CHEMISTRY HIGH SCHOOL

Minnesota is one of the largest contributors of nitrogen to the Gulf.
a. True
b. False

Answers

Answer 1
Answer: The answer is false it is not a contributor of nitrogen to the gulf.
Answer 2
Answer: i think that it is false  .............

Related Questions

An Arrhenius base yields which ion as the only negative ion in an aqueous solution?(1) hydride ion (3) hydronium ion (2) hydrogen ion (4) hydroxide ion
A substance has a mass of 360 g and a volume of 7.5 cm3. What is its density?a. 2700 g/cm3 c. 480 g/cm3 b. 270 g/cm3 d. 48 g/cm3
Mixtures have visibile ingredients. Uniform Heterogeneous Solutes Homogenous
Why wasn't oxidation type chemical weathering common more than 2 billion years ago?
The conductors in electrical devices are commonly made of a. iron.,B.nickel.,C.Cooper.,D.lead.

Which balanced equation represents an oxidation-reduction reaction?(1) BaCl2 + Na2SO4==>BaSO4 + 2NaCl
(2) C+H2O ==>CO + H2
(3) CaCO3==>CaO + CO2
(4) Mg(OH)2 + 2HNO3==>Mg(NO3)2 + 2H2O

Answers

Correct Answer: option 2 i.e. (2) C+H2O ==>CO + H2

Reason: 
Reaction is said to be oxidation-reduction (redox) type, when one species undergoes oxidation, while other species undergoes reduction. In present case, during the course of reaction, carbon is oxidized from '0' to '+2'. On other hand, hydrogen is reduced from '+1' to '0'.  
The answer is (2). The oxidation-reduction reaction means that there is electrons transfer in the reaction. So there is valence change of at least two elements evolving in the reaction.

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

The chemical reaction in which compounds break up into simpler Constituents is a.

Answers

decomposition its the answer

Answer:

decomposition

Explanation:

did the test and got it correct

What is the pH of a solution with [H+] = 1.25 mc015-1.jpg 10–10 M?

Answers

Answer : The pH of a solution is, 9.903

Explanation : Given,

Concentration of hydrogen ion = 1.25* 10^(-10)M

pH : It is defined as the negative logarithm of hydrogen ion concentration.

Formula used :

pH=-\log [H^+]

Now put the value of hydrogen ion concentration in this formula, we get the pH of a solution.

pH=-\log (1.25* 10^(-10))

pH=9.903

Therefore, the pH of a solution is, 9.903
[ H+]=10-pH
it become
[H+]=0.1

Which sample of matter is a mixture?
(1) Br2(ℓ) (3) KBr(s)
(2) K(s) (4) KBr(aq)

Answers

The correct answer is option 4. KBr(aq) is an example of a mixture. The symbol (aq) means that the substance is in aqueous form. Thus, potassium bromide is dissolved in water. Mixture is defined as a system which contains two or more substances mixed but not combined chemically. The two substances here are KBr and water.

Is zinc coMpund Plz help me​

Answers

Answer:

it is indeed a compound

Explanation:
Zinc is NOT a compound.

A compound contains two or more elements or molecules like H2O. Where H is 1 element and Oxygen is another and together they make a compound.

Zinc itself is a single molecule (or element) and can be used in a compound like ZnO (zinc oxide)
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When a bond is formed, energy is _________ the environment.A. released intoB. released fromC. kept stable in