# kb

Popular questions and responses by kb
1. ## English

Identify the correct sentence. A. In my top drawer is a birthday card from my grandmother and a gold watch from my mother. B. In my top drawer are a birthday card from my grandmother and gold watch from my mother. C. In my top drawer are a birthday card

2. ## English

__________ Destiny or Caroline sent an RSVP to the invitation? We __________ everyone __________ it to Jake's party. A. Has; hope; make B. Have; hopes; make C. Have; hope; makes D. Has; hope; makes I say C

3. ## Math

If John wants to retire with \$10,000 per month, how much principal is necessary to generate this amount of monthly income if the interest rate is 15%?

4. ## chemistry

A mixture of carbon and sulphur has a mass of 9.0 g. Complete combustion with excess oxygen gives 22.6 g of a mixture of carbon dioxide and sulphur dioxide. Find the mass of sulphur in the original mixture

5. ## chemistry

what is the angular momentum quantum number for the orbital from which an Mg atom loses two electrons to form Mg2+ ion.

6. ## physics

When a water gun is ﬁred while being held horizontally at a height of 1.14 m above ground level, the water travels a horizontal distance of 4.50 m. A child, holding the same gun in a horizontal position, slides down a 34.0◦ incline at a con- stant

7. ## physics

When you take a bath, how many kilograms of hot water (48°C) must you mix with cold water (13°C) so that the temperature of the bath is 36°C? The total mass of water (hot plus cold) is 185 kg. Ignore any heat flow between the water and its external

8. ## Math

Find the cost of the monthly rent for a two-bedroom apartment in 30 years, assuming an inflation rate of 5% (compounded continuously), if the current rent is \$610. (Round your answer to the nearest cent.)

9. ## IT

You have been tasked with the project of organizing a company offsite 2-day training session in which people are brought in from different parts of the country. This entails everything from preparation, accommodations, and facilities. • There is APA

10. ## Chemistry

Calculate the pH for each of the following points in the titration of 50.0 mL of a 2.7 M H3PO3(aq) with 2.7 M KOH(aq). pKa1 = 1.3 and pKa2 = 6.7 a) before addition of any KOH b) after addition of 25.0 mL of KOH c) after addition of 50.0 mL of KOH d) after

11. ## physics

An airplane is flying horizontally with a constant velocity of 160 m/s at an altitude of 5400 m when it drops a package. How far ahead of the target along the x direction should the plane be when it releases the package?

12. ## physics

A 45 kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.0 m/s. Her hands are in contact with the wall for 0.80 s. Ignore friction and wind resistance. Find the magnitude and

13. ## Math

Find the future value, using the future value formula and a calculator. (Round your answer to the nearest cent.) \$864 at 5.5% compounded quarterly for 5 years

14. ## Chem

What is the longest wavelength of electromagnetic radiation capable of ionizing this hydrogen atom in an excited state? Report your answer in nanometers. Δ𝐸=−2.178×10−18 J(1𝑛2final−1𝑛2initial)

15. ## math

a recipe calls for 2 1/2 quarts of fish stock and 1 1/2 pounds of shrimp. what is the unit rate of fish stock to shrimp in the gumbo

16. ## chemistry

How many joules of energy would be liberated by condensing 49.6 mol of steam at 100.0 °C and allowing the liquid to cool to 30.0 °C?

17. ## physics

the mass of the water is 131 kg and its initial temperature is 24.2°C, how much energy must the water transfer to its surroundings in order to freeze completely? The specific heat of water is 4186 J/kg·K, and the latent heat of fusion is 333 kJ/kg

18. ## Chemistry

Calculate the pH at the equivalence point for the titration of 0.200 M methylamine (CH3NH2) with 0.200 M HCl. The Kb of methylamine is 5.0× 10–4.

19. ## government

. The source of the Supreme Court’s authority is (Points : 1) moral suasion. judicial activism. concurring opinion. dissent.

20. ## calculus

suppose the set of points have the following coordinates:(-2,3),(4,-4),(2,-3). please calculate the moment of this set of points about the x-axis and also about the center.

21. ## math

need help with "you have \$15 in your bank account. you spend \$11 on a hat. then you mow 3 lawns for \$20 each and deposit the money into your bank account, write and solve an expression (using order of operations) to determine how much money is in your

22. ## biology

(Which of the following would least likely induce thirst) a)Dry pharynx b)Decrease blood volume c)decrease blood pressure d)decreased blood osmolarity

23. ## biology

lipid soluble must be oxidized before they are excreted from.otherwise the toxins would not be able to pass through the a)bowman capsule b)red blood cells c)cell membranes d)cytoskeleton

24. ## chemistry

find the maximum value of h2(g)in grams that would be expected to form by reacting 6.54g of zinc with 50ml of 0.1M of HCl.

25. ## physics II

the lens to retina distance in the human eye averages 2.0cm what is the power of the lens of the human eye

26. ## physics

alpha particles are accelerated through a potential of 1000volts and then enter a magnetic field 0.2T perpendicular to the their direction of motion.Calculate the radius of the circular path that they traverse.An alpha particle has a mass 6.68x 10^-27kg

27. ## physics

11. The charged plates of a parallel plate capacitor each have a charge density of 3 x 10-3 C/m2. What is the electric field E between the plates?

28. ## Physics

The space between two points

29. ## physics

a supertanker with a mass of 5.0 x 10 to the 8th power kg accelerates from rest to a speed of 10 m/s in a time of 1000s. what is its average acceleration? how much force is required to accelerate the supertanker?

30. ## math

i have a math question and i know that there is a simple solution that i am missing. We are going to be given a 100 foot piece of rope and we have to make a baseball diamond where the bases are 60feet apart. Help

31. ## Algebra

The first three equations I have solved, I would just appreciate someone checking them over to make sure I'm doing them right. Find the GCF: 16x^2z ,40xz^2 , 72z^3 = 3^3z Factor our GCF: a(a+1) - 3(a+1) = a+1 Factor Polynomial: 9a^2 - 64b^2 =

32. ## physics

A primitive diving bell consists of a cylindrical tank with one end open and one end closed. The tank is lowered into a freshwater lake, open end downward. Water rises into the tank, compressing the trapped air, whose temperature remains constant during

33. ## PHYSICS

A molecule consists of two atoms. The atoms have masses of 17 u and 14 u and are 1.78e-10 m apart. How far from the first atom is the center of mass of the molecule?

34. ## physics

A mine car, whose mass is 590 kg, rolls at a speed of 0.5 m/s on a horizontal track, as the drawing shows. A 150 kg chunk of coal has a speed of 0.95 m/s when it leaves the chute. Determine the velocity of the car/coal system after the coal has come to

35. ## geometry

A rope is connected to a boat and to the boat's anchor that is resting on the ocean floor at a position not directly under the boat. The rope is 105 feet long and the water is 55 feet deep. To the nearest tenth of a foot, how far is the anchor from a point

36. ## geometry

A rope is connected to a boat and to the boat's anchor that is resting on the ocean floor at a position not directly under the boat. The rope is 105 feet long and the water is 55 feet deep. To the nearest tenth of a foot, how far is the anchor from a point

37. ## algebra

solve for x: 2(x-3) - 3(x+5) = 3 (x-2) - 7 Perform the indicated multiplications; add up the constants and the terms that involve x; then get all terms that involve x on one side of the equation. 2x -6 -3x -15 = 3x -6 -7 -x -21 = 3x -13 -8 = 4x x = ? -2

38. ## algebra

A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafters in the attic. If the roof is 6 m from peak to eave and the attic space is 2 m high at

1. ## Math

When your age is 18 years old that time your sister's age is half of your age that means 18/2 = 9 years So difference between you and your sister's age is 18-9 = 9 years so your sister is 9 year younger than you. So when your age will become 82 years that

posted on March 19, 2020
2. ## Math

I got confused for a second. You are a life saver! 2733.83

posted on September 11, 2019
3. ## Math

What do you mean by e

posted on September 11, 2019
4. ## Math

This is the only information given 😬

posted on September 11, 2019
5. ## Math

Great that's exactly what I got 1135.35

posted on September 11, 2019
6. ## Mat104

Where did you get the 1.018333?

posted on September 11, 2019
7. ## chemistry

jhf

posted on July 11, 2019
8. ## SCIENCE NOW

I have the same question but I'm not sure if we have the same answer choices... A. used to compare to cultures C and D B. used to compare to cultures A and B C. used as a control D. all of the above E. none of the above correct= D

posted on April 23, 2017
9. ## Math- Linear Equations

suppose a new watersports company aqua sports is open for business they are running a grand opening sale their rental cost can be modeled by linear equation we are told that for 30 minutes of use their rental cost will \$50 for 60 minutes of use their

posted on December 15, 2014
10. ## PHYSICS

bob is correct, except that you have to subtract the Force*sin(31). It's a poorly worded problem, to say the least.

posted on April 2, 2013
11. ## Chemistry

Oh... I see where I went wrong. thanks!

posted on March 11, 2013
12. ## Chemistry

Ok, that's what I did before. so 2E-11 = x^2/(0.1-x) so x^2 = 2E-12 - 2E-11x But what I don't understand then is how do we solve for x? I used the quadratic equation but when I plugged in those values it gives me 0. So where am I going wrong?

posted on March 11, 2013
13. ## Chemistry

Thanks!

posted on March 11, 2013
14. ## Chemistry

I'm really confused. I've never done a problem like this before. Could you plug in the values for me? It just doesn't make any sense and my teacher won't explain it to me when I ask about it.

posted on March 11, 2013
15. ## Chemistry

But what's Kw? and the value for NH3? Is that just x? So should it be Kw/5.0x10-4 =(x)(x)/(0.1-x)

posted on March 11, 2013
16. ## Chemistry

I'm not sure how to set up the equations using the volumes, and I'm not even sure what givens I'm supposed to use.

posted on March 11, 2013
17. ## chemistry

If you heated a hydrate too quickly and some of it splattered out of the beaker how would it affect the calclated percent by mass of water and the molecular formula

posted on May 11, 2010
18. ## Physics

Chris Cheggies

posted on January 10, 2010
19. ## physics

PV=nRT ideal gas law is the only thing i got n R T will stay constant i believe so that leaves me with PV so PV of initial vs. PV of final... maybe

posted on November 19, 2008
20. ## physics

just guessing but normal atmospheric pressure

posted on November 19, 2008
21. ## Math

1.367

posted on October 14, 2008
22. ## physics

thank you

posted on October 14, 2008
23. ## algebra 1

it equals a negative number

posted on October 2, 2008