CHEMISTRY HIGH SCHOOL

Which molecule is amphoteric?A.
NH4+

B.
H2O

C.
H2CO3−

D.
H2SO4

Answers

Answer 1

Answer:

Answer:

The answer is B

Explanation:

Answer 2

Answer:

Answer:

B. H2O

Explanation:

Well, for one example, we know that water is amphoteric... Examples: H2O can become H3O+ or OH-. HCO3- can become CO3^2- or H2CO3

Related Questions

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Which is the best tool to find the volume of the base that she needs to neutralize the acid
Order the following in terms of increasing radius: Al, In, TI, B, Ga
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An atomic nucleus must contain at least one neutron or else the force of attraction of the electron(s) will collapse the atom. True/false

Answers

True. If the nucleus had only protons and electrons, they would stick together like a magnet and collapse the atom.

True the neutron is neutral meaning it doesnt do anything but keep the balance in check

Find three acids and three bases used in your home.1) what are theses acids and bases used for?
2)look up the chemical name and chemical formula of each acid and base

Answers

Acids

Acetic acid in vinegar, used in cooking - CH₃COOH
Citric acid in lemons and oranges - C₆H₈O₇
Carbonic Acid in soft drinks - H₂CO₃

Bases

Sodium Hypochlorite is found in bleach - NaClO
Sodium Hydroxide found in drain cleaners - NaOH
Sodium bicarbonate, also known as baking soda which is used in cooking - NaHCO₃

Which of the following is an acid-base neutralization reaction? (1 point) Sn + 2HBr yields SnBr2 + H2 HCl + KOH yields KCl + H2O 2AlCl3 + 3Ca(OH)2 yields 2Al(OH)3 + 3CaCl2 2C2H6 +7O2 yields 4CO2 + 6H2O

Answers

Answer:

Explanation:

Sn + 2HBr = SnBr₂ + H₂

Here HBr is an acid but Sn is not a base . It is a metal . So it is not an acid - base reaction .

HCl + KOH = KCl + H₂O

HCl is an acid and KOH is a base so it is an acid base reaction.

2AlCl₃ + 3Ca(OH)₂ = 2Al(OH)₃ + 3CaCl₂

It is an acid base reaction . It is so because aluminium hydroxide is a lewis acid and calcium hydroxide is a base . So it is an acid base reaction .

2C₂H₆ +7O₂ = 4CO₂ + 6H₂O

It is not an acid base reaction . It is actually an example of oxidation reaction in which ethane burns in oxygen to give carbon dioxide and water.

Igneous rocks with an andesitic composition ________.

Answers

are found along volcanic island arcs

Cobalt (Co) has an atomic mass of 59 and an atomic number of 27. Which statement correctly describes an atom of cobalt?A. An atom of cobalt contains more neutrons than protons.
B. An atom of cobalt contains more electrons than protons.
C. An atom of cobalt contains the same number of neutrons and protons.
D. An atom of cobalt contains the same number of neutrons, electrons and protons.

Answers

Answer:

Explanation:

27 us the number of protons when we subtract 27 from 59 it will be 32 because a mass number is the sum of proton and neutron but tell u more on the comment

Answer: A - An atom of cobalt contains more neutrons than protons.

Explanation: The atomic number is the number of protons in an atom. The atomic mass is the sum of protons & neutrons in an atom. So, with simple math we can figure out the number of neutrons. Total 59 - 27 protons = 32 neutrons. Which means that A is the only right answer in this case.

Little Extra: A & B would both be correct if Cobalt was a negatively charged ion. An atom is an ion if it is charged, and an ion is either negatively charged or positively charged. For example, if Cobalt had 27 protons & 26 electrons it's overall charge would be positive since it has more protons than electrons. And it would be negatively charged if Cobalt had 27 protons & 28 electrons. No charge if there are 27 protons & 27 electrons because proton +1 and electron -1. Imagine 27-27=0 no charge, 27-26= +1 charge, 27-28= -1 charge

I hope this made you smarter.

What are the three properties of bases?