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Brittany

Questions and answers by Brittany, page 3

Questions (497)

I need help i have to have a literary term for ch. 1,2,3,5,12,13,14,16,and 26 im having trouble figuring out how to do that so
1. 7 answers
2. 835 views
Does 2Na 2H2O 2NaOH H2 shows that the total mass during a chemical reaction stays the same?
1. 2 answers
2. 608 views
I need help making a concept map. I have to put the following words into one and i don't know where to start.Gene DNA Chromosome
1. 1 answer
2. 484 views
The airplane can take off when its airspeed (speed of the air flowing over the wing) is equal to 65 knots. What is the length of
1. 5 answers
2. 521 views
At the instant a traffic light turns green, a car starts moving with a constant acceleration a of 4.00 m/s2. At the same instant
1. 4 answers
2. 1,625 views
The single cable supporting an unoccupied elevator breaks when the elevator is at rest at the top of a 155 m high building. With
1. 7 answers
2. 504 views
Calculate the weight percent of water in NiSO4 6H2O, how to calculate it?
1. 1 answer
2. 478 views
Calculate the weight percent of water in NiSO4 6H2O, how to calculate it?
1. 2 answers
2. 461 views
Calculate the weight percent of water in NiSO4 6H2O, how to calculate it?
1. 4 answers
2. 1,345 views
How much heat energy in KJ is evolved by a reaction in a calorimeter in which the temperature of the calorimeter and water
1. 4 answers
2. 741 views
The specific heat capacity of Lead is 0.127J/degrees C*g. What is the molar heat capacity of Lead? What is the heat capacity of
1. 4 answers
2. 1,049 views
If you have Hydrochloric acid, how many grams of aluminum must you use to produce 57.0 L of hydrogen at STP?2Al(s)+6HCl(aq) -->
1. 5 answers
2. 568 views
A 2.4375 g sample containing a mixture of KClO3 and NaCl is heated and under goes a mass loss of 0.6191 g. What is the percent
1. 1 answer
2. 521 views
a 2.4375 g sample containing a mixture of KClO3 + NaCl is heated and undergoes a mass loss of 0.6191g. What percent of KClO3 is
1. 1 answer
2. 436 views
a 2.4375 g sample containing a mixture of KClO3 + NaCl is heated and undergoes a mass loss of 0.6191g. What percent of KClO3 is
1. 1 answer
2. 471 views
a 2.4375 g sample containing a mixture of KClO3 + NaCl is heated and undergoes a mass loss of 0.6191g. What percent of KClO3 is
1. 1 answer
2. 391 views
a 2.4375 g sample containing a mixture of KClO3 + NaCl is heated and undergoes a mass loss of 0.6191g. What percent of KClO3 is
1. 1 answer
2. 407 views
Why did the Supreme Court rule that segregation was constitutional?
1. 4 answers
2. 413 views
The front 1.20 m of a 1550 kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision.(a) If a car
1. 4 answers
2. 7,175 views
The four quantum numbers for the last electron placed in the orbitals of a certain element are: n=3 l=2 m of l=0 and m of
1. 4 answers
2. 1,409 views
The four quantum numbers for the last electron placed in the orbitals of a certain element are: n=3 l=2 m of l=0 and m of
1. 3 answers
2. 838 views
If a student starts with 615g of Co(NO3)2 and obtains a 57.3% yield of CoS, what mass of CoS is isolated?Co(NO3)2 + K2S ---> CoS
1. 1 answer
2. 395 views
If a student starts with 615g of Co(NO3)2 and obtains a 57.3% yield of CoS, what mass of CoS is isolated?Co(NO3)2 + K2S ---> CoS
1. 1 answer
2. 342 views
A ball of mass 0.640 kg moving east (+x direction) with a speed of 3.00 m/s collides head-on with a 0.740 kg ball at rest. If
1. 4 answers
2. 1,331 views
The half-life of radioactive strontium-90 is approximately 31 years. In 1960, radioactive strontium-90 was released into the
1. 1 answer
2. 1,155 views
In the year 2005, a picture supposedly painted by a famous artist some time after 1815 but before 1865 contains 96.5 percent of
1. 4 answers
2. 2,188 views
On the graph of f(x)=6sin(8πx), points P and Q are at consecutive lowest and highest points with P occuring before Q. Find the
1. 4 answers
2. 4,604 views
What is the value of x?A isosceles triangle: bottom - x+3 one side - 2x+5 other side - 3x+2
1. 2 answers
2. 485 views
According to Car and Driver, an Alfa Romeo going 70 mph requires 177 feet to stop. Assuming that the stopping distance is
1. 4 answers
2. 1,942 views
Consider the function f(x) = 5x^3 +5x^2 + 7, and let c be a number in the interval [0.1] . For what values of k is there a c in
1. 1 answer
2. 335 views
A 0.3 ml dose of a drug is injected into a patient steadily for 0.35 seconds. At the end of this time, the quantity, Q, of the
1. 3 answers
2. 2,940 views
Use a graph to estimate the limit:lim θ->0 (sin(5θ)/θ) Note: θ is measured in radians. All angles will be in radians in this
1. 2 answers
2. 549 views
A person is standing at the edge of the water and looking out at the ocean (see the drawing). The height of the person’s eyes
1. 3 answers
2. 1,481 views
Can you help me with this one also? I know how to do it with 3 vectors but I can't seem to draw it with 4 vectors. The
1. 4 answers
2. 1,152 views
lim as x --> infinity of (x^2-16)/(x-4) is 8By graphing, find an interval for near zero such that the difference between your
1. 4 answers
2. 568 views
What would be the resulting molarity of a solution made by dissolving 21.9 grams of KCl in enough water to make an
1. 3 answers
2. 688 views
A particle moves at varying velocity along a line and s=f(t) represents the particle's distance from a point as a function of
1. 2 answers
2. 937 views
A 0.100 mol sample of H2S is placed in a 10.0 L reaction vessel and heated to 1132°C. At equilibrium, 0.0285 mol H2 is present.
1. 1 answer
2. 792 views
How many grams of a stock solution that is 92.5 percent H2SO4 by mass would be needed to make 250 grams of a 35.0 percent by
1. 2 answers
2. 1,273 views
The third and seventh terms of an arithmetic sequence are 10 and 20.1) What is the value of the 1st term? 2) What is the value
1. 3 answers
2. 645 views
In a gift wrapping department, a customer can choose from x different papers, y different ribbons, and z different greeting
1. 4 answers
2. 498 views
How many moles of nitric acid will be produced when 0.35 moles of water reacts?
1. 2 answers
2. 836 views
How many moles of dinitrogen pentoxide are needed to produce 1.25 moles of nitric acid?
1. 1 answer
2. 442 views
How do I find the molarity of Fe(SCN)2+?I know the molarity of SCN=0.1 and the molarity of Fe is 0.0001. The volume of SCN is 5
1. 4 answers
2. 1,798 views
What is the pH of a solution prepared by dissolving 7.5g HCl in water to make 375mL of solution?
1. 1 answer
2. 484 views
"Use difference quotients with delta(x)=0.1 and delta(y)=0.1 to estimate fx(1,3) and fy(1,3) where f(x,y)=e^(-x)sin(y)."I don't
1. 2 answers
2. 1,313 views
The question that I'm stuck on is this:"Let f(x,y)= x^(2)*ln(y). Find the average rage of change of f as you go from (3,1) to
1. 1 answer
2. 370 views
The temperature at any point in the plane is given by the function T(x,y)= 100/(x^2+y^2+1). Find the direction at the point
1. 3 answers
2. 808 views
"Let f(x,y)=2(x^2)y-(y^3)+x-4.a) Find the local linearization of f at (3,1) b) Compute the directional derivative of f at (3,1)
1. 1 answer
2. 488 views
A car traveling at 26 m/s undergoes a constant decleration of 12 m/s^2. About how long di=oes it take the car to come to a stop?
1. 2 answers
2. 483 views
Describe how to prepare an aqueous 100 mL stock solution of 2 M sodium chloride solution.
1. 1 answer
2. 448 views
"The production amount, Q, of an item manufactured by a company is modeled by the CobbDouglas functionQ =
1. 1 answer
2. 491 views
Find the measurement of angle X given that tan X=0.5736 . Round to the nearest degree.
1. 4 answers
2. 1,215 views
finding the hypotenuse for triangles with only one measure of 7.8 m and two angles with degrees of 90 and 40. The picture is a
1. 2 answers
2. 602 views
Very Important I can get someone to check these for me... I have to get an A, and I was wondering if someone could double check
1. 2 answers
2. 715 views
I have 14 questions and I was wondering if someone could check my answers. This is a do or die situation. If I don't get an A, I
1. 5 answers
2. 3,170 views
Simplify 4q^2-5q-1+8q^2+8q-9A. -4q^2+3q+8 B. 12q^2+3q-10 C. -12q^2-13q-10 D. -4q^2-13q+8 I'm pretty sure its B. 12q^2+3q-10 Add
1. 4 answers
2. 569 views
I asked this earlier, but I didn't get an answer. I'm glad though, because I found a couple of typos. I can get someone to check
1. 3 answers
2. 718 views
Suppose f(x,y) = A - (x^2 + Bx + y^2 +Cy). What values of A, B, and C give f(x,y) a local maximum value of 15 at the point
1. 1 answer
2. 352 views
Five balls are selected at random without replacement from an urn containing three white balls and five blue balls. Find the
1. 1 answer
2. 781 views
A 10.0 ml sample of vinegar which is an aqueous solution of acetic acid, requires 16.5ml of a 0.500M NaOH solution to reach the
1. 2 answers
2. 1,183 views
In the 1950's, how did some corperations expand to protect themselves against the dangers of economic downturns?
1. 1 answer
2. 308 views
Identify two causes of urbanization (growth in city life) and explain how each changed the geography of the United States.
1. 1 answer
2. 397 views
Affordable housing and improved transportation allowed people to begin to move away from central cities to the suburbsThink:
1. 2 answers
2. 621 views
Suppose you want to test the claim that mu is not equal to 3.5. Given a sample size of n = 31 and a level of significance of
1. 2 answers
2. 863 views
Luis is 10 years older than his brother. Next year, he will be three times as old as his brother. If the brother's age is
1. 3 answers
2. 617 views
Complete.g to the 2nd power - 8g+16=(g - 4)(g....4)
1. 1 answer
2. 320 views
complete.6t to the 2nd power - 23t + 20=(3t - 4)(2t - .....)
1. 2 answers
2. 1,032 views
A 3 kg toy car with a speed of 10 m/s collides head-on with a 2 kg car traveling in the opposite direction with a speed of 3
1. 3 answers
2. 1,414 views
Consider the function f(x)=sqrt(2–5x^2), –5≤x≤1. The absolute minimum value is ____ and this occurs at x equals ______?F
1. 4 answers
2. 621 views
Find slope of f(x)=x^3–2x^2+2x+2 on the interval (–3–1).
1. 1 answer
2. 365 views
If X=5 units, x=11 units, h=10 units, what is the area of trapezoid shown above
1. 1 answer
2. 353 views
An alpha particle,4He2+ , has a mass of 4.00151 .Find the value of its charge to mass ratio in C/kg. How do I solve this?
1. 4 answers
2. 3,209 views
Boron has only two naturally occurring isotopes. The mass of boron-10 is 10.01294 amu and the mass of boron-11 is 11.00931 amu.U
1. 3 answers
2. 3,782 views
the cube of what number is 2197?
1. 1 answer
2. 299 views
how did rivres in southwest asia enrich the soil
1. 4 answers
2. 880 views
For the following acid-base reaction, calculate the mass (in grams) of each acid necessary to completely react with and
1. 2 answers
2. 751 views
A runner wants to run 11.6 km. She knows that her running pace is 8.1 miles per hour. How many minutes must she run?
1. 4 answers
2. 4,373 views
Find the volume of 0.110 M hydrochloric acid necessary to react completely with 1.54 Al(OH)3.Please explain how to do this.
1. 3 answers
2. 527 views
Find the volume of 0.110 M hydrochloric acid necessary to react completely with 1.54 Al(OH)3.Please explain how to do this.
1. 2 answers
2. 607 views
Find the volume of 0.110 M hydrochloric acid necessary to react completely with 1.54 Al(OH)3.Please explain how to do this.
1. 4 answers
2. 612 views
I need help with one T or false guestion. I don't know if this is true or falseAs a christian, persian king khosrow I forbade
1. 1 answer
2. 405 views
How do you find a shaded area of a rectangle of 24 ft and 40 ft and 100 ft
1. 1 answer
2. 452 views
If the sum of the lenghts of two sides of a triangle is 15, what is the largest possible integral value for the third side?
1. 3 answers
2. 377 views
A hockey player shoots a puck, exerting a constant force of 30.0 N on the hockey puck for 0.16 seconds. What is the magnitude of
1. 3 answers
2. 1,154 views
1. Establish the identity:sin(theta+3pi/2)=-cos(theta) 2. Find the exact value of 2(theta) if sin(theta)=5/13 3. Show that:
1. 1 answer
2. 1,157 views
A study shows that 10% of americans are left-handed.Find the probability that at most one student is left handed in a class of
1. 2 answers
2. 870 views
the diver acheives a horizontal velocity of 3.75 m/s from a diving platform located 6.0 m above the water. How far from the edge
1. 4 answers
2. 1,963 views
Find the horizontal range of a baseball that leaves the bat at an angle of 63 degrees, with the horizontal with an initial
1. 5 answers
2. 2,026 views
what does SS stand for in Shurley Method?
1. 2 answers
2. 723 views
How do I find the relative maximum and minimum and the zeros of f(x)=-x^3+16x^2-76x+96??
1. 3 answers
2. 1,002 views
Sweden is reported to have among the highest percentage of citizens aged 80 years and over, at approximately 5.5 % (i.e. 5.5 %
1. 2 answers
2. 633 views
At a local ice cream shop, you can choose from a collection of 18 different toppings. If you want to choose at least one
1. 1 answer
2. 439 views
A turntable of radius 2m rotates freely about a fixed vertical axis. A child 19 kg is standing on the turntable right at the
1. 6 answers
2. 1,157 views
A solid disk with a mass of 100kg and a radius of 0.2m, turns clockwise through an angular displacement 10 rad when starting
1. 1 answer
2. 458 views
A solid disk with a mass of 100kg and a radius of 0.2m, turns clockwise through an angular displacement 10 rad when starting
1. 2 answers
2. 585 views
A solid disk with a mass ok 100 kg and radius of 0.2m turns clockwise through an angular displacement 10 rad when starting from
1. 1 answer
2. 952 views
A solid disk with a mass ok 100 kg and radius of 0.2m turns clockwise through an angular displacement 10 rad when starting from
1. 1 answer
2. 409 views
Say that you purchase a house for $270,000 by getting a mortgage for $235,000 and paying a $35,000 down payment. If you get a
1. 2 answers
2. 577 views
A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 69.8 kJ of heat. Before the reaction, the volume of
1. 2 answers
2. 619 views

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