Tasneem

So i been trying to solve this question like for ever! so i hope you guys can help me , here is the question : the volume of a seawater on earth is about 330,000,000 mi3. if seawater is 3.5% sodium chloride by mass and has a density of 1.03g/mL, what is t...

calculate the ph of a solution that results from titrating 0.0500 moles of cyanic acid to the equivalence point with an equal number of moles of OH-, if the final volume of the solution is 150 ml ka= 3.50 * 10^-4

2. At 600 K the decomposition of gas ohase nitroethane (CH3CH2NO2) is first order with a rate constant of 1.9*10^-4 s^-1. CH3CH2NO2 --> C2H4 + HNO2 a) Write out the differential and integrated rate laws for this reaction. b) If a 10.0g sample of nitroetha...

Cyanic Acid is a weak acid HOCN + H2O <--> H3O+ +OCN- ka= 3.5*10^-4 a) if 2.5ml of 0.01 M cyanic acid solution is added to 25.0 ml of a formis acid buffer with ph = 3.70, what is the ratio of [OCN-]/[HOCN] in the resulting solution? b) determine the pH of...

Suppose that a scientist estimates that every square mile of the ocean contains an average of 4.6 × 104 pieces of trash. The area of the Earth’s surface that is covered by oceans is approximately 1.2 × 108 square miles. Using the estimate, how many pieces...

joel is looking at costs for using a gym. he could pay $50 per month for unlimited use or he could pay $12 per month plus $4 per visit. how many visits would he have to make the $50 per month unlimited use option the cheapest one ?

using bacterias or generally just living organisms in manufactured things such as drugs, recycling etc.

Worked! Thank you! - Why is it ln(No/N) = kt though? The formula I have in my notes for first order reactions is ln(N1/No) = -kt

i don't understand the question

Are you on skype plz reply back now

mostly about cells, living organisms, body systems, space, and stuff like that

still dont understand .

A is correct