# Author: ForNoob Team

• ## What volume (in mL) of 0.0887 M MgF2 solution is needed to make 275.0 mL of 0.0224 M MgF2 solution?

Fornoob Team’s answer This can be solved using the equality: M1 X V1 = M2 X V2 M1 = 0.0887 M V1 = Unknown M2 = 0.0224 M V2 =…

• ## A vacuum-insulated parallel-plate capacitor with plate separation d has capacitance C0.?

A vacuum-insulated parallel-plate capacitor with plate separation d has capacitance C0. What is the capacitance if an insulator with dielectric constant κ and thickness d/2 is slipped between the electrodes?…

• ## enthalpy chem problem?

Now consider the following set of reactions: N2 + 2O2→N2O4 ,ΔH=−8 kJ/mol N2 + O2→2NO ,ΔH=180 kJ/mol What is the enthalpy for the following reaction? overall: N2O4→2NO + O2 Fornoob…

• ## What is the beetle’s actual distance beneath the surface?

A biologist keeps a specimen of his favorite beetle embedded in a cube of polystyrene plastic. The hapless bug appears to be 2.0 cm within the plastic. d_actual = ?…

• ## A table of values for f, g, f ‘, and g’ is given.?

x f(x) g(x) f ‘(x) g'(x) 1 3 2 4 6 2 1 8 5 7 3 7 2 7 9 (a) If h(x) = f(g(x)), find h'(3). (b) If…

• ## What exactly does “making peace with the establishment” mean?

There was a political quiz I recently took at asked a question about “making peace with the establishment.” I have three questions: What do they mean exactly by this’ Why…

• ## What is the width of the central maximum on a screen 2.0 m behind the slit?

A 0.50 mm-wide slit is illuminated by light of wavelength 500 nm. Fornoob Team’s answer The halfwidth is the position of the 1st diffraction minimum, solved as follows: Θ =…

• ## find a unit vector that is orthogonal to both i+j & i+k?

find a unit vector that is orthogonal to both i+j & i+k? I know that the length is sqrt(a^2 + a^2 + a^2) = asqrt(3) but I don’t know how…

• ## When you ride a bicycle, in what direction is the angular velocity of the wheels?

When you ride a bicycle, in what direction is the angular velocity of the wheels? a) to your left b) to your right c) forwards d) backwards i thought it…

• ## Let two objects of equal mass (m) Object 1 has an initial velocity (v) to the right, object 2 is stationary?

1. If the collision is perfectly elastic, what are the final velocities v1 and v2 of objects 1 and 2? 2. Now suppose that the collision is perfectly inelastic. What…