An engineering team designs a new rocket that is faster and lighter than any other model being produced. However, the materials end up being so expensive that no company can afford to buy them. Which step of the engineering process should have addressed this problem?

What’s the scientific notation for the number 6,840,000,000

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.