please I really need your help understanding these please try to make it as clear as you can please
thank you very much in advance
1-Write the ethanol-water combustion chemical reaction. Which reactant is oxidised and which is reduced?
2- Explain how the state of matter of the products is important to the rocket's success
please I really need your help understanding these please try to make it as clear as you can please thank you very much...
please answer these and please make it clear for my understanding thank you very much in advance 1. Explain how momentum is the key to rocket succes 2. To put a one tonne satellite in to low earth orbit requires a delta v of around 10 km per second from the launch pad. Explain what this means and why a velocity of this magnitude is required. 3. How much kinetic energy will this satellite have in orbit? Compare that with...
please help me understand this also please make it as clear as you can thank you very much in advance 1.How far out in to space does this critical time-delay point occur? 2.what is the current distance of a deep space probe, such as the Voyagers. Calculate the round-trip delay time in communication and comment on ways of getting around this problem when dealing with precisely timed burns.
please answer these and please make it clear for my understanding thank you very much in advance 4. The rocket that launches this satellite burns fuel which releases 42.8 MJ joules per kg of combusted material. What mass of fuel is needed for lifting the satellite's mass to orbit? 5. Explain why more fuel is needed than in question 4 for a real launch system. (overcoming air resistance is only a small part of this additional energy need) Early liquid-fuelled...
Can someone write me a clear understanding explanation to the following question? Thank you. Please state why you think you have the correct answer. Example 1.13: Which of the following compounds undergoes a nucleophilic substitution reaction with ethyl chloride at the greatest rate. A. H3CCHClNH2 B. ClH2CCH2NH2
Please help me answer this with a clear explanation because I really don't understand. Thank you so much! 1. Which of the following is the best method for preparing CH3Br? Explain your reasoning. CH3OH + HBr CH3OH + NaBr CH3OH + Br2 CH3OH + Br+
Please help with clear steps so I can work through it myself! Thank you very much! A mass sits on a platform which oscillates vertically in simple harmonic motion at a frequency of 5 Hz. Show that the mass loses contact with the platform when the amplitude exceeds 1 cm. (Assume g 9.8 m/s2.) Hints: The mass loses contact with the platform if the downward acceleration of the platform exceeds g. To keep the mat i.e., choose x = A...
Hi! I would really appreciate to get help with this question! Thank you very much for your help! -------------- Accompany the exercise by a useful sketch! Use Excel, of course, (if needed.) A newsletter for investors recently reported that the average stock price for a blue chip stock over the past year was $72. No standard deviation was given. Would the stdev be more likely to be $6 or $16 or $60? Explain; ------- Thank you very much!
. Please be clear in the explanations. Thank you very much 1. A particle of mass m and charge q is dropped from the height of h towards a point charge Q, which lies on the ground. What is the minimum distance between the charges? Your should be in terms of m,q, Q,h, g) (5 marks) Hint: Using conservation of energy will make your life easier!
Please help me with this question, i would greatly appreciate this. Thank you very much. 1. Draw the general reaction scheme showing reactants and products for synthesis of Grignard Reaction lab b. discuss the importance and power of the Grignard reaction c. which principles of chemistry involved in this experiment. How do the results fit with those principles. d. List the potential weaknesses and problems that may have affected your results. e. Comment on how the product can be prepared...
Hi.can you help me answer these questions.thank you so much for your help.i really need your help. 1 il. A 10 Sample Of Octane 6 C4 H ) is burned in 0 60ml Calorimeter containing 200 grams of water Q+On Initi al temperature Of 15.00°C.After the reaction the final temperature of water is 33.20°C. The heat Capacity of th Colorimeter 18 837 JQ Kl. The specific heat of water is 4.18 4 JGK Calculote the heat of combustion of action...