Thursday

April 24, 2014

April 24, 2014

Total # Posts: 1,021

**Chemistry**

I'm really not getting how to solve these chemical equations. If someone could explain to me their method of solving. I know you have to list the number of reactants and products for each side but I get confused what you add and what determines what you add. Stuff like tha...

**Chemistry**

if each "hydrogen" atom has a mass of 1g and each "carbon" atom has a mass of 12g what is the ratio of the mass of 1 mole of carbon to one mole of hydrogen

**Physics**

After driving 20.0 km west, a car turns southwest and proceeds another 80.0 km. What is the displacement (in kilometers) of the car from the point of origin (magnitude only)?

**grammar**

Trumpets and trombones are part of our band. In some ways this feels like part is a direct object, but it also seems like this could be an intransitive sentence.

**grammar**

transitive :)

**grammar**

Miss, give me that cake. In this sentence, is the subject "you" since it is imperative, or is the subject Miss. If you think of the sentence like this: (You) give me the cake, miss, it seems like it would be intransitive with an active verb. Is that right?

**Grammar**

Can What be a subject? Or is song the subject?

**Grammar**

Is it also intransitive?

**Grammar**

I'm working with linking, transitive and intransitive verbs. For this sentence, do I need to write it as a statement? I think it is a linking verb. Intransitive? "What is the most popular song in the country this week?"

**math**

A plane travels at a rate of 425 miles per hour. Write an expression to show the distance it travels, if t reprents hours.

**math**

jonna and elizabeth found a level campsite and pitched thier tent as shown below.if m <2 explain your reasoning

**math**

a man hods a rifle in a horizontal postion 4 feet above the ground and shoots the bullet with an initial velocity of 2000 fps horizontally. it may be assumed that the ground is level, what will be the horizontal distance from the man to the point at which the bullet strikes th...

**Pre algebra(3)**

$29/kg is how many cents/g

**algebra (inequalities)**

a. 120p> 175 b. p> 1.46

**Geometry**

If AB = 3x +8 and GJ = 2x +24 what is AB? AB and GJ are ||

**math **

125x.1 explain the decimal movement when multiplying by .1

**7th grade math**

500 divided by 100 explain the decimal movement when dividing by 100.

**7th grade math**

125x.1 explain the decimal movement when mutiplying by.1

**7th grade math**

50 divided by 10 EXPLAIN THE DECEMAL MOVEMENT WHEN DIVIDING BY 10.

**geometry**

In isosceles triangle ABC, AB = BC, and D is a point between A and C on AC. Can you conclude MO > ML, MN > MO, angle L > angle BDA, or angle N > angle BDC

**math**

in the question 6radical x +3 radical y -2radical y +3 radical x -radical y is the answer 9 radical x +1 radical y. i just dont get it thanks

**science**

how does the distribution of animal tissues in an organism difer from the distribution of tissues in a plant

**Math**

7a/4

**math**

what's the final answer??

**english**

I need help really quick unscrambling this word!!! AAAATTTLIIRRONNME Its two words and its the name of a mall. the first words starts with I and the second starts with M.

**math**

substitution

**math**

Solve the following linear system of equations. 3x-2y+z=2 x-y+z=2 5x+10y-5Z=10

**Math**

Let f(x)=-(x-1)^2+4 Solve f(x)=0 to find the x-intercepts

**Math**

A lottery prize worth $1,000,000 is awarded in payments of $10,000 five times a year for 20 years. Suppose the money is worth 20% compounded five times per year. What is the formula used to find the present value of the prize?

**Math**

How much would have to be invested at the end of each year at 6% interest compounded annually to pay off a debt of $80,000 in 10 years?

**Legal aspects healthcare**

You are so right. It has to be true.

**Legal aspects healthcare**

Healthcare professionals who have a “need to know” access to medical records have a legal and an ethical obligation to protect the confidentiality of the patient information. I think it is not true, right?

**chemistry **

Predict the product: hydrogen peroxide (catalyzed by manganese dioxide)

**algebra**

43-n= 27

**English**

I need to find 2 medaphors in the book Among the Enemy by Margaret Peterson Haddix. I can't find them after I've read it twice.

**Science**

Thank you. That helped a lot.

**Science**

I have to write a project proposal about the global climate crisis so I can do a report and powerpoint. I need suggestions on what to write about by answering the following questions.... How do I affect the water and carbon cycle and what can I do to lesson my negative impact ...

**Physics**

A centrifuge rotor rotating at 10700 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 2.48 m * N. 1. If the mass of the rotor is 5.61 kg and it can be approximated as a solid cylinder of radius 0.0820 m, through how many revolutions will th...

**Physics**

A bicycle with tires .064 m in diameter travels 8.1 km. 1. How many revolutions do the wheels make?

**Physics**

The blades in a blender rotate at a rate of 6500 rpm. When the motor is turned off during operation, the blades slow to rest in 2.6 s. 1. What is the angular acceleration as the blades slow down?

**Physics**

A laser beam is directed at the Moon, 380,000 km from Earth. The beam diverges at an angle of 4.6×10−5 rad. 1. What diameter spot will it make on the Moon?

**college physics**

An ideal gas (volume 1.1m3, pressure 103600 Pa, temperature 400 K) undergoes an isothermal process during which it absorbs 2000 J of heat. How much did the entropy of the system increase?

**college physics**

An ideal gas (volume 1.1m3, pressure 103600 Pa, temperature 400 K) undergoes an isothermal process during which it absorbs 2000 J of heat. How much did the entropy of the system increase?

**chemistry**

H2C=CH2(g) + H2(g) C2H6(g) Adding a small amount of platinum powder greatly increases the rate of the reaction above. How might the platinum be affecting the rate of the reaction? (Select all that apply.) 1) It increases the concentration of the reactants. 2) It increases the ...

**Math**

5/9 X (98.6 Fahrenheit - 32)=?

**Math**

5/9 (98.6 F - 32)=

**chemistry**

Write the formulas for these compounds 1. manganese (IV) oxide 2. nickel (II) chloride 3. zinc chloride

**english 11**

King Arthur legend relates to sir gawain and the green knight and monty python and the holy grail?

**Physics Homework**

The answer is b. Archimedes principle states that if the the weight of the object is smaller than the displacement of the water, then the object will rise.

**Physics**

A 0.028 kg rifle bullet traveling 210 m/s buries itself in a 3.1 kg pendulum hanging on a 2.5 m long string, which makes the pendulum swing upward in an arc. 1. Determine the vertical and horizontal components of the pendulum's displacement.

**Physics**

A tennis ball of mass= 0.058 kg and speed= 19 m/s strikes a wall at a 45 degree angle and rebounds with the same speed at 45 degrees. 1. What is the magnitude of the impulse given to the ball? 2. What is the direction of the impulse given to the ball?

**Grammer**

The smell of cooking is delicious to the hungry campers

**Chemistry**

can you explain how to determine the shape of it though?

**Chemistry**

Draw the Lewis structures for each of the following, determine the shape of the molecules. a. H2S b. CN3- c. CCl4 d.NH4 e.PO4- f.PCL3 f.SF6 and explain how do you determine the shape of it

**Physics**

A 12 kg hammer strikes a nail at a velocity of 8.2 m/s and comes to rest in a time interval of 0.0083 s. 1. What is the impulse given to the nail? 2. What is the average force acting on the nail?

**Chemistry**

Explain how shielding contributes to the atomic radius trend within a group.

**social studies**

what is the official language of the phillopines

**7th grade**

give 2 other names for 2.5 dm measurement

**lever**

What is the definition of a lever

**9th grade**

A bowler rolls a 5 kg bowling ball down a magical frictionless bowling alley. The ball accelerates at an average rate of 2 m/s^2. How much force did the bowler apply to the ball?

**Physics**

A novice skier, starting from rest, slides down a frictionless 35.0 degrees incline whose vertical height is 140 m. 1. How fast is she going when she reaches the bottom?

**orgo**

Which acid, maleic or fumaric acid appears to be more reactive to bromine addition? How does the cis/trans affect this?

**Organic Chemistry I**

Which acid, maleic or fumaric acid appears to be more reactive to bromine addition? How does the cis/trans affect this?

**3rd grade**

why did us want to buy small part of louisiana territory

**Physics**

A 87 g arrow is fired from a bow whose string exerts an average force of 105 N on the arrow over a distance of 76 cm. 1. What is the speed of the arrow as it leaves the bow?

**Physics**

A softball having a mass of 0.25 kg is pitched at 96 km/h. By the time it reaches the plate, it may have slowed by 9.0%. 1. Neglecting gravity, estimate the magnitude of the average force of air resistance during a pitch, if the distance between the plate and the pitcher is ab...

**Physics**

A novice skier, starting from rest, slides down a frictionless 35.0 degree incline whose vertical height is 140 m. 1. How fast is she going when she reaches the bottom?

**Physics**

Two railroad cars, each of mass 7350 kg and traveling 80 km/h in opposite directions, collide head-on and come to rest. 1. How much thermal energy is produced in this collision?

**Physics**

A spring has a spring stiffness constant, k, of 420 N/m . 1. How much must this spring be stretched to store 30 J of potential energy?

**Physics**

A 66 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 14 m, and falls a total of 34m. 1. Calculate the spring stiffness constant of the bungee cord, assuming Hooke's law applies. 2. Calculate the maximum acceleration she experi...

**calculus**

find the inverse of q(x)=(x-5)^2

**calculus**

find the inverse of q(x)=(x-5)^2

**algebra**

For 1983 through 1995, the amount of private donations D (in millions) allocated to education can be modeled by D= 1.78t^3-6.02t^2+ 752t+ 6701 where t is the number of years since 1983. In what year was 14.3 billion of private donations allocated to education? (My main problem...

**chemistry**

Thank you. I had quite a bit a trouble with this and appreciate the quick response.

**chemistry**

I'm kind of having difficulty with a question involving dimensional analysis. I'm confused how I would convert some units into others and what to divide. Here's the question. One 5lb Hershey's kiss is equivalent to how many little Hershey's Kisses? (1 Hersh...

**MATHEMATICS**

HOW TO SOLVE THIS EQUATION: 0.2*Z + LOG(10.2*Z)= 3.512 THANKS IN ADVANCE

**Chemistry**

Cu (I): CN- Pb2+: CN-, SO3^2-, PO3^3-,MnO4- Ca2+: CN- Al3+: CN-, SO3^2-, PO3^3-,MnO4- Cr5+: CN-, SO3^2-, PO3^3-,MnO4- Pb4+: CN- Sn2+: CN- Mn2+:MnO4- Ag+:CN-, SO3^2-, PO3^3- H+: CN-, SO3^2-, PO3^3-,MnO4-

**Math PIZZAZZ**

Yeah it's halo

**pre-algebra**

what is 6 divided by 1 5/16?

**pre-algebra**

it takes 1 cup of liqiud fertilizer to make 7 1/2 gallons of spray. How much liquid is needed to make 80 gallons of spray?

**chemistry**

Which of the following would have a positive change in standard entropy at constant temperature? Choose all that apply. A) Burning octane to form carbon dioxide gas and water vapor B) Freezing titanium C) The endothermic dissolving of ammonium nitrate solid in water D) Sublima...

**algebra**

10 2/3

**Organic Chemistry I**

You have isolated one of the isomeric dimethylcyclopentanes. on reaction it gives you 3 monochloroisomers, which of the possible pentanes is it? How do i do this? they dont give any choices, so how do i figure it out?

**Maths Calculus Derivative Integral - Urgent Please**

Use 2nd Fundamental Theorem of Calculus to find derivative of f(x) = integral of 2x^2 (at the top) to x-5 (at the bottom) of square root of Sin(x)dx

**physics**

sin of angle = opp/hyp (SOH) cos of angle = adj/hyp (CAH) tan of angle = opp/adj (TOA)

**math**

7n^2+9n+2 (7n + 2)(n + 1)

**Math**

Ok, so if I change it to 2x^2 to x-5 of square root of Sin(x)dx, does it make sense? We haven't done any examples with an x in both the top and bottom of the integral sign. Thanks

**Math**

Use 2nd Fundamental Theorem of Calculus to find derivative of f(x) = integral of 2x^2 to x-5 of square root of Sin(t)dt. Please help.

**math**

cosA = adj/hyp tanA = opp/adj sinA = opp/hyp

**Physics**

idk help

**college organic chemistry**

I mean, it's due in like 6 hours. And I still have no idea. !@#$%^& it.

**chemistry**

In which solution (acidic, basic, neutral water, or doesn't matter) is potassium bromide most soluble? a. acidic b. basic c. neutral d. doesn't matter

**chemistry**

A buffer solution is 1.00 M in NH3 and 1.10 M in NH4Cl. If 0.230 moles of NaOH are added to 1.00 L of the buffer, what is its pH? Assume the volume remains constant. Kb of NH3 = 1.8 multiplied by 10-5.

**chemistry**

How many grams of HCOOH are needed to make 3.7 liters of aqueous solution of pH=3.5? I have followed the steps for a similar problem posted;I found x to 3.16e-4 mol/L but I'm having trouble converting it to grams.

**chemistry**

x=3.6e-4 mol/L x 3.7L x 43.06g HCOOH/mol = 0.050g HCOOH. my online homework counted this as incorrect. am I not going about it the right way?

**chemistry**

I found that problem, however I'm having trouble finding the amount of gram. I found x to 3.16e-4 mol/L

**chemistry**

How many grams of HCOOH are needed to make 3.7 liters of aqueous solution of pH=3.5?

**Thermochemistry**

Path A A sample of gas in a cylinder of volume 3.96 L at 327 K and 3.28 atm expands to 7.34 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work for Path A. Answer in units of J. Path B Path B has two steps. In the first step, the gas ...

**AP Chemistry !**

Can you help me with this? If you can, do it as detail as you can. If not, you can just give me the answer, i'll try to figure how you did it :| A sample of gas in a cylinder of volume 3.96 L at 327 K and 3.28 atm expands to 7.34 L by two different pathways. Path A is an i...

**AP Chemistry**

What is the value of w (work) when 2.6 moles of H2 expands from 25 liters to 50 liters against a constant external pressure of 1 atm, then expands further from 50 to 100 liters against a constant external pressure of 0.1 atm? Answer in calories. Answer in units of cal.

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