15.5-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 76.7 N and is directed at an angle of 27 ° above the horizontal. Determine the coefficient of kinetic friction.

**college chemistry**

A piece of wood is discovered in the Amazon with a 14C/12C that is 64.3% that of living organisms. How old is it? I have no clue how to do this please help.

**NURSING ASAP**

thankkk youuuu :)

**NURSING ASAP**

Is nursing considered a a science major because I'm taking this course called "CHEM 1001 Chemistry and the World Around Us?" and I studying nursing in college. Please be honest. Thank you! :)

**Math Important!**

Ozzie's Mother bought an assortment of greeting cards while she was at the bookstore. She bought twice as many birthday cards as anniversary cards. She bought 2 fewer anniversary cards than general greetings cards, but 2 more anniversary cards than get well cards. If she ...

**Math**

If a recipe calls for 2/3 cups of sugar but I only want to make 1/4 of the recipe, how much sugar do I need?

**chemistry**

A 8.75-L container holds a mixture of two gases at 23 °C. The partial pressures of gas A and gas B, respectively, are 0.317 atm and 0.755 atm. If 0.100 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?

**physics**

nevermind. figured out that the "mass" of the blocks are actually the weight so i unnecessarily multiplied them by 9.8

**physics**

doing webwork when i came across this question. sure i had it right but apparently im not. The weightless horizontal bar in the figure below is in equilibrium. Scale B reads 4.20 kg (N.B. as you know, the scale should read N, but no one told the manufacturer). The distances in...

**English**

What rhetorical devices were used in Lester Pearsons address on the inauguration of the national flag? I have found an alloiteration in paragraph 4 "our new flag will fly for the first time" an antithesis in para 5 and an anaphora in para 13? Are these correct?

**Chemistry**

A sodium hydroxide sample is contaminated with sodium chloride. A 0.240 gram sample of this impure sample is dissolved in water and titrated with 21.50 mL of 0.130 M H2C2O4. Calculate the percent sadium hydroxide in the impure sample [(mass of NaOH in impure sample/mass of ...

**Chemistry**

What is the octet rule? How does the rule explain the common ion of fluorine and of calcium? The octet rule is when an element contains 8 valence electrons. The rule explains the common ions of fluorine and calcium to show how much is needed to gain/lose electrons to get that ...

**Chemistry**

HEY DUDES JUST A GUY LOOKING TO INSPIRE SOME CHEMISTRY

**Physics**

You are watching your friend play hockey. In the course of the game, he strikes the puck in such a way that, when it is at its highest point, it just clears the surrounding 2.96 m high Plexiglas wall that is 14.5 m away. (Ignore any effects due to air resistance.) (a) Find the...

**physics**

A mass m = 9.0 kg is attached to the lower end of a massless string of length L = 83.0 cm. The upper end of the string is held fixed. Suppose that the mass moves in a circle at constant speed, and that the string makes an angle theta = 21 with the vertical, as shown in the ...

**Chemistry**

Just kidding. I mean 51.34L?

**Chemistry**

Does V=188.4 L?

**Math**

Give the function that describes the sequence. x y 1 1 2 1 3 1 4 1 A. 1/2x B. x C. x exponent 1 D. x exponent 0

**Math**

If k = 2, which of the following is correct? A.(10k ÷ 2) + 4 ≤ 14 B.8k + 3 = 20 C.k - 13 > -10 D.9k + 15 ≤ 31

**Amplifiers**

A particular BJT has a base DC current of 1mA and a collector DC current of 10mA . What is the DC beta for this translator?

**Chemistry**

energy required for ionisation of 0.02 gram atom of magnesium is x Kj .the amount of energy required to ionise 1 atom of magnesium is

**Social Studies**

HELP ME PLEASE!! Where is your alikeness?

**Chemistry**

If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately

**CHEMISTRY**

CHEMICAL KINETICS The rate of reaction 2N₂O5->4NO₂+O₂ can be written in three ways -d[N₂O5]/dt= k[N₂O5] d[NO₂]/dt= k'[N₂O5] d[O₂]/dt =k"[N₂O5] The relationship between k and k' and between k and k" are ?

**criminal justice**

what are all the procedlural and substantive ways that a prosecutor and a defense attorney can resolve a case before it goes to a grand jury?

**Language**

Is there any way to add bias to this question? : "How many minutes did you spend doing homework last week?"

**Economics**

A Cobb-Douglas production function for new company is given by f(x,y) 50x 2 5 y 3 5 where x represents the units of labor and y represents the units of capital. Suppose units of Labor and capital cost $100 and $200 each respectively. If the budget ...

**finance**

You decide to buy a new home for $101000.00 at 7.5% interest rate. You feel that you can afford $800.00 for a mortgage payment. You make a down payment of $10000.00 How much will you still owe after making payments for one year. Show the mortgage payment schedule with the ...

**MATH**

HOW IS ONE WHOLE,ONE TENTH,AND ONE HUNDREDTH RELATED ?

**Business**

You are correct. See pages 307-308

**programming concepts**

i need the pseudocode if someone can help

**programming concepts**

Mr. Jones always gives True/False tests to his class. His tests always have 20 ques- tions. The maximum class size is 35. He needs a program that will calculate the stu- dents’ grades based on the best score. Grade A will range from the best score, to the best score minus...

**programming concepts**

Mr. Jones always gives True/False tests to his class. His tests always have 20 ques- tions. The maximum class size is 35. He needs a program that will calculate the stu- dents’ grades based on the best score. Grade A will range from the best score, to the best score minus...

**Math**

Ethan had $8 more than Dakota. Ethan then gave 1/4 of his money to Dakota. The ratio of money Ethan had to the money Dakota had then became 5:7. How much money did Ethan give to Dakota?

**History**

Thank you !!

**History**

What was the result of the overthrow of Diem in Vietnam?

**math**

a cylinder has 2 faces and no edges.

**History**

No, I wasn't planning on doing that at all haha thank you very much !

**History**

What caused the French to pull out of Vietnam?

**Math**

Kelly makes fruit juice each morning. She uses 2 1/3 pints of strawberries and 1 2/5 pints of grapes in her juice. If she doubles her recipe, how many more points of strawberries than pints of grapes will she use?

**physics**

In a police ballistics test, a 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg block at rest. The bullet goes through the block almost instantaneously and emerges with 50.0% of its original speed. What is the speed of the block just after the bullet emerges

**Math**

HELP!!!

**Math**

2. A researcher tagged 40 giant turtles in 2008. In 2009 she returned and captured 50 turtles, 16 of which were tagged. in 2010 she returned again and captured 30 turtles 8 of which were tagged. a: Use a proportion to estimate the turtle population for 2009 b: Use a proportion...

**physics**

i did not get this . can u do little bit calculations too.

**physics**

a 4.0-kg block is moving at 5.0 m/s along a horizontal frictionless surface toward an ideal spring that is attached to a wall. After the block collides with the spring, the spring is compressed a maximum distance of 0.68 m. ) Suppose now friction is present and k = 0....

**Algebra ll**

i need help i have a polynomial f(x) whose coefficeint are real numbers. Find the remaining zeros of f. Degree 3, zeros -4,-2,-i

**phi 208**

Just War Theory asserts that military intervention

**Canadian History**

What were aboriginal peoples in Canada thinking and feeling about the nazi soviet pack in 1939? I can't find anything on it. I wanna know what the perspective of an at home aboriginal person was feeling towards the thought of another war? Please help.

**Chemistry**

Helium is collected over water at 20.°C and 1.16 atm total pressure. What total volume of gas must be collected to obtain 0.597 g of helium? (At 20.°C the vapor pressure of water is 17.5 torr.)

**Chemistry**

Moles of h2o driven off And convert grams 0.85 to moles

**Chemistry**

Determine the energy absorbed as two moles of Nitrosyl Chloride are disassociated into nitric oxide and chlorine gas (used bond energies of kJ per mole to determine your net energy released in Joules): 2NOC1(g)-->2NO(g)+C12

**Chemistry**

Determine the energy absorbed as two moles of Nitrosyl Chloride are disassociated into nitric oxide and chlorine gas (used bond energies of kJ per mole to determine your net energy released in Joules): 2NOC1(g)-->2NO(g)+C12

**CHemistry**

Given the following information calculate the heat of formation of C2H4. C2H4 + 3 O2 ¡æ 2 CO2 + 2 H2O ¥ÄH¡Æ = -414 kJ/mol C + O2 ¡æ CO2 ¥ÄH¡Æ = -393.5 kJ/mol H2 + ¨ö O2 ¡æ H2O ¥ÄH&...

**Science**

What are the four flight forces? Give a brief description of each.

**calc**

integral from 1 to x of (5/(t^3 +3))dt

**AP Chem**

Lead metal is added to a solution of hydrochloric acid. What would be the theoretical cell potential, E°, for the reaction?

**Math.**

Sky is wrong 5. is D.

**Applied Chemistry - HELP!**

Make a poster of types of product warning labels. I'm having a hard time looking up types of product warning labels. Please help and please do not just give me Google link to product label for me to look up by myself which I did but I .... having a hard time.

**History**

canada and around the time of the constitustion act i suppose to start

**History**

What were three tactics of assimilation used on aboriginals?

**Accounting**

Paid $1,200 cash to Hilldale Mall for Success Systems' share of mall advertising cost. I need to know the debit and credit.

**Accounting**

Completed a project for Chang Corporation abd received $3620 cash. I need to know the debit and credit. Thanks

**math please help**

I need help too

**Algebra**

For f(x)=(3x^2)+5and g(x)=7x-2, a. Verify: g(x + 2) ≠ g(x) + g(2). b. Find (f – g)(x). c. Using the resulting function in (b), show that (f – g)(2) = f(2) – g(2). (The work should be different for each side of the equation.) d. Is (fg)(0) =(f/g)(0)? ...

**chemistry**

Calculate the molarity of a solution made by adding 47.2g of NaNO3 to a flask and dissolving it with water to create a total volume of 1.80L .

**physics**

A 2inch diameter pipe has been chosen to pass 65 GPM. Can this diameter be used for the suction line? If not , what line diameter should be specified?

**physics**

. An open tank holding 400 cubic foot of air at atmospheric pressure at 70 degrees F and heated to 160 degree F. What is the volume of air that escapes from the tank?

**physics**

A 25HP electric motor turning a 1800 RPM will produce how many foot pounds of torque?

**math**

The ratio of Maya’s beads to Kayla’s beads was 12:7. After Maya bought another 28 beads and Kayla gave away 3/2 beads, 5/7 of Kayla’s beads were left. a) How many more beads did Maya have than Kayla in the beginning? b) Find the new ratio of Maya’s beads to...

**math**

The ratio of Maya’s beads to Kayla’s beads was 12:7. After Maya bought another 28 beads and Kayla gave away 32 beads, 57of Kayla’s beads were left. a) How many more beads did Maya have than Kayla in the beginning? b) Find the new ratio of Maya’s beads to ...

**calc**

Verify that the function satisfies the three hypotheses of Rolle's Theorem on the given interval. Then find all numbers c that satisfy the conclusion of Rolle's Theorem. (Enter your answers as a comma-separated list.) f(x) = x^3 − x^2 − 12x + 8, [0, 4]

**Math**

Choose all measurements that are equivalent to 45 meters. a 450 centimeters b 4500 centimeters c 0.045 kilometer d 0.45 kilometer e 4500 millimeters I pick b, d, e is this correct.

**Math**

What ratio is equivalent to 3/20? a 5 to 100 b 100 to 5 c 140 to 21 d 21 to 140 I picked d is this correct?

**math is my answer correct**

Is my answer correct?? The function h(t) = 2 + 50t - 1.862t^2, where h(t) is the height in metres and t is the time in seconds, models the height of a golf ball above the planet Mercury's surface during its flight. A) What is the maximum height reached by the ball? I got ...

**math**

Thank you. I moved the decimal too many places. Thanks again

**math**

A $300 mountain bike is discounted by 30% and then discounted an additional 10% for shoppers who arrive before 5am. If you go to the store at 4:30 am, how much will you pay? I did 300^30 =90. 300 -90 ==210 ^ 10 =2.10. 210-2.10= 207.90. Is this correct?

**math**

I get 2,250. Thank you Ms. Sue for making it easy to understand.

**math**

ted takes out a student loan to pay for his college tuition this year. Find the interest on the loan if he borrowed $2,500 at an annual interest rate of 6% for 15 years. Could someone help step by step, I cant seem to get it. Thank you

**math**

Ted takes out a student loan to pay for his college tuition this year. Find the interest on the loan if he borrowed $2,500 at an annual interest rate of 6% for 15 years. What is the formula to figure this out ?

**linear algebra**

Solve using the concept of rank. Is S={−16 −7 −21,2 1 3, 21 9 2} a linearly independent set of vectors in R3? So I know how to find out if this set is linearly indep. But, I don't know how to use row rank to find this out..

**math**

thank you