The digestion process starts in the _____. A.esophagus
B.stomach
C.small intestine
D.mouth

Answers

Answer 1

Answer: The digestion process starts in the mouth first, with the mechanical digestion happening with your teeth. And then the saliva breaks down your food with its enzymes.

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Please help !!!Which of the following alcohols is now commonly being used as fuel additive?

methyl alcohol
ethyl alcohol
isopropyl alcohol
none of the above

Answers

Out of the following alcohols we can conclude the correct answer choice by going through our options, looking at their chemical formulas/structures and defining their usage.

Ethyl alcohol (CH3CH2OH) : Most commonly found in alcoholic beverages.

Isopropyl alcohol (C3H8O) : Is what is known as rubbing alcohol, most commonly used as a cleansing liquid.

Methyl alcohol (CH3OH) : Is most commonly used as formaldehyde, jet fuel, and antifreeze.

So looking at our options we can conclude that the correct answer choice would be Methyl Alcohol because it is used as an additive in jet fuel.

Hope this helps! If you have any other questions or would like further explanation just let me know! :)

Actually the correct answer is B. Ethyl Alcohol.

Which of the notations below is another way to write the name of the following nuclide?A.iodine-53

B.iodide-53

C.iodide-127

D.iodine-127

Answers

Answer: D.iodine-127:

Explanation:

1) As per the definition of nuclide, it is the atomic spieces (the atom) characterized by the nucleons (protons and neutros).

2) To notation for a nuclide is the name of the atom followed by a hypen (without blank spaces) and the mass number.

3) The mass number is the sum of protons and neutrons.

4) From that, you can tell this about the four choices given:

A.iodine-53: is not correct because that would mean that the mass number is 53, which cannot be right as the atomic number of iodine is 53 meaning that it has 53 protons, and so that notation is not including the neutrons.

B.iodide-53: is not correct because the name of the atom is iodine, not iodide (also the mass number cannot be for the same reason explained above)

The name iodide is reserved for the ions from iodine not for the atom.

C.iodide-127: incorrect due to the name iodide, for the same reason explained above.

D.iodine-127: this is correct choice. It is the name of the isotope of the iodine with mass number 127, which means that the atom has 53 protons and 74 neutrons (53 is the atomic number and 74 is calculated from 127 - 53)

Answer:

iodine-127

Explanation:

I did a quiz and it was correct.

Snow in New York City weathers gargoyles on buildings by which process?Carbonation
Abrasion
Oxidation
Acid precipitation

Answers

Answer: Acid Precipitation

Explanation:

The smallest unit into which a compound can be divided and still be that same compound is a(n) ___.

Answers

The molecule of that compound! Hope this helps!

Answer:

The molecule of that compound.

Explanation:

Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. It is now known that _____. A. all of Dalton's hypotheses are correct
B. atoms of an element can have different numbers of protons
C. atoms are divisible
D. all atoms of an element are not identical but they must all have the same mass

Answers

Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. It is now known that atoms are divisible. The answer is letter C

A chemical system that resists changes in pH and prevents large swings in the pH is called __________. a) A base b) An acid c) An anion d) A buffer