noel

ok, so i don't understand this question. : which postulate justifies the following statement? "exactly one plane contains <(angle)ABC"??? i don't get what i'm supposed to answer and i don't even understand what it's trying to say. and i've got one aother...

17 years ago

how do i identify the slope snd y-intercept of the graph of each equation. Then graph the equation? plz help asap!

16 years ago

hey coould anyone tell me is the title lord in the 1700's england was compatible with involvement in the royal navy?

16 years ago

If 0.10 M potassium chromate is slowly added to a solution containing 0.50 M AgNO3 and 0.50 M Ba(NO3)2. What is the Ag+ concentration when BaCrO4 just starts to precipitate? The Ksp for Ag2CrO4 and BaCrO4 are 1.1 x 10-12 and respectively.

14 years ago

Calculate the pH of a 0.800 M NaCH3CO2 solution. Ka for acetic acid, CH3CO2H, is

14 years ago

calculate the pressure in Pa and bar of 10^23 gas particles each with a mass of 10^-25 kg, in a 1 liter container if the rms speed is 100m/s

14 years ago

calculate the pressure (in Pascals and bar) of 10^23 gas particles each with a mass of 10^-25 kg, in a 1 L container if the rms speed is 100m/s? What is the total kinetic energy of these particles? What is the temperature inside the container

14 years ago

calculate the rms speeds of He at 10, 100, and 1000 K in meters per second and in miles per hour. What values would be otained if the pressure was 10^-10 bar

14 years ago

what is the 4σ rule of thumb in statistics

14 years ago

how would the graph of Pressure vs Volume look for a sample of an ideal gas that has a volume of 1 L at 0 degrees Celsius and 1 bar. How would the graph of Pressure versus volume look for sample of gas at the same conditions but at 100 degrees Celsius?

14 years ago

what would be the effect on a chromatographic peak of introducing the sample at too slow a rate

14 years ago

if PV=RT + ἁP where ἁ is a constant Calculate the work if the gas is heated at constant pressure from T1 to T2 Calculate the work if the gas is expanded isothermally and reversibly

14 years ago

the work done by the system during a certain adiabatic process is 200J. What is the change in U of the system

14 years ago

Calculate the frequency in hertz, wavelength in nm, and the velocity in m/s of light inside a material with a refractive index of 1.39. In vacuum, the light has a wavelength of 514.5nm

14 years ago

Quartz has a refractive index of 1.54. If light from a HeNe laser impinges on an air/quartz interface at an angle of 22.5 degrees, what is the angle of refraction?

14 years ago

find the ph of the solution that results from the addition of 25ml of 0.1mol/l NaOH solution to 50ml of 0.1mol/l HCL solution?

14 years ago

How do deforestation and urban sprawl affect the greater food web?

13 years ago

7. Determine the inverse of each relation given. a. f(x) = 1/x-2 + 3 b. f(x) = 2(x – 4)^2 + 5

13 years ago

5. Find the slope of the secant to the curve f(x) = 0.25(4)^x - 2 between: i) x = 0 and x = 1 ii) x = 0 and x = 0.5 iii) x = 0 and x = 0.1 iv) x = 0 and x = 0.01

13 years ago

Simplify the following using the laws of exponents: Need help with these: a) (9)^1/2 x 4^2/24 b) 16 x 2^x+2 Simplify each of the following: b) b) 3 sqrt x^1/4 sqrt x/ 5 sqrt x^2 c) (ab)^2x+y /a^x b^y Need these answers double checked: c) 3^-8/3^-6 x 3^-5...

13 years ago

Simplify each of the following: 1. 16*(2^x)+2 2. 3[sqrt(x^1/4)*sqrt(x)/5*sqrt(x^2)] 3. ab^(2x+y)/a^x b^x

13 years ago

1. θ is a first quadrant angle in standard position and cos 1/(sqrt10)= . Find the exact value of sin . 2. feta is a second quadrant angle in standard position and tan(feta) -((sqrt5)/2) = . Find the exact value of cos(feta) . 3. θ is an angle in standard...

13 years ago

Prove the following trigonometric identities 1. tanx = sinx + sin^2x/cosx(1+sinx) 2. cos^3+(cosx)(sin^2x) = 1/secx

13 years ago

ways non-Muslims were treated in the Islamic world?

11 years ago

A buffer with a pH of 4.30 contains 0.25 M of sodium benzoate and 0.20 M of benzoic acid. What is the concentration of [H ] in the solution after the addition of 0.052 mol of HCl to a final volume of 1.5 L? I know that Ka = 6.3x10-5 do I need to use an ic...

10 years ago

If 0.055 kg of ice at 0 ∘C is added to 0.330 kg of water at 32 ∘C in a 0.100-kg aluminum calorimeter cup, what is the final temperature of the water?

9 years ago

A distribution of test scores of 600 examinees follows a normal distriburion with an everage of 80 having a standard deviation 12, how many examinees would you expect to find above a score of 100?

9 years ago

What were some common ideas shared by the first colonists in each of the New England, Middle, and Southern Colonies?

7 years ago

Choose the correct use of apostrophes in the next sentence. Marcs ambition is to buy his uncles 1947 Dodge and restore it to its original condition. Question 13 options: a) no apostrophes needed b) apostrophes in "Marcs" and "uncles" c) apostrophes in "Ma...

5 years ago

Before leaving for the day, this work should be completed Question 6 options: a) properly constructed sentence b) dangler c) misplaced part d) comma splice

5 years ago

a thin sheet of metal 1.2ft^2 has a weight of 10.1 lb. if 1.1 lb.,2.1 lb.,4.1 lb and 3.1 lb. weight are hund on the different corner, where would a fulcrum have to be place to balance the sheet and the weight

3 years ago

4 more than the difference of 12 and a number j

3 years ago

Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction. N2(g)+ O2(g)=2NO(g)

16 years ago

he wasn't fully human- he was human and fully God. he came as a human to absorb the wrath God had to use to punish sin. Jesus did that for all who trust in him and his grace. otherwise...

16 years ago

his death itself wasn't the point. It was his ressurection. God poured the wrath meant for sinners on the only substitute possible, his son. he died, and payed the price on the cross as he died. but he was ressurectred after 3 days, so anyone who trusts i...

16 years ago

to answer this question you need to know the formula for the circumference of a circle is: circumference = pi * 2r and a circle is 360 degrees. so the length of the arc is what fraction of the whole circle? and that fraction times the above circumference...

15 years ago

base figures you need to know 5280 feet in a mile 12 inches in a foot 60 minutes in an hour The circumference of a circle formula is circumference = pi * radius * 2 the trick of this problem is you have feet in the mile but inches in the tire & hours in t...

15 years ago

It's f(x) = .25(4^x) - 2 Thank you!

13 years ago

feta = β

13 years ago

middle east, late 1300's-1700's

11 years ago

i think its C

5 years ago

thanks

4 years ago