1.
Which statement describes something designers should do when
developing a new product?
A. They should make the product and then use advertisements to
prove that it is useful and beneficial.
B. They should consider limitations such as cost, production
time, and materials required.
They should decide whether people will like the product in
order to determine whether it is scientifically sound.
D. They should produce and distribute many copies of the
product and then ask people for feedback about its benefits
and risks.

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.

Which material burns faster? metal aluminum

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years