Questions Asked on
March 29, 2019

Chemistry
N2(g) + 3H2(g) 2NH3(g) at STP How many litres of ammonia gas is produced using 5 litres of H2? N2 + 3H2 > 2NH3  the ratio between H2 and NH3 is 3 : 2  it's given 5 litres of H2, so the volume of NH3 formed is 5/3*2 = 10/3 = 3.33 (L) Sig FIG ANSWER
asked by Lauren 
Chemistry
2 C8H18(g) + 25 O2(g) 16 CO2(g) + 18 H2O(g) at STP How many moles of O2 are needed to react with 60.0g of C8H18 (octane)? mole of 02 = 60/114 = 53 mols 2 moles of octane =25 mols of 02 0.53/2 x 25= 6.625 answer is 6.6 mols How many litres of CO2 are
asked by Lauren 
Chemistry
Zn(s) + 2HCl(l) ZnCl2(s) + H2(g) at STP What mass of zinc is needed to produce 115 mL of hydrogen?  it's given 115 mL of hydrogen, so can convert to 115/1000/22,4 = 0.0051 moles H2  the ratio between HCl and H2 is 2 : 1, so the moles of HCl needed
asked by Lauren 
chemistry
2 KOH(l) + H3PO4(l) > K2HPO4(l) + 2 H2O(l) a) How many mL of 0.450M KOH is needed to react with 60.0mL of 0.250M H3PO4? a) 0.060L x 0.250M = 0.015 mol H3PO4 0.015mol H3PO4 x 2mol KOH / 1mol H3PO4 = 0.03 mol KOH 0.03 mol KOH x 1L/0.450 mol = 0.06667L =
asked by Lauren 
Geometry
Two sides of an isosceles triangle have lengths of 3 and 10. Find the length of the third side.
asked by Vernice 
Math for oobleck
Find the values of b such that the function has the given maximum value. f(x) = −x^2 + bx − 14; Maximum value: 107 (smaller value): b= (larger value): b= oobleck said "just solve 14  b^2/4 = 107" but i really don't know how to solve what oobleck
asked by anonymous 
Physical education
Identify ten branches of physical education
asked by Aliyu gambo 
chemistry
Calculate ∆H0 for the reaction 2 N2(g) + 5 O2(g) −→ 2 N2O5(g) given the data H2(g) + 1 2 O2(g) −→ H2O(ℓ) ∆H0 f = −290 kJ/mol N2O5(g) + H2O(ℓ) −→ 2 HNO3(ℓ) ∆H0 = −77.8 kJ/mol 1 2 N2(g) + 3 2 O2(g) + 1 2 H2(g) −→ HNO3(ℓ)
asked by dayana 
Math
Application of integers practice 1.which of the following is a true statement? A.9>4 B.(10)>(2) C.(3)12
asked by help 
Math
For a certain shade of pink paint, the ratio of white paint to red paint is 5 to 2. Explain how to use the strip diagram shown below to find at least 6 different quantities of white and red paint that will be in the ratio 5 to 2 (and so will make the same
asked by Ginny 
Trigonometry
If sinA=3/5 and cosB=5/13 and if A and B are measures of two angles in Quadrant I, find the exact value of the following functions. cotB = sin2A= 3)cos(5pi/6 + B) = tan(A  pi/4) =
asked by snoopy 
trigonometry
Given tanx=8/15 when pi < x < 3pi/2, find tan x/2.
asked by snoopy 
calculus
Determine whether the sequence converges or diverges. If it converges, find the limit. (n^2)/√ (n^3+ 9n)
asked by KKK 
chemistry
A solution contains 0.142 g of dissolved lead. How many moles of sodium chloride must be added to the solution to completely precipitate all of the dissolved lead?
asked by Gabby 
HiStOrY
based on this excerpt which of the following statements is most opposed to congress stance in 1994
asked by LIL PUMP JUST GOT ROSE GOLD GRILLS AN NAILS PINK 
Calculus
Consider a rectangle cardboard box without top and bottom. The diagonal of the box has length 1. Use lagrange multipliers to find the maximum surface area of the paper used to make this box. What are the dimensions of this optimal box?
asked by ally 
Maths
The total distance from Timothy's house to school was 9.18 km.He travelled by bus for part of the journey and walked the rest of the way.The distance he walked was 7.95 km less than the distance he travelled by bus.How far did Timothy walk.
asked by Namrata uttamchandani 
us government
The power to establish local units of government such as counties and to control education are examples of
asked by Makayla 
math
How many 1inch cubes do you need to fill a cube with an edge length of 1/4 foot?
asked by gabriel 
Math
Hi! So, I'm doing a test, and I've answered all my answers except for one: Find the missing angle measure. Then classify the triangle by its measures. Because this will not let me post a photo, I will write what all the angles are: 40 degrees (less than
asked by TreatPPLHowUWant2BTreated 
science
In a cell, what is the function of the cell membrane?
asked by vfdghgh 
math
square root of 185x
asked by Ruric 
Art
What did the Vogel's artworks communicate about their historical interests? They collected works that were culturally popular. They collected works that depicted revolutions. They collected works that depicted the history of cities. ( my choice ) They
asked by Kaitlyn 
math
If a 54 pound boy falls off the top of the grand canyon which is 5996 feet deep, how many seconds will it take for him to hit the bottom?
asked by kristy 
Math
If M is the midpoint of segment XY and XM= 3x + 1 and MY=4x  2, what is the measure of XY?
asked by TeCora 
Algebra
The backtoback stem and leaf plot below shows the ages of patients seen by two doctors in a clinic one day. Compare the ages of patients of Doctor 1 and Doctor 2 using the mean and the median of each data set.
asked by Gabriel 
Social Studies
Which of the following drew tribes to migrate to europe around 300 its waterways and fertile soil its centralized government its vast trade networks its major cities
asked by Anonymous 
History
Draft a speech for a Populist politician in Georgia: The Farmers Alliance became part of a political movement that supported a third party, the Populists. If you were listening to a Populist Party politician during an election in Georgia, what would you
asked by Garcia 
"ICT"
list the use of ICT in timing and control
asked by tope 
Geometry
Help for the slope of this I get 2 and 1/3 but i need to get a negative reciprocal (4,5),(8,13)(4,9) I need to show triangle ABC is a right triangle
asked by Cindy 
Chemistry
I'm not sure how to do this one At 22 °C an excess amount of a generic metal hydroxide M(OH)2 is mixed with pure water. The resulting equilibrium solution has a pH of 10.26. What is the Ksp of the salt at 22 °C? Please help thank you!
asked by Jeffery 
English
1. He is moving in the seat. 2. He is moving on the seat. 3. He is moving at the seat. [Which prepositions can we use? Are the three have the same meaning? Which one is commonly used?]
asked by rfvv 
Career guidance
what can i do when im done with schoool
asked by sthembele 
physics
an object of mass 100kg is released from a height of 4m.calculate it's kinetic energy just before it hits the ground.take g=10m/s
asked by Anonymous 
Chemistry
1.104g of impure sample of NaNO2 was acidified and analysed using excess iodine ion. The reaction is 2HNO2+ 3H+2NO + 2H2O+I3 . Then I3 is titrated with 0.300M Na2S2O3. S2O3 2 + I3  I +S4O6 2 if the titre volume is 29.25cm3, calculate the %
asked by Neville 
math
The control group 47.26 on the pretest put it at the 26th percentile. does this percentile score represent nominal,ordinal or interval scale data?
asked by sadaqat khan 
English
1. Water freezes at zero degree. 2. Water freezes at zero degrees. [Which one is correct?] 3. My best friend has the new cellphone. 4. My best friend has a new cellphone. [What is the difference between #3 and #4? Why is 'the new cellphone' used in #3?]
asked by rfvv 
English
1. Tom 2. John 3. Bill 4. Ted 5. 6. 7. Sam 8. Don 9. Matt 10. David  Number one is Tom. Number two is John. Number 5 moved to another state. Number 6 moved to a far away state. In this case, how can we say? 1. Number 5 is empty. 2.
asked by rfvv 
AP calculus
Consider the sequence t0  3, t13^3, t23^3^3 , t33^3^3^3,….. , defined by t03 and tn+13tn for n ≥ 0. What are the last 2 digits of t33^3^3^3 ? Show that the last 10 digits of tk are the same for all k ≥ 10
asked by olivier 
English
Who is usually the intended audience
asked by A 
English Essay
Hello, I have edited my essay myself and went through Grammarly. Can you please help me reedit it. AkiwenzieDamm's Compassion for the Characters in Chloe Perfection and flaws are the opposite, surprisingly they also go handinhand with each other as
asked by Sarah 
Programming
1. Create a pseudocode algorithm that will accept the name of the motorists and the type of offence for the ticket. Determine if the tickets will be awarded a demerit point and check the current point(s) each motorist has on his or her licence. Display the
asked by azikeecampbell 
math
Andrew has 45 rock songs, 82 dance songs, ad 65 rap songs on his play list. If his music player randomly selects a song, what is the probability that it is not a dance song?
asked by matt 
History
What destroyed much of Georgia's cotton crop in the early 1900s?
asked by Khaliyl 
math
Stephanie has a bag of individual star stickers she is using on her birthday party invitations. Which of these images shows that the probability of randomly choosing a yellow sticker next is 3/12?
asked by MS undercover su=e 
History
What did the portion of Germany that was united to resist Soviet agrwsssiom become known as?
asked by Anonymous 
Social studies
Drag and drop the words to complete the sentences. Both the Roman Catholic Church and the Eastern Orthodox Church permit the use of ____. However, the Roman Catholic Church uses _____ for worship services while the Eastern Orthodox Church uses _____. For 1
asked by Could I please get these corrected? 
History
Which BEST describes how the bubonic plague affected the feudal system in medieval Europe? A) The plague caused most of the artisans to leave Europe, so the peasants did not have the proper tools for farming. B) The plague shut down all trade routes
asked by >>>Wolfie<<< 
Kansas history
The Progressive Movement in Kansas 1. Which of the following was a goal of politicians during the Progressive Era? A. Allow indirect election of senators. B. Ensure safe working conditions. C. Provide more common drinking cups. 2. During the Progressive
asked by Sky, The Coder 
Social Studies
Characteristics of Julius Caesar's Rule. (Select all that apply) A. Gave women the right to vote B. Made himself dictator for life C. Helped the poor D. Gave members of the senate more power
asked by Something something 
Math
Enter the value for x that makes the given equation true. 2(–2x – 4) + 6 = 5 – 3(x + 1)
asked by Jesus 
Chemistry
Aluminum chloride as acid
asked by Anonymous 
math
In a soccer league, the ratio of boys to girls is 4 to 6. There are a total of 50 players in the soccer league. Determine how many girls play in the soccer league
asked by zoey 
math
Write an expression to describe a rule for the sequence. Then find the 100th term in the sequence : 5,13,21,29,37,45,... A) 8n;800 B) 8n3;797 C) 3n8;292 D) 5+8n;805*** please correct me and thanks
asked by :) 
science
If 1 kilogram of glass at 30℃ losses 800 joules, what is the new temperature?
asked by melon 
Social Studies
Select all that apply. geographical features that helped Rome flourish A. mountains B. plateaus C. plains D. rivers E.desert
asked by BeAnS 
geometry
Write a list of steps that are needed to find the measure of angle B. A measures 72 degrees and C measures 113. My answer: A + B + C = 180. 72 + B + (180113) = 180, 72 + B + 67 = 180, B = 180  72  67 = 41 degrees Am I right? TYSM
asked by help 
biology
22. Discuss how farmers (or dog breeders) use artificial selection to take advantage of natural variation to "improve" a species of organism over time. (3 points) 23. As you can see, these tortoises have different shaped shells and necks. Make a hypothesis
asked by Mgk_best_music 
Algebra
The backtoback stemandleaf plot below shows the ages of patients seen by two doctors in a family clinic in one day. Compare the ages of the patients of doctor 1 and doctor 2 using the mean and the median of each data set. Doctor 1 Doctor 2  3  5 9 2
asked by E 
English
When the car suddenly swerved to avoid hitting the motorcyclist,it.....out of control and overturned
asked by Mwanje 
Science
If the relative atomic mass of CH2O is calculated it's empirical formula (C=12,H=1,O=16)
asked by Daniels venelope 
Language Arts
1. Which group of words is a phrase? A. you will nail the test B. in the rain C. the time was up D. she is busy E. the statue Answer: B 2. Which phrase begins with a preposition? A. could not run B. for her sake C. signs on the wall D. sailing in the sea
asked by Anonymous 
SS
Which has contributed to a reduction of income inequality in Argentina, Bolivia, and Peru? A. a decrease in trade with other countries B. move from dictatorship to presidential republics****** C. switch from command economies to mixed economies D. an
asked by Party girl 
chemistry
Calculate the standard entropy change for the following reaction. 2 Al(s) + Fe2O3(s) → 2 Fe(s) + Al2O3(s)
asked by Kymora 
Geometry
List the sides of triangle ΔMNP in ascending order (shortest to longest) if: m∠M = 37°, m∠P = 104°
asked by Vernice 
Math
Driving at a constant speed, you drove 14 miles in 20 minutes. On the “double number line”, show different distances and times that would give you the same speed. Use simple, logical reasoning to determine these equivalent rates.
asked by Ginny 
English Essay
Please, help me edit this. The imperfections of the characters in Chloe “All of us are imperfect human beings living in an imperfect world.” This quote by Haruki Murakami speaks of how there is no such thing as perfection. In Chloe by Kateri
asked by Sarah 
History
Okay so I was just wondering if you could check my answers.  In the text, you read this about the health issue during Bill Clinton's presidency: In 1994, some 37 million
asked by T.Kimbrough 
math
Does 1/x^2 the same as √ (x)?
asked by Anonymous 
math
How does 1/√x^3 =√x?
asked by Anonymous 
Math
Solve the equation x^2  2x  6 = 4 algebraiclly, using the quadratic formula
asked by Anonymous