CHEMISTRY HIGH SCHOOL

What is the length of time an organism is expected to live?

Answers

Answer 1
Answer: This is called a life span.

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PLEASE HELPPPPP Antimony exists naturally as 2 isotopes. Antimony-121 has a mass of 120.9038 amu and an abundance of 57.30%. Determine the mass of the other isotope, antimony-123 knowing the average atomic mass of the element is 121.80 amu.
Molecules in all organisms are composed in part of radioactive carbon-14. Which statement best explains the presence of carbon-14 in organisms?a. The radioactive isotope reacts in the same way as stable isotopes in the nuclear reactions in the body.b. The radioactive isotope reacts in the same way as stable isotopes in the chemical reactions in the body.c. The radioactive isotope reacts faster than stable isotopes in the nuclear reactions in the body.d. The radioactive isotope reacts faster than stable isotopes in the chemical reactions in the body.
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH–] is 1 x 10–11 mol/L. Is this solution acidic, basic, or neutral? Show all work.
The state of matter that is able to be compressed is gas liquid solid

What is the pH of a 2.0 M solution of HClO4?

Answers

HClO4 is a strong acid. Strong acids dissociate completely in water. 2.0 M of HClO4 is equal to 2.0 M of the H+ ion component of the substance. To solve the pH, the ff formula is to be used: 
pH=-log[H+]

Which compound would most likely turn litmus paper to a red color?a. CH₃CH₂CH₂OH 
b. CH₃CH(Br)CH(Br)CH₃
c. CH₃CH₂CH(Br)CH₃
d. CH₃CH₂CH₂COOH 
e. CH₃CH₂CH₂CH₃

Answers

answer D, because it's acid

What is an ionic bond?

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In ionic bond there is the formation of ions due to transfer of electrons from one atom to the other. Normally, at this link, there is an element that tends to yield electrons (metal-cation), and one that tends to receive electrons (not metal-anion).
Note: the Ionic bond is the only in the transfer of electrons.
Ionic bonds are when atoms lose or gain electrons so that both elements now have a full outer shell. Ionic bonds form between metals and nonmetals.

Elements in the same vertical column share similar chemical properties. Which statement best explains this?a. They have the same number of neutrons in their nucleus.
b. They have similar physical qualities.
c. They have identical numbers of electrons in the outermost level.
d. They were discovered in the same location.

Answers

they have identical numbers of electrons in the outermost level
Answer:C

Explanation:Most vertical columns share similiar chemical properties because they have identical numbers of electrons in the outermost level.

Hope this helped:)

An electron has a charge identical to that of

Answers

The smallest possible particle of an element is a atom. An electron has a charge identical to that of of a proton, but with the opposite sign.

What is atom?

The smallest unit of matter that may be split without producing electrically charged particles is the atom. It is also the smallest piece of substance with chemical element-like characteristics. Electric forces, which link electrons towards the nucleus of atoms, cause them to be drawn to any positive charge.

Space makes up the majority of an atom. The remainder is made up of a cloud of negatively charged electrons around a positively charged nucleus made up of protons and neutrons. An electron has a charge identical to that of of a proton, but with the opposite sign.

Therefore, an electron has a charge identical to that of of a proton, but with the opposite sign.

To learn more about atom, here:

brainly.com/question/29712157

#SPJ6
Protons! I hope that helped out!

What is the mass of 0.7891 mol of (fe2o3)?

Answers

Molar mass F₂O₃ = 159.69 g/mol

1 mole ------------------ 159.69 g
0.7891 moles ---------- ? g

mass = 0.7891 x 159.69 / 1

= 126.01 g 

hope this helps!
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