# Posts by drew

Total # Posts: 306

**Chemistry **

Given the same reaction as before: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 Great! 3.21 moles of O2 were produced. Now, How many molecules of O2 does this number of moles represent?

**Chemistry **

Now if your lab partner determined that there were 3.824 x 1023 atoms of H in an unknown sample of C2H4Cl2, how many milligrams would the unknown sample weigh?

**Chemistry **

Now if your lab partner determined that there were 1.157 x 1020 atoms of Mn in an unknown sample of KMnO4, how many milligrams would the unknown sample weigh?

**Physics HELP**

Yessss, can someone help pleaase??

**Physics HELP**

You have a converging (convex) lens and a diverging (concave) lens and the magnitude of the focal length of each lens is 38.5 cm. (a) Determine which lens you should use in order to produce an image of a light bulb on a screen several metres away. (b) Determine how far from ...

**Math**

Mark's age, x, is 6 times his age 2 years ago. Which equation represents the statement?

**science**

Which statement most accurately compares Earth’s crust and Earth’s mantle?

**Social Studies**

Thank you

**Social Studies**

Following World War 1, which industry experienced tremendous growth in the 1920s?

**Algebra**

I need help with these Algebra problems in which I need to give the square and the cube of each expression in simplified form. 1. -2t^2k 2. 3rs^4 3. 5m^3n 4. -4x^2y^2

**Religion**

Hi Miss Sue. I'm still a little confused. How can I start off my paragraphs on how I see the Holy Spirit working through those 5?

**Religion**

Hi Ms. Sue. The website was sort of helpful. What I meant was she only wants a short paragraph of how we see the holy spirit in those 5

**Religion**

Hi Ms. Sue. My teacher only wants a small explanation of those 5.

**Religion**

Hi.I need help with this question: Do you know how the Holy Spirit works through: 1.Feeding the hungry 2.Clothing the naked 3.Welcoming the Stranger 4.Bringing comfort of Christmas to the sick 5.Bringingredients Catholic Healthcare services Can I have answers for 1 to 5 ...

**American Government**

M is right ^^ 100%

**American Government**

becky2theg is correct !

**social studies**

funny af ^

**Math(solid mensuration)**

The lateral edges of edge 8m of an oblique square prism is inclined at an angle of 30 degrees with the altitude. What is the altitude of the prism?...

**Chem**

If a reaction has a change of H of -120.0 kcals/mole and is spontaneous for all temperatures less than 200.0K, what is its ΔS?

**Math (Probability)**

I figured out number one, which would be 2/13.

**Math (Probability)**

Each of two urns contains green balls and red balls. Urn I contains 8 green balls and 12 red balls. Urn II contains 5 green balls and 8 red balls. If a ball is drawn from each urn, what is P(red and red)? A. 79/65 B. 24/65 C. 20/33* D. 2/13 You have six $1 bills, eight $5 ...

**Chemistry**

Propane gas is stored in a tank at a pressure of 15.0 atm at 22.0 °C. The tank can hold a pressure of 42.0 atm before bursting. During a fire the gas is heated to 600.0 °C. What is the gas pressure, and will the tank contain the gas without bursting? I know the ...

**Language Arts**

Thank you for getting back to me so soon! 4. C 5. B Am I correct this time? Thank you for your time. :-)

**Language Arts**

4. In which sentence does the prepositional phrase act as an adverb? A. Last Evening, Anne suffered from a headache. B. The door to the attic was left open. C. Mr. Frank discussed the problem of noise in the annex. D. He bought a drink for Mr. Dussel. *** 5. In which sentence ...

**Science**

Never mind. I was correct.

**Science**

Which type of energy in the bungee chord prevents the bungee jumper from hitting the ground after a jump? A. kinetic energy B. elastic potential energy *** C. magnetic potential energy D. thermal energy -- Side note: Please help. I am not asking for the answer, I'm simply ...

**math**

what is greatest common factor for 3 and 4?

**Art**

Thank you so much you are %100 Jon-Marc

**Chemistry**

Explain how the presence of several oxygen atoms in a compound containing an -OH group can make the compound acidic. I don't understand this because according to Arrhenius, bases have OH. And it doesn't apply to either Lewis's acid-base theories, or the Bronsted-...

**Math**

Mutiply 3/4 by 6. It may help to think about it in terms of a fraction 3/4x6/1 In this case you would end up with 18/4, an improper fraction. Some teachers may want mixed numbers (4 1/2). But in higher up math, improper fractions are mainly used. In decimals it would be .75 x ...

**Chemistry**

a. Calculate the expected freezing-point depression of a 0.200 m KNO3 solution. b. Will the value you calculated match the actual freezing-point depression for this solution? Why or why not? a). -0.372 degrees Celsius b). Possibly because not all of the substance ionizes 100% ...

**algerbra**

There is no equation that corresponds directly to parallel lines. However, when given two points for each line, the slope equation (m=y2-y1/x2-x1) can help. If after doing the equation and reducing (if necessary) you come up with the same answers, then the lines are parallel. ...

**Physics**

40 degrees*

**Physics**

Suppose a soccer player kicks the ball from a distance 30 m toward the goal. Find the initial speed of the ball if it just passes over the goal, 2.4 m above the ground, given the initial direction to be above the horizontal.

**Physics**

Yes, it does thank you!

**Physics**

could you break down this problem a little more and explain what is happening?

**Physics**

Damon, I understand finding the vertical and horizontal velocities.I start getting confused when I have to integrate the two velocities and use time to find height

**Physics**

A person wants to launch a water balloon and hit the top of a tower, 50.0 meters away. The water balloon launcher is angled at 25 degrees. The water balloon leaves the launcher at 68 m/s. If the balloon hits the top of the tower, how high was the tower?

**Science**

dick and big tits

**Language Arts**

"Pacman" is correct! :-)

**Health**

"Anonymous" is 100% correct!

**Physics**

a crane holds a 500kg wrecking ball in place using a wire with tension T1 and is horizontal to the ground. The crane swings it with a cable under tension T2. if the wire holds the ball in place so the cable forms a 20 degree angle with the vertical, determine tensions T1 and T2.

**math**

Theater Total Value of Ticket Sales A $1,600 B $2,000 C $1,800 D $4,800 E $3,200 The table above shows the total value of the ticket sales for an afternoon show in each of five movie theaters. There were 300 tickets that were sold for each theater. The tickets cost $8 for each...

**P.E....Plzzzzzzz Help me:)**

What do you know, I got a 100% as well, thanks Shawn!

**Pre-Algebra, please help!**

which of these non terminating decimals can be converted into a rational number? a. 0626226222... b. 0.0020220222... c. 0.123123123...*** d. 0.898998999... Am I correct? Thank you!

**Pre-Algebra**

At a halftime show a marching band marched in formation. The lead drummer started at a point with coordinates (-2,-5) and moved three steps up and 1 step right. Write a rule to describe the translation. What were the coordinates of the drummers final position? Please help

**Chemistry**

How much heat is needed to convert 10g ice to 10g water vapor?

**Math**

AN ATHLETIC FIELD HAS THE SHAPE OF A 40 YARD BY 100 YARD RECTANGLE WITH A SEMICIRCLE AT EACH END. A RUNNING TRACK THAT IS 10 YARDS WIDE SURROUNDS THE FIELD. FIND THE AREA OF THE ATHLETIC FIELD WITH THE TRACK INCLUDED.

**Math**

it's 87.28 just took this

**Physics Fluids**

Water is flowing through a rectangular channel that is 12 m wide with a speed of 0.75 m/s. The water then flows into four identical rectangular channels that have a width of 3.0 m. The depth of the water does not change as it flows into the four channels. What is the speed of ...

**Physics Fluids**

When a block of volume 1.00 × 10–3 m3 is hung from a spring scale, the scale reads 10.0 N. When the same block is then placed in an unknown liquid, it floats with 2/3 of its volume submerged. The density of water is 1.00 × 103 kg/m^3. Determine the density of ...

**Physics Fluids**

A column of oil of height 70.0 cm supports a column of an unknown liquid. Assume that both liquids are at rest and that the density of the oil is 840 kg/m^3. Determine the density of the unknown liquid.

**Math**

C.

**algebra**

x=4

**reading**

Comma after Skydiving, rock climbing, for the first paragraph second paragraph you need a coma after floor, chair, That is all I know

**math**

I need help with an example of at least one because I do not understand what they mean by the simple measure

**math**

Gather a set of data. Choose a small sample, between 10 and 20 pieces of data, and a simple value to measure, such as the ages of visitors in a park, or the number of text messages each person in your family receives in one day. Choose a display for your data, such as a ...

**Chemistry**

idk bruh

**algebera**

Summer, your answer would be hexagonal pyramid :-) The answers for the one that Summer was asking is 1. B 2. C 3. B 4. A 5. B 100% I guarantee

**physics**

While you are in detention after school, your teacher tells you to slide a large, 89.7 kilogram box across the floor. The coefficient of static friction (ìstatic) between the box and the floor is 0.50. Compute the force parallel to the ground (F parallel)required to ...

**Physics**

The surface area of an adult human is about 1.8m2 . Suppose a person with a skin temperature of 34 ∘C is standing nude in a room where the air is 25∘C but the walls are 17 ∘C. A) There is a "dead-air" layer next to your skin that acts as insulation...

**Health**

1. B, burned 2. A, eating patterns 3. A, heredity 3/3, 100% correct

**Chemistry 101**

A solution containing 83.100 g of sodium hydroxide [molar mass = 40.0 g/mol] was neutralised using phosphoric acid. Calculate the moles of sodium phosphate formed (assuming that the reaction goes to completion). Give your answer to three significant figures. I'm not sure ...

**NH4NO3 explosive?**

How is NH4NO3 explosive? Please explain with chemical equation. Thank you so much!

**Algebra 1 Check**

This is the last question on my homework and I wanted to know if I got it right. Thanks! Which of the following inequalities is true for all real numbers of x? a.) x^2≤x^3 b.) 2x^3≤4x^2 c.) 4x^2≤(4x)^2 d.) 4(x-3)^2≥4x^2-3 My answer: C.

**Applied Business Law - 2**

As company ombudsman, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers, decide whether there is a violation of the law, and deal with the wrongdoers accordingly. Jane, a shareholder of Goodly Corporation, alleges that its ...

**Algebra 2**

The highest speed reached by a solar powered vehicle is 48.71 mph. This record was set by a Sunracycer on June 24, 1988 in Meza, AZ. How far could this car travel in 2.5 hrs at this speed.

**Physics**

A 2.5-kg block is sliding along a rough horizontal surface and collides with a horizontal spring whose spring constant is 320 N/m. Unstretched, the spring is 20.0 cm long. The block causes the spring to compress to a length of 12.5 cm as the block temporarily comes to rest. ...

**Algebra 2**

1.) The chief designer for a large automobile company is considering 4 different radiator grills, 2 different style of headlights, and 5 different rear fender designs. If an automobile style consists of a grill, headlight, and rear fender, how many different styles of ...

**Biology**

Briefly describe how the process of dehydration synthesis creates polymers.

**MATH QUIZ PLS HELP!!!**

The answers: 1. D, 285.7 ft^2 2. B, 1536 cm^2 3. C, 803.8 in.^2 4. A, 1607.7 in.^3 5. B, 105 mm^3 6. A, 147 yd^3 7. B, 108 cm^3 8. C, 415 in^3 9. A, 628 mm^3 I swear by these answers. I got a 9/9, a 100% I'm only helping because I have a hard time with this and I'm ...

**health**

I am pretty sure it is D

**Cyber safety**

"abcd" is 100% correct :-) A 1&3 B

**Chemistry**

nv/Ns=A*e(-Hv/(KT)) K=1.381E-23 Hv= 104000/6.023e+23 A=1 vacancy density=(nv/Ns)*Cu density*(6.023e+23/Cu atomic weight)

**Chemistry**

No, I didn't find that answer.

**Chemistry**

Ev= elastic strain energy per unit vol=? Ev=(1/2)*Ey*E2(square) Ey= 8.0*10e+10 N/m2 E= 9.0e-3 so square -> E2= 8.1e-5

**Chemistry**

The Young's modulus for a material is 8.0 x 1010 N/m2. The material is stretched to a strain of 9.0 x 10-3. How much elastic energy will be expended? (Express your answer in J/m3). Answer: 3240000

**Math**

There are some caps in a box. 1/6 are red, 1/3 are blue, and 3/7 of the remainder are green. If there are 27 green caps, how many caps are there all together?

**Science**

I just got a 3/4 from using Nicky answers and they were work the wright answers would be 1.A 2.C 3.B 4.C

**Math**

Why are we teaching our kids this way of math???? So frustrating to see that we are actually making them stupid. Math is math... 2+2 will always be 4!! Teaching them to make the next tens is pointless. Go back to flash cards and teaching them mental math. It pains me to see ...

**Biology/Chem**

Soy sauce is prepared by fermenting a salted mixture of soybeans and wheat with several microorganisms including yeast over a period of 8-10 months. After the solids are removed, the resulting sauce is rich in lactic acid and ethanol. How aere these 2 compounds produced? In ...

**Chemistry**

A 50mL solution of Histidine-HCl (Histidine: pKa1=1.8, pKa2=9.2, pKa3=6.0)is titrated with 0.500M NaOH. What is the expected pH of the histidine solution at the points in the titration when 14.0mL, 26mL, and 38mL of the NaOH titrant is added?

**Chemistry**

The extracellular concentrations of Na+ and K+ are 135mM and 6mM, respectively. The intracellular concentrations of Na+ and K+ are 10mM and 105mM, respectively. The membrane potential is 75mV. For Na+/K+ ATPase, 3Na+ are exported and 2K+ are imported. Calculate the total free ...

**math**

jhy

**physics**

3.795 seconds

**mATHS**

15 tables 4 stools all up

**Algebra**

If Don Gecewicz invests $5000 at 9% interest compounded quarterly, find the amount after 4 years.

**Math**

A teacher is choosing 4 students from a class of 30 to represent the class at a science fair. In how many ways can the teacher choose the students?

**algebra**

Christine lives in Bangor, Maine , and her friend Denise Brown lives in Sioux City, Iowa. They both drive to Dade City, Florida, for the winter. The trip is 1600 miles for Christine and 1500 miles for Denise. If Christine drives 5 miles per hour faster than Denise, and if they...

**Calculus**

Evaluate the following limits (x^2 + 2x - 8)/x-2 Lim x->2

**Data Management**

Unknown

**math**

how to do pre algebra pizzazz page e 28

**Math**

"ok" is 100% correct. 1. A, box-and-whisker plot 2. D, relationship between hours in the car and distance traveled 3. A, a circle graph shows how each category of time relates to the total amount of time 4. B, only the stem-and-leaf plot 5. A, both graphs

**Math**

Raymond has exactly 360 square inches of cardboard to make a box.he wants two of the dimensions to be 6 inches and the other one to be a whole number of inches.how many different size boxes can he make?

**Math**

How many 6 inch pieces can you cut from a spool of ribbon that is 10 yards long?

**algebra**

not B, I mean A. -33

**algebra**

Find the 11th term of the arithmetic sequence 7, 4.4, 1.8, -0.8, … A. -33 B. -19 C. 33 D. 19 B

**algebra**

Find S10 for (-1) + (-7) + (-13) + (-19) +... A. 250 B. -280 C. (-23) D. 132 C.

**algebra**

Find S25 for (-7) + (-2) + 3 + 8 +... A. 1,320 B. 1,325 C. 825 D. 820 I think A

**algebra**

Find S25 for 1/2 + 1 + 3/2 + 2 +... A. 160 B. 162 C. 160.5 D. 162.5 I think D