Biology, 07.12.2019 23:31, batmanmarie2004
How does a catalyst influence a chemical reaction?
a.)it speeds up or slows down a chemical reaction by direct participation.
b.)it reacts with products to increase the concentration of reactants.
c.)it provides an alternative energy pathway for the reaction to proceed.
d.)it increases the total amount of products formed.
Answers: 3
Biology, 21.06.2019 22:00, nicolemillan20
Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.
Answers: 1
Biology, 22.06.2019 02:00, mathman783
Bisphenol a (often called bpa) is a chemical found in products that people use every day, from water bottles to food containers to children's toys. unfortunately, bpa leaches out of its many products and makes its way into our bodies. what are the health effects of bpa exposure? ongoing research is finding that elevated exposure to bpa can affect a wide variety of developmental and physiological processes, but one of the first studies of bpa's health effects came about because of a simple mistake in the lab. at a laboratory at case western reserve university in 1998, geneticist patricia hunt was making a routine check of her female lab mice. as she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. she noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. she learned that a lab assistant had mistakenly washed the plastic mouse cages and water bottles with a harsh soap, releasing bpa from the plastic. knowing that bpa is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, hunt set out to discover whether it had adversely affected her mice.
Answers: 2
Biology, 22.06.2019 11:00, kingje1477
At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary
Answers: 2
How does a catalyst influence a chemical reaction?
a.)it speeds up or slows down a che...
a.)it speeds up or slows down a che...
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