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1. ### What are the simplified forms of the following functions using k -maps? Needed the possible answers to verify whether I am doing it right?

...39;CD' + A'B'D + ABD + B' C 'D Now try to follow those steps for the second problem...

1 Answers · Science & Mathematics · 24/03/2021

2. ### this physics question stumped me?

F = k q1 * q2 / r^2; (Coulomb's force. Centripetal force). F = m v^2 / r; (Centripetal force). q1 =+ 2 * 1.6 * 10^-19 C ; The ion has a charge of + 2 because 1 proton of the nucleus is...

2 Answers · Science & Mathematics · 01/04/2021

3. ### chemistry homework help please?

...atm) x (12.0 L) / ((4.00 mol x (0.082057366 L atm/ K mol)) = 204.7 K = - 68.4 ° C 3. P = nRT / V = (3 mol) x (0.082057366 L atm/ K ...

1 Answers · Science & Mathematics · 16/04/2021

4. ### Physics question?

Coulomb: Fe = kQq / d² where k = 1/4πε₀ = 8.99e9 N·m²/C² Newton: Fg...

1 Answers · Science & Mathematics · 23/03/2021

5. ### The decay of Iridium-192 which is a first-order reaction with a half-life of 74 days?

..., where A is the amount of iridium-192. ==== b. Rate constant, k = ln(2)/t½ = ln(2)/(74 days) = 0.009367 day⁻¹ ≈ 0.00937 day⁻¹ ==== c . No. of half-lives = (5 × 365.25 days) / (74 days) = 24...

1 Answers · Science & Mathematics · 24/03/2021

6. ### A sample of gas has an initial pressure of 1.50 atm at a volume of 3.40 L at a temperature of 20.0° C . ?

(3.40 L) / (20.0 + 273.15) K x (20.0 + 10.0 + 273.15) K x (1.50 atm / 2.50 atm) = 2.11 L

4 Answers · Science & Mathematics · 26/03/2021

7. ### How many grams of liquid sodium are needed to absorb 4.80 MJ of energy in the form of heat if the temperature of the sodium is not to inc?

q = mCΔT m = q / ( C x ΔT) m = ( 4.80 * 10 ^6 J ) / ( 30.8 J / mol• K ) x ( 10.0 K )  = 15584.41 mole of Na  = 15584.41 mole *23 g / mol of Na = 3.58 * 10 ^5 g of Na

1 Answers · Science & Mathematics · 02/04/2021

8. ### Physics help please?

...charge of (-18 + 12)x10^-9 C = -6x10^-9 C so each sphere will have -3x10^6 C on it.  Then F' = k *Q^2/x^2 = 9 x 10^-7 N  --> this number is positive...

2 Answers · Science & Mathematics · 26/03/2021

9. ### Two charged particles (q1 = 0.32 mC, q2=-3.1 C ) are 1.2 m apart. What is the instantaneous electrostatic force between them? ?

F = k *q1*q2 / d² where k = 1/4πε₀ = 8.99e9 N·m²/C²

1 Answers · Science & Mathematics · 27/03/2021

10. ### How many grams of liquid sodium r needed to absorb 5.50 MJ of energy in the form of heat if the temperature of the sodium is not to inc?

...use the formula q = mcΔT rearranging it gives, m = q/ c ΔT because we have to find m (mass). m = { 5.50 MJ x ( 10^6 J / 1 MJ ) } / { ( 30.8 J / mol• K ) x ( 10.0 K ) } x (22.99 g Na / 1 mol Na) m = (5500000)/(308...

2 Answers · Science & Mathematics · 22/03/2021

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