Why are some substances acid and some are bases

Answers

Answer 1

Answer:

Chemical substances can be acids or bases on the basis of presence of positively charged hydronium ion and negatively charges hydroxyl ions in the compound.

What are chemical substances?

A chemical substance is a form of matter which have a constant chemical composition and characteristic properties which are unique. However, chemical substances cannot be separated into its constituent elements by the application of physical separation methods, i.e., without breaking the chemical bonds.

Chemical substances are of two types depending upon the presence of positively charged hydronium ions and the negatively charged hydroxyl ions. If there are more negatively charged hydroxyl ions than the positively charged hydronium ions, then the substance becomes a base however if there are more positively charged hydronium ions than the negatively charged hydroxyl ions then the substance is called an acid.

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Answer 2

Answer:

Substances made with hydrogen ions are acidic. Substance made with hydroxide ions are bases. It depends on which ions they are made of.

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In pea plants, purple flowers are dominant over white flowers. Which of the following crosses would create an offspring population with all white flowers?two hybrid plants two homozygous recessive plants homozygous dominant plant with a hybrid plant homozygous recessive plant with a hybrid plant ------------------- Choose all the answers that apply. In some plants, pink flowers are dominant over yellow flowers. If Marlo crosses two hybrids _____. the ratio of pink to yellow flowers will be 3:1 50 percent of the offspring will be hybrids none of the offspring will have yellow flowers three-fourths of the offspring will have the same phenotype half of the offspring will be homozygous for flower color

Why is eletric energy is a type of kinetic energy.

Answers

Like kinetic energy, electric energy can be constantly be in motion.
Give 5 stars and brainliest answer if this helped please!

energy is derived by the formular KE = 1/2 mv^2 and you need energy to put the electrons on the move. and once they are moving and carry energy in return i hope thats helpful

What is a trophic level?

Answers

Levels of like ecosystems or like comprising organisms that share the same function in a food chain.
Hope it helped! <3

You and a group of friends are spending your vacation hiking through the mountains. It is cold in the mountains. You will be expending a lot of energy while hiking and you will need plenty of energy to help keep you warm. You should pack foods high in ________ to provide the most energy or kilocalories per gram of food. A) carbohydrates B) lipids (fats) C) proteins D) sugars

Answers

Answer:

The correct answer will be option-B (fats or lipids)

Explanation:

The oxidation of fatty acids provides the most abundant energy that is 9 kilocalories per gram of food as compared to proteins and the carbohydrate which provides only 4 kilocalories per gram of food.

If a person wants to go hiking then, the person would keep the food rich in fatty acids which will provide a high amount of energy and a large amount of heat through the process of respiration.

Thus, Option-B is the correct answer.

C. proteins

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A major freeway runs along a stretch of the ocean shore. Over time, scientists begin tonotice a decrease in the number of intertidal organisms. Which of the following is the most
likely cause of the problem?
O A. toxic waste spilled during accidents on the
road
B. runoff of oil and other chemicals from the
road
C. wastewater from the city across the
freeway
O D. Any or all of the above could be causing
the problem.

Answers

Answer:

D. Any or all of the above could be causing the problem.

Explanation:

Pollution has been said to have adverse effect on living organisms. In this question, a decrease in number of intertidal organisms has been observed. Since a major freeway runs along a stretch of the ocean shore, the most likely cause of the death of the intertidal organisms is the release of any form of toxic waste into the water body.

Oil pollutants causes death of living organisms by hindering the entrance of oxygen into the water body. It makes it difficult for oxygen, which is a requirement for life, to penetrate the water body. Hence, living organisms in the water body will suffocate and die.

Toxic wastes also causes the death of organisms when ingested in excess. Waste water causes deterioration in the oxygen content of the water body. Hence, any or all of the above options can likely cause the reduction in number of the intertidal organisms.

A recessive allele t is responsible for a condition called distonia. A man who has this condition marries a woman who doesn't. One of their four children has the condition. What are the possible genotypes of the man and the woman? (Hint: To help you answer this question, create a Punnett square for each possibility.) A. Both parents are TT.
B. The father is tt; the mother is Tt.
C. The father is Tt; the mother is TT.
D. The father is tt; the mother is TT.

Answers

The correct answer would be: D.The father is tt; the mother is TT.
Look at this key:
TT-distonia
Tt-no distonia
So look at answer A. It says in your question that the man has the condition, but the woman does not. So the answer would not be A (TT). If the woman had the condition, that would be the answer.
Now look at B. Father has tt and mother has Tt. That means the father would not have the condition and the mother would not. So that's not correct either.
Now look at C. Father has Tt and mother has TT. That means that they both have it.
Now look at the final choice: D. The father is tt and the mother is TT. The father has little t and little t, that is the 100% of having distonia. Mother has TT and not tt, so that means she will not get distonia. So that is correct.
And also, if there is a capital and lowercase letter next to each other, then think about it, the capital one is 'stronger', so it has that whatever case.

Hope this helps! :-)

What is the history of lyra?

Answers

Lyra Latin for lyre, from Greek is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.

Vega, Lyra's brightest star is one of the brightest stars in the night sky, and forms a corner of the famed Summer Triangle asterism. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables. These binary stars are so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.

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