# Posts by Cj

Total # Posts: 307

**Chemistry**

A star is estimated to have a mass of 1 ? 1036 kg. Assuming it to be a sphere of average radius 7.0 105 km, calculate the average density of the star in units of grams per cubic centimeter. round to the correct number of significant figures.

**Chemistry**

If your car gets 28 miles to the gallon, how many liters of gasoline are necessary to travel 157 km?

**History**

Do you think Natural Rights have remained the same?

**history**

why would colonists resist the end of salutary neglect?

**Human Relations**

Give an example of a situation for which you think "Hey" is an inappropriate salutation and why ?

** science**

how do layers b and d compare in age? if rock layers between b and d have eroded away,what is the boundary between b and d called

**Science **

When are tides in the earth's oceans the highest

**Science**

Two ofthe inner planets ____?

**Chemistry**

"How many grams of the precipitate will form if 25.5 mL of 4.5 M solution of lead (II) nitrate is allowed to react with 35.5 mL of 3.0 M solution of potassium chloride? What is the concentration of the excess reactant after the reaction has reached completion?" I got...

**Geometry**

Find the distance CD rounded to the nearest tenth. C=(7,-4) D=(-8,-5) CD=?

**chemisry**

What is the correct way to find an equilibrium constant for the dissolution of a specific chemical at various temperatures?

**L.A.**

My choice is D. all of the above are correct

**L.A.**

Why should you avoid writing about too many events in a personal narrative? A.to avoid overwhelming the reader with too much info. B.to help you, the writer, stay on topic. C.to allow your self, the writer, room to add many details and descriptions. D. all of the above are ...

**Health**

Yay thanks a lot Chance

**Health**

Hopefully Chance is right...

**Language Arts**

I say C.

**Math**

How to solve 13.28 divided by 3

**Solid Mensuration**

A closed cylindrical container 10 feet in height and 4 feet in diameter contains water with depth of 3 feet and 5 inches. What would be the level of the water when the tank is lying in horizontal position?

**algebra**

How can you represent the terms of a sequence explicitly? How can you represent them recursively?

**Maths**

The probability that I have to wait at the traffic lights on my way to school is 0.45. Find the probability that on 3 consecutive mornings I have to wait: A) Once B) Twice

**Language arts .**

This question asks about your Independent Reading selection. You may use your reading selection to help you answer the question. Has your Independent Reading selection grabbed your attention? Tell the title and author of your selection, and then in 3–5 sentences explain ...

**Physics**

Damon, Thanks for answering my question. What I don't understand is why gravity is not an issue in this problem? Could you please explain?

**Physics**

A penguin has a mass of 13 kg. The penguin slides over the ice for a distance of 50.7 m in 1.7 s before coming to a complete stop. The penguin uniformly accelerates during the entire time period. What is the net force exerted on the penguin?

**Elementary Math**

Could you explain I am still a little confused

**Elementary Math**

Thanks

**Elementary Math**

The question stated: Write a numerator that makes the statement true. 1/2< /10 < 4/5 My answer is 7/10 am I correct< If not please explain. Thanks

**computer**

You are having problems on your Windows 7 computer and you pull up Device Manager to see if there are any alerts. Two of your devices have yellow exclamation points over them. What does this most likely indicate? A. A missing driver B. A disabled device C. A deleted device D. ...

**math**

If a polynomial equation p(x)=0 has 3+4i as a solution 3-i 4-3i 4+3i 3-4i

**math**

How are the real solutions of a quadratic equation related to the graph of the quadratic function?

**math**

How are the real solutions of a quadratic equation related to the graph of the quadratic function?

**algebra 2**

can someone help me please

**algebra 2**

A landscaper is designing a flower garden in the shape of a trapezoid. She wants the shorter base to be 3 yards greater than the height and the longer base to be 7 yards greater than the height. She wants the area to be 295 square yards. The situation is modeled by the ...

**algebra 2**

How does writing equivalent equations help you solve a system of equations?

**Chemistry**

12

**math**

The actual answer is 25!

**algebra 2**

How can you model data with a linear function? can i have example to please

**algebra 2**

How can you model data with a linear function?

**Math**

Explain how knowing that 5 divided by 8 = 0.625 helps you the decimal for 4 5/8.

**check my work**

8.d

**check my work**

8. Which of the following is a successful result of the Reconstruction? (1 point) states could limit voting rights in elections more African Americans could go to school segregation kept the races apart or separate sharecropping helped poor blacks own land 6. Which of the ...

**u.s. history**

11. Explain two ways in which sectionalism caused conflict or tension in the United States during the early 1800s. Then explain how sectionalism affects economics and politics in the United States today. (10 points)

**u.s. history**

thanks so much

**u.s. history**

Use the quote below to answer the following question. “[T]hese Powers . . . are so distributed among the Legislative, Executive, and Judicial Branches, into which the general Government is arranged, that it can never be in danger of degenerating into a monarchy, an ...

**u.s. history**

Why does George Washington support the Constitution? To what does “a Constitutional door is left open” refer?

**statistics**

Consider the events of drawing an ace, then draw another ace, followed by a queen, one at a time without replacement (from a standard deck of cards). What is the probability of drawing an ace, then another ace, then a queen? please show explanation

**math**

how do I write 6 2/3 + 3 4/5 to its simpliest form. This is how I did it. Could someone tell me if its write?. Or give me the proper steps to doing this? 6 2/3 + 3 4/5 = 20/15 + 19/15= 39/15= 2 9/15 = 2 3/5

**Chemistry**

What is the empirical formula for a molecule containing 52.20 grams manganese (Mn0 and 3.80 grams of Carbon (c)?

**science**

Fan can accelerate from the starting blocks to running 11 m/s down the track in 5 seconds. What is her acceleration?

**math**

My digits are 6,0, and 5. I'm not divisible by 5. What number am I

**math**

5 is graph b btw amy

**Statistics**

A Today/CNN/Gallup Poll of 1015 adults found that 13% approved of the job Congress was doing in 1995. Find the 95% confidence interval of the true proportion of adults who feel this way.

**chemistry to MathMate**

Ok, 5000 times bigger

**chemistry to MathMate**

It is 5 times as big...Ok so the and is 5 diameters....I got it right?

**chemistry to MathMate**

Sorry 5000nm

**chemistry to MathMate**

Length of cylinder is 5x10^–6 micrometers.

**chemistry to MathMate**

So the answer is 5nm? Please bare with me, I need to understand it.

**chemistry to MathMate**

Chemistry - CJ, Tuesday, March 31, 2015 at 10:53pm I am experiencing a major block.... I can't say.... 1micrometer= 1000nm 5micrometer= x..... because I'll get back the same thing So please help me, tell me the answer please.

**Chemistry**

I am experiencing a major block.... I can't say.... 1micrometer= 1000nm 5micrometer= x..... because I'll get back the same thing So please help me, tell me the answer please.

**Chemistry**

Chemistry - MathMate, Tuesday, March 31, 2015 at 2:56pm 1m = 1000 mm (millimeter) 1 mm = 1000 μm (micrometer) 1 μ = 1000 nm (nanometer) If the tube is 1 nm in diameter, then veryify that 5 μm = 5*1000 nm = 5000 nm = how many diameters? Chemistry - MathMate, ...

**Chemistry**

Is it 5 diameters?

**Chemistry**

Nanotubes are rolled up cylinders of graphite with diameters of about 1nanometer, and lengths in micrometers. (I) If a nanotube is 5 micrometers long, how many diameters does this represent?

**Geometry**

an architect designs a rectangular window such that the width of the window is 40 com less than the height. If the perimeter of the window is 500 cm, what are the widths and heights?

**math**

Still no answer. ....thanks 😒

**math**

Two coworkers picked up some writing instruments at the office supply store. Shane selected 3boxes of pencils and 1box of pens, paying $8. Terrell spent $6 on 1box of pencils and 1box of pens. What's the equation for shanes total cost? Equation for Terrell total cost? Thanks

**language arts**

stop putting peeps down connexus

**Math**

Since 2007, a particular fund returned 13.8% compounded monthly. How much would a $4000 investment in this fund have been worth after 4 years?

**Math**

When a number is a multiple of 6, what are the possible values for the ones digit?

**math**

If X = 4 units, Y = 11 units, and Z = 6 units, then what is the volume of the rectangular prism shown above

**math**

Bianca has a total of 25 cent. She has some nickels and pennies. How many different combinations of nickels and pennies could Bianca have?

**math**

Ms. Hernandez has 17 tomato plants that she wants to plant in rows. She will put 2 plants in some rows and 1 plant in the others. How many different ways can she plant the tomato plants?

**Chemistry**

Is there a reaction between Sodium Acetate and Copper (II) Nitrate. If so, what is the balanced equation for it? Also, what type of reaction is it does it form a precipitate?

**Chemistry HELP**

Ba(OH)2 + 2 HCl → BaCl2 + 2 H2O The reactants are present in equimolar amounts, so there is no excess or limiting reactants. (0.0500 L) x (0.600 mol/L HCl) x (2 mol H2O / 2 mol HCl) = 0.0300 mol H2O (4.184 J/g·°C) x (50.0 g + 50.0 g) x (25.82 - 21.73)°C = ...

**Chemistry**

The synthesis of zinc iodide was performed using 1.8912g of zinc and 1.5965g of iodine. Determine the limiting reactant and calculate the theoretical yield of zinc iodide in grams.

**Chemistry**

Aluminum oxide is formed by reaction of excess oxygen with aluminum. 4 Al(s) + 3 O2(g) -> 2 Al2O3(s) Calculate the mass of aluminum required to form 18.2 kg of aluminum oxide if the reaction has a percent yield of 83.4%.

**Chemistry**

Silver chromate may be prepared by the following reaction. 2 AgNO3(aq) + K2CrO4(aq) Ag2CrO4(s) + 2 KNO3(aq) Calculate the mass of silver chromate produced when 0.623 L of 1.345 M silver nitrate is reacted with 245 mL of 1.89 M potassium chromate.

**Chemistry**

Thank you for such a quick response DrBob222.

**Chemistry**

An aqueous solution of barium nitrate has a density of 1.09 g/cm3. The solution is 18.7% barium nitrate by mass. How many nitrate ions are present in 87.6 dL of this solution?

**math**

12 > 5

**coor. algebra**

Okayy so my class is doing conversions annnd.I need help ALOT. 130 meters per second into miles per hour . If you answer can you show me how you got the answer and how to know of the answer is right?

**math**

find the sum of 3/6+4/10+3/30 and reduce to lowest term

**Global Studies**

its mining!

**Physical Science**

Describe convection in a room heated by a radiator.

**physics**

A first capacitor is initially connected to potential source ?. The charged capacitor is then removed from the source and connected to a second initially uncharged capacitor. Determine the final potential across the first capacitor long after the switch is closed.

**ss --- pls check my work!!!**

Yep anonmys is right

**Math**

30

**Chemistry AP**

What are the concentrations of benzoic acid and sodium benzoate in a solution that is buffered with a pH of 4.55 and has a freezing point of -2.0 degrees Celsius? (assume complete dissociation and a density of 1.01g/mL for the solution.)

**US History**

Do the philosophies of laissez-faire and survival of the fittest explain why John D. Rockefeller succeeded in Cleveland, and was his success good for the oil industry and the American consumer? Any information would be greatly appreciated, please and thank you!

**math**

Ms. Hernandez has 17 tomato plants that she wants to plant in a rows. She will put 2 plants in some rows and 1 plant in the others. How many different ways can she plant the tomato plants?

**Physical Science**

1. Which equation correctly shows beta decay? (A) 210/82 Pb -> 209/81 Tl + 0/-1 e + y (B) 210/82 Pb -> 209/83 Bi + 0/-1 e + y (C) 210/82 Pb -> 210/83 Tl + 0/-1 e + y (D) 210/82 Pb -> 210/83 Bi + y (E) 210/82 Pb -> 210/83 Bi + 0/-1 e + y 2. The half-life if radon...

**math**

an average sized female spider and a large spider can lay a total of 2100 eggs at one time . The large spider lays 20 times the number of eggs as the average spider. How many eggs does the average spzied spider lay?

**Physical Science**

17. Why can't carbon-14 be used to determine the age of fossils that are several hundred thousand years old? Please and thank you!

**intro to computers**

lmao

**Algebra 1**

4. Two consultants were hired by a company. The total consultant fees were $18,500. If one consultant had earned $500 less, each consultant would have been paid the same. How much was each consultant paid? 6. Five cars in a race all finished within 8 seconds of each other. Car...

**Physical Science**

20. Why is ethanol added to gasoline? Can't find this answer in my book, and I've gone back and checked for it like three times. Please and thank you!

**US History**

Which of the following statements about the Platt Amendment is true? A - It guaranteed that Cuba would be independent by 1915. B - It prevented the United States from intervening in Cuban foreign affairs. C - It essentially made Cuba a U.S. protectorate. D - It opened up ...

**World History**

Even though Robespierre was not a defender of women's equality in France, how are his and Etta Pal d'Aelders's arguments similar? When might Sieyes claim that women would be eligible for the equal rights that Etta Palm d'Aelders states that they rightfully ...

**Physical Science**

5. What reactions occurs when a solution of hydrochloric acid, HCl, is mixed with a solution of calcium hydroxide, Ca(OH)2? (A) Cl + Ca(OH) --> HCa + Cl(OH)2 (B) HCl + Ca(OH)2 --> H(OH)2 + CaCl (C) 2HCl + Ca(OH)2 --> 2H2O + CaCl2 (D) 2HCl + Ca(OH)2 --> H2Ca + 2ClOH...

**Science~**

Tami is right I just did it 4/4

**chemistry**

Calculate the amount of heat required to completely sublime 76.0g of solid dry ice (CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol.

**physics**

One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a magnitude of 2.00 N and is ...