CHEMISTRY HIGH SCHOOL

Suppose that geneticists developed a strain of bacteria that breaks down polyethylene, an otherwise non biodegradable plastic. How would such bacteria be useful? Do you foresee any dangers from these new bacteria?

Answers

Answer 1
Answer: Polyethylene is a widely used substance for manufacturing plastic. A bacteria like that could "eat" plastic garbage made from polyethelene which would be really helpful. The danger is that a bacteria can't differentiate between junk and useful things made out of PE, so they would eat everything made from it. 

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An atom has 11 protons, 12 neutrons, and 11 electrons. what is the charge of the atoms nucleus?A) +11
B) -11
C) 0
D) 23

Answers

Answer:

Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

Explanation:

H2(g) + CO2(g) + 10 kcal H2O(g) + CO(g)In another experiment involving the above reaction at 1,000°C, the equilibrium concentrations were found to be:

H2(g) = 2.0 moles per liter
H2O(g) = 4.0 moles per liter
CO2(g) = 5.0 moles per liter
CO(g) = 4.0 moles per liter

What is the equilibrium constant, Keq, for this reaction?

Answers

The equilibrium contant for the reaction is 1.6. Solution: [H2]=2.0 mol/L [CO2]= 5.0 mol/L [H2O]= 4.0 mol/L [CO]= 4.0 mol/L K = [H2O][CO] / [H2][CO2] K = (4.0)(4.0) / (2.0)(5.0) K = 1.6 Ans [ =1.6 ]

PLS HELP ILL MAKE BRAINLIEST 30 POINTS!!Which parts of the muscular and skeletal system work together to move muscles and bones? nerves esophagus and intestine arteries and vessels tendons and ligaments

Answers

Answer:

tendons and ligaments

In the equation PbO2 + 4HCl → 2H2O + PbCl2 + Cl2, how many electrons are transferred? A. 1 B. 2 C. 3 D. 4

Answers

The answer is NOT 4... I took the test!
PbO2+2e ->Pb^2+
2Cl^- ->Cl2+2e
so 2e are transferred

A city planner needs a new method for cleaning a town’s water supply. He hires a scientist to research the issue. Because the scientist is being paid by the city planner, her research is not valid.True

False

Answers

False i am 87 % sure
false  

just because she is being paid by him does not mean anything unless the planner is cheating and or she has some reason to be inaccurate

what are the three particles of an atom

Answers

They are protons, neutrons and electrons.
They are proton nuetrons and electrons
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