Questions Asked on
July 14, 2016

Chemistry
N2H4 + 2H2O2= N2 + 4H2O What are the mole ratios of hydrazine (N2H4) to hydrogen peroxide (H2O2) and hydrazine to water
asked by Damon 
Chemistry
In the reaction C + O2 → CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be needed in the reaction?
asked by Mariah 
physics
A hiker begins a trip by first walking 25.0 km 45.0° south of east from her base camp.On the second day she walks 40.0 km in a direction 60.0° north of east, at which point she discovers a forest ranger’s tower.Find the magnitude of the displacement
asked by yow 
Chemistry
Why do different substances have different Rf values ? used in chromatography.
asked by Stephenie 
Math
Mr.Adams had a coin collection including only nickels, dimes, and quarters He had twice as many dimes as nickels and half as many quarters as he had nickels. If the total face value of his collection was $300.00, how many quarters did the collection
asked by Emily 
science
6.025*10^20 molecules of acetic acid are present in 500 ml of its solution .What is the concentration of the solution?
asked by Kanchan 
pre cal
The vector u = (4300, 5200) gives the number of units of two models of laptops produced by a company. The vector v = 1800, 1200 gives the prices (in dollars) of the two models of laptops, respectively. Identify the vector operation used to increase revenue
asked by will 
Science
If you weigh 300 N on earth, then what is your mass and weight in mars?
asked by Charlaine 
Math
The expenses of orphanage are party constant and partly vary as the number of the boys in the orphanage. The expenses were Rs. 10,000 for 150 boys and Rs. 8,400 for 120 boys . Find the expenses for 330 boys.
asked by Madhura 
Chemistry
1.06g of Na2CO3 is dissolved in water to make 250cm^3 solution. 10.0 cm^3 of this solution was further diluted to make 500cm^3 of 2nd solution. 25.0cm^3 of 2nd solution reacted with 28.5cm^3 of HCl. Find the concentration of HCl in mol/dm^3
asked by Gary 
Math
Line a intersects line b, forming angles of 135 degrees and 45 degrees. A third line,line c, is perpendicular to line a and forms triangle ABC. What is the measure of the angle between lines b and c? a. 35 degrees b. 45 degrees c. 90 degrees d. 135 degrees
asked by Gina 
English
1. She spoke in a very loud voice. 2. She spoke in a very high voice. 3. She spoke in a very low voice. 4. She spoke in a very soft voice. 5. She spoke with a very loud voice.  Does #1 mean #2? Can we use both #3 and #4?
asked by rfvv 
Socials Studies
Why were the rules of the bison hunt so strict? Why might some punishments involve destruction of property? The rules were so strict because it was dangerous and can cause death and serious injuries. Am I right? That's my answer for the first question and
asked by Andrea 
Microsoft Word 2013
You often insert your company's logo into documents you create. One way to make it easier for you to quickly insert it is to save the logo as a A. custom block. B. text block. C. building block. D. shortcut. My answer is C.
asked by Daniela 
math
Given that Force 1 = 70 pounds and Force 2 = 120 pounds , find the angle between the forces if the magnitude of the resultant force is 90 pounds . Round answer to the nearest degree.
asked by oleg 
Math
When an object is droped from a certain height , it's distance from the starting point varies as the square of the time it has been falling . If a body falls through 288m in 6 seconds then what is the distance covered by the object in the tenth second?
asked by Sarvesh 
Chemistry
Why water can be used as a solvent in paper chromatography?
asked by Steph 
Microsoft Word 2013
10. _______ allows you to specify how a photo is positioned in the text of your document. A. Align Photo B. Align Text C. Wrap Photo D. Wrap Text My answer is a.
asked by Daniela 
Data Analysis with spreadsheets with Lab
Using the IF function calculate the commission on sales. The commission is 6% on all sales that are at least 20% above cost.
asked by Anonymous 
algebra
A ball is launched from a slingshot. Its height, h(x), can be represented by a quadratic function in terms of time, x, in seconds. After 1 second, the ball is 148 feet in the air, after 2 seconds the ball is 272 feet in the air. Find the height in feet of
asked by Anonymous 
Microsoft Word 2013
What is the default file extension for a file saved in Word 365? A. .docext B. .doc365 C. .docx D. .doc My answer is C.
asked by Daniela 
maths
The minute hand turns through __________ degrees from the digit 2 to 11 on a clock
asked by varun 
Strayer Math
Latoya ran for president of the chess club, and she received 18 votes. There were 40 members in the club. What percentage of the club members voted for Latoya?
asked by Pearl 
medical insurance
the patient is seen by his family physician for followup treatment of recently diagnosed asthmatic bronchitis. the physician's fee is 75$. the patient copayment is 20$, and the patient is not required to pay any additional amount to provider. the payer
asked by erika 
Math
A record playa with a speed of 33 1/3 revolutions per minute, meaning that a needle in a groove around te edge of the record will make 33 and 1/3 circuits around the record in one minute. If the diameter of the record is 40 centimeters, how many
asked by Anonymous 
English
1. You had better not follow his advice. 2. You had better not obey his advice. 3. You had better not take his advice. 4. You had better not accept his advice.  Does #1 mean #2? Are both the same in meaning? What about #3 and
asked by rfvv 
physics
a motorcyclist drives from a to B with a uniform speed of 30km/h find its average speed
asked by sivapriya 
Maths
Mary has 6262 square blue tiles and a number of square red tiles. All tiles are the same size. She makes a rectangle with red tiles inside and blue tiles on the perimeter. What is the largest number of red tiles she could have used?
asked by Luvish 
Science
Calculate the amount of water produced by the combustion of 44g of propane and 16g of methane.
asked by Praneetha N Upadhyaya 
Math
On Feb. 27th, 2010, an earthquake of magnitude 8.8 occurred off the coast of Chile lasting up to 3 minutes. Five months later, a 2nd earthquake occurred with magnitude of 5.3. How much more intense was the first earthquake compared to the 2nd earthquake?
asked by Chris 
English
1. However hard you may study, you can not get a good point. 2. However hard you may study, you can not get a good grade. 3. However hard you may study, you can not get good points on the exams. 4. However hard you may study, you can not get good grades on
asked by rfvv 
pharmaceutical physical chemistry
find the density of NH3 gas at 100celsius when confined by a pressure of 1600mmHg
asked by gladiza 
Physics
A kid puts 0.12 J of energy in compressing a toy.To which height will the toy rise if the mass of the toy is 0.012kg?
asked by AlAmin 
homework
The number of bacteria in a certain population increases according to a continuous exponential growth model, with a growth rate parameter of 3.9% per hour. How many hours does it take for the size of the sample to double?
asked by Anonymous 
Math
A taco stand sells tacos with any three ingredients for a flat price of $1.25. Additional ingredients cost $0.50 each. There are ten different possible ingredients. How many different types of tacos costing $2.25 can be made at the stand? A. 160 B. 252 C.
asked by Anonymous 
English
1. He took a picture of the mountain. 11. He took two picture of the mountain. 2. He took pictures of the mountain. 3. He took many pictures of the mountain. 4. Will you take a picture of us?  Q1: Are they all grammatical?
asked by rfvv 
Business Law
he Supreme Court decision in the case of Brown v. Board of Education was important because it exhibited __________. A. the use of the affirmative action policy B. the scope of flexibility of the law C. the state's supremacy over federal rulings D. the
asked by Angela 
Health
What do obesity trends presented by surveillance systems help with? present trends in colorful, creative maps change behavior about the obesity problem in the U.S. they do not tell us much raise awareness about the obesity problem in the U.S. C?
asked by Anonymous 
Math
A record playa with a speed of 33 1/3 revolutions per minute, meaning that a needle in a groove around te edge of the record will make 33 and 1/3 circuits around the record in one minute. If the diameter of the record is 40 centimeters, how many
asked by Anonymous 
Math(help please)
Alexis has a pencil bag containing one of more of each of the following: red pens, blue pens, mechanical pencils, and black markers. He knows that there is a 4% chance he will pull a red pen out of the bag if he chooses randomly. What is the number of
asked by Anonymous 
math
a number rounds off to 4000.The digit in the hundreds place is twice the digit in the tens place.The sum of the digits is 12.The number uses only two different digits.Find the number.
asked by rosemarie 
Math
The sound intensity of a soft whisper is about 1/200000 of the sound intensity of a shout. What is the decibel level of a whisper if a shout has a loudness level of about 85 dB? L = 10log(i1/10^12)
asked by Bob 
Business Law
The concept of federal law taking precedence over state or local law is commonly called the __________. A. Preemption Doctrine B. Bill of Rights C. Due Process Clause D. Free Exercise Clause Answer :B
asked by Angela 
Maths
By how much taller is the door 2meters than the boy 78meters
asked by Miguel 
physics
a heavy object is dropped from the top of a 25 m tall building and it reaches the ground in 2.26 seconds determine the acceleration due to gravity how far did the object fall during the first second how far did the object fall during the 2nd second
asked by glenn 
Math
If the battalion of soldiers is formed into a solid square,there would be sixteen fewer men in the front than there would be if they were formed into hollow square four deep. What is the required number of the soldiers.?
asked by Nitesh 
English
1. I'm a power blogger, so I try to upload postings and pictures every day. 2. I'm a powerful blogger, so I try to upload postings and pictures every day.  Q1: Can we use 'powerful' in place of 'power'? Q2: What does 'postings' mean?
asked by rfvv 
Math
In phythagorean triplet how to find numer 7
asked by Monesh 
health communication
For your communication intervention, you are trying to get young mothers in a developing country to use more nutritious complementary food for their infants. You find that their mothersinlaw make most of the decisions, so you try to convince them first
asked by Anonymous 
MATH
if log_a 3 = log_b 27 then show that b=a^3 log_a mean log base a.
asked by Anonymous 
English
1. She pulled him gently towards her. 2. She pulled him gently towards herself.  Can we use both expressions? In Sentence 2, a reflexive pronoun is used. Is #2 correct?
asked by rfvv 
Vectors
Show that the line with parametric equations x = 6 + 8t, y = −5 + t, z = 2 + 3t does not intersect the plane with equation 2x − y − 5z − 2 = 0.
asked by Jake 
physics
A stone thrown upward at the top of the tower reaches the ground after 5 sec. A second stone is thrown down with the same speed and reaches ground in 3 sec. What is the height of the tower
asked by sai 
Geometry
Find the area of the shaded region, if the rectangle has dimensions 8m and 18m and the circle is inscribed in the rectangle. I just need an example on how to solve for this. I'm pretty bad at following without examples and my book doesn't show one.
asked by Anne 
Business Law
The __________ clauses in the Constitution collectively prohibit states from enacting laws that unduly discriminate in favor of their residents. A. Due Process B. Equal Protection C. Establishment D. Privileges and Immunities
asked by Angela 
Algebra
How far could you drive for $90?
asked by Alisa Jones 
Math
After solve a function I get these X>_1(greater than equal to) X>_3 & X>_2?what will be it's domain?
asked by X 
Math
For what value of k will the following function have yintercept of 5. log{base 3} (5x +k^2)1
asked by Stacy 
Math
Mapping Notation for y=2log _3(3x +9)2 log_3 mean log base 3
asked by Matt 
Math
If I travel 200 feet in 2.92 seconds what is speed I'm traveling at
asked by Anonymous 
pre cal
Find the angle between the vectors u and v if u = (1,4) v = (3,4) a. 155.93 b. 158.58 c. 158.13 d. 155.24 e. 157.17
asked by anna 
pre cal
Find the angle between the vectors u and v if u=i+4j and v=−i+2j.
asked by anna 
mathematics
How many numbers upto 450 are divisible by 4,6,8
asked by Sanjeevani 
Math
equation log_b a = c. a) If 0 < a < 1 < b, what can you conclude about c? b) If a < 0 < 1 < b, what can you conclude about c? Please help !
asked by Stacy 
physics
the driver of a truck going 50 mph applies the brakes giving the truck a deceleration of 4.5 m/s^2 how long will it take the truck to come to a complete stop what distance will it cover
asked by glenn 
physics
the maximum possible speed a certain car can achieve is 80 m/s (about 180 mph) the car covers a distance of 1km while accelerating up to this speed from rest how fast is the car moving at the halfway point of 500m (the answer is not 40m/s) at what point is
asked by glenn 
MATH
Suppose the annual expected mortality rate from coronary disease is 500 per 100,000 individuals. In a specific community of 600,000 individuals, how many deaths are expected to be attributed to coronary heart disease over a one year period? my work:
asked by Redgy 
English
1. I got out of my car to check the engine. 2. I got off my car to check the engine. (Are both the same? In #2, what is the part of speech of 'off'? Is 'off' an adverb or a preposition?) 3. I got out of my car to check the engine. 4. I got out of my car to
asked by rfvv 
college chemistry
prepare 0.2M phospate buffer of pH 5.7
asked by rajan 
Math
A taco stand sells tacos with any three ingredients for a flat price of $1.25. Additional ingredients cost $0.50 each. There are ten different possible ingredients. How many different types of tacos costing $2.25 can be made at the stand? A. 160 B. 252 C.
asked by Anonymous 
Sciencelight
Shawn wanted to find out which of the four materials A, B, C and D allows the most light to pass through. He was given the following items:  A torch  A ruler  A light sensor connected to a datalogger  Four different materials A, B, C and D Shawn
asked by chimingbell 
science
if the velocity of a progressive wave with a periodic frequency of 10khz is 330m/s.calculate it's wavelength.
asked by versatile 
math
What is the volume of a balikbayan box with a length of 21√5 inches, width of 12√3 inches and a height of a 25√3 inches? Thank youu!!
asked by Ari 
Math
Three dozen eggs, 25% broken. How many left? ( Answer with working outs) please.
asked by Luciana Brix 
Math
Write an equation for a log functions base 2 whose graph has the following properties: vertical asymptote of x=6 Domain of x
asked by Stacy 
Algebra
coffee shop sells small and large coffee. Each day they sell 510 cups of coffee. If the shop sells 3 times as many large cups as small cups of coffee, How many cups of each size do they sell daily?
asked by julie 
Math
If a family plans to have four kids what is the probability that they will have at least one girl
asked by Cathy 
Math
Determine u⋅v if u =5, v =3,and θ =π/3 ,where θ is the angle between u and v. A) 7.50 B) 12.99 C) 10.61 D) 10.25 E) 9.05
asked by Max 
MATH
What f1(x) of f(x)=(1/3)^x
asked by Anonymous 
physics
a sports car can accelerate fo 0 to 60 in 3.2seconds what is the acceleration of the car in m/s^2 what distance would it travel at this time
asked by glenn 
physics
a driver traveling 42 mph speeds up to 58 mph over distance of 660 feet how long does this increase in speed take what is the driver's acceleration
asked by glenn 
Calculus
How do you differentiate sin^2(cos t) My work: =2sin(cos)(cost)(sint)
asked by Nora 
Math
Write an equation for a log functions base 2 whose graph has the following properties: vertical asymptote of x=6 Domain of x
asked by Stacy 
math
A isosceles right triangle has leg of 15. What is its area
asked by jason 
MATH
true or false: log (xy) = log (x)  log(y) I don't know the the first part, but looking at the second part, wouldn't log (x)  log (y) = log x/y so based on that the first part is false?
asked by Redgy