CHEMISTRY HIGH SCHOOL

Which of the following is a biogeochemical cycle?a. Atmospheric cycle
b. Iconic cycle
c. Neonic cycle
d. Water cycle

Answers

Answer 1
Answer: Biogeochemical cycles are cycles that involve biological, geological and chemical processes. It is a pathway by which a chemical substance moves through the biotic and abiotic compartments of the Earth. Among the options, the one which is a biogeochemical cycle is letter "D. Water cycle" 

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What is the molar mass of ph

Answers

30.973762 u ± 0.000002 u Hope this Helps >>

Which of these statements about mixtures is true?Mixtures are made up of elements bonded together.
Elements and compounds are types of mixtures.
Pure substances are made up of mixtures combined in specific ratios.
Mixtures are classified based on the distribution of particles in them.

Answers

Answer: Option (d) is the correct answer.

Explanation:

When two or more different substances are mixed together then it results in the formation of a mixture.

Mixture are of two types, that is, homogeneous mixture and heterogeneous mixture.

In homogeneous mixture, the constituent particles are distributed evenly throughout the mixture.

Whereas in heterogeneous mixture, the constituent particles are non-uniformly distributed.

Thus, we can conclude that mixtures are classified based on the distribution of particles in them.
The best answer from the choices would be the last option. Mixtures are classified based on the distribution of particles in them. The classification are called homogeneous and heterogeneous mixtures. The former type describes a mixture where all components are distributed evenly. The latter type is a mixture where the components do not have uniformity in the mixture.

True or false: Chlorine treatment is effective in removing Cryptosporidium from water.

Answers

Answer:

False, they are non-effective

Explanation:

Although wave power does not produce pollution, some people may not want to invest in it because it is _____.

Answers

Answer:

Prone to storm damage and limited to particular areas of the ocean

Explanation:

Hello,

Even when the wave power is beneficent towards the environment care, it has a notable disadvantage when high energy waves are took by the energy stations by cause of electrical failures which lead to the station breakdown. On the other hand, there are hard-to-access areas in the ocean which restricts the enforcement of this type of energy.

Best regards.
The correct answer for the question that is being presented above is this one: "Although wave power does not produce pollution, some people may not want to invest in it because it harms marine life and its difficult to mountain it also disturbs the route of the ships."

26 A substance that dissolves in water and produces hydronium ions as the only positive ions in the solution is classified as(1) an alcohol (3) a base
(2) an acid (4) a salt

Answers

Answer : The correct option is, (2) an acid

Explanation:

As we know that when a substance (acid) that dissolves in water, it produces hydronium ion as a positive ion and conjugate base as a negative ion.

For example :

When CH_3COOH (acid) dissolves in water, it produces hydronium ion as a positive ion and conjugate base as a negative ion.

The balanced reaction will be,

CH_3COOH+H_2O\rightarrow H_3O^++CH_3COO^-

Therefore, the substance is, (2) an acid
(2) an acid
It's caused by an Arrhenius acid mixing with water to form Hydronium and Hydroxide ions

Propane and oxygen react according to the equation: C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(g).How many grams of water can be produced from the complete combustion of 2.0 moles of C₃H₈(g)?
a. 144.0
b. 82.0
c. 8.0
d. 44.8
e. 22.4

Answers

1mole of propane produced 4 moles of water
44g of propane produced 18×4=72g of water
2moles of propane=2×44=88
44:72
88:x
44x=88×72
x=2×72
x=144.0grams option (a)
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