Will mark brainliest and give 30 points
(i have 5 questions) {don't put in random answers either}

2. the intelligence of early humans is demonstrated by the way the pyramids of egypt were built.
true false

3. gunpowder was first discovered during the renaissance.
true false

4. technology has solved some problems and has created others.
true false

6. education declined during the renaissance.
true false

7. technology is science that makes science useful and practical.
a) general
b) experimental
c) pure
d) applying
e) theoretical
f ) technical
(you don't need to use the same answer for both blanks)

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Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

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.

What is the common name for the compound shown here? enter the common name of the compound shown?