Posted 3 days ago by Eyuan in Biology 30 | 0 answers
1. For test tubes 1-5, list the entities initially present. Also, identify the SOA and SRA and predict the spontaneity of the reaction.
test tube 1: Iron placed in distilled water
Test tube 2: Iron is placed in hydrochloric acid
Test tube 3: Iron is placed in magnesium
Test tube 4: Iron is placed in saltwater
Test tube 5: Iron is placed in de-aerated water
Test tube 6: Iron alone (controlled)
2. Using the SOA and SRA identified in Question 17, write the oxidation and reduction half-reactions and the net reaction for systems 2 and 4.
3. Explain why there was accelarated corrosion in test tube 3
4. Explain why the nails did not corrode in test tubes 4 and 5.
Posted 5 days ago by needhelpppp in Chemistry 30 | 0 answers
#chemistry 30 #electrochemistry #half reactions #cell notation #net ionic equations
Posted 1 week ago by madmax in Biology 20 | 2 answers
#ecocsystems and population change
Do the four chromatids on a tetrad in meiosis 1 have different alleles?
Posted 1 week ago by needhelp1234 in Biology 30 | 0 answers
#meiosis #bio 30 cell division
if you were to jumo on a bathroom scale, explain how the scale reading would change before it settles to read your actual weight. Use newtons second law to justify what happens.
Posted 1 week ago by mk1243 in Physics 20 | 0 answers
#newtons 2nd law foe a singlw pulley system #math review #net force
i need help with this question please I'm really confused i need it by tomorrow. I'm desperate.
what is the radius of the earth orbit around the sun if it takes 365.25 days to complete one full orbit?(mass or sun 1.99x10^30 and ,mass of earth 5.97 x 10^24kg.
what is FC equal to?
replace FC with a formula and replace fg with newtons equation for gravity ?
solve for r
can you please show me the procedure so i can do it on my own thank you
Posted 1 week ago by minilol in Physics 20 | 3 answers
#simple harmonic motion
how to write a position paper
Posted 1 week ago by jwho10 in Social Studies 30-1 | 2 answers
I need help with this question please I don't understand, I need it by tomorrow please I'm desperate.
find the these
..... how do I find the net force with on the 1000kg satellite, if the distance from the center earth to the moon is 384 00km, and the mass of the moon is 7.36 × 10^22 kg when the satellite is halfway between them
... how do i find the acceleration of gravity (grevitational field strength) happening on a Russian Space Monkey orbiting the Earth 250km above the surface of the Earth.
also, can someone tell me how to find the tension? ex.having 10 mass (uk=0.55) and 3.5m/s^2
please show the procedure so I can do it on my own once again. thanks a lot
Posted 2 weeks ago by minilol in Physics 20 | 0 answers
While travelling at a constant speed in an airplane, a passengers weight is 750 N, when the airplane accelerates down, his apparent weight is 672 N. What is the acceleration???
Posted 2 weeks ago by mk1243 in Physics 20 | 2 answers
#acceleration #net force #math review
Hydrazine, N2H4(aq), is used in the preparation of polymers, pharmaceuticals and rocket fuel. Hydrazine has alkaline properties similar to ammonia and will act as a weak base. Given that a 100 mL sample of 0.10 mol/L hydrazine solution has a pH of 10.55 at 25.0 oC, write the formula for the conjugate acid and calculate the Ka of the conjugate acid.
Posted 2 weeks ago by zamanmina in Chemistry 30 | 0 answers