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svetlana [45]
3 years ago
13

A chemical change always involves...

Chemistry
1 answer:
maw [93]3 years ago
4 0
D- a new substance forming
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What human life process requires hydrochloric acid? <br><br> THANKS!!!
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The answer is Enzyme
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3 years ago
Which is a function of nucleic acids?
vazorg [7]

Answer:

The answer to your question is: i have to answer correct first number three and second number one.

Explanation:

1.-regulate cell processes : Nucleic acids are located inside the nucleus and the nucleus is the brain of the cell, it says what functions must be done, then I think this option is correct.

2.- provide structure : Nucleic acids are large molecules but very weak, the couldn't be able to give structure. This option is wrong.

3.- transmit genetic information : The main function of nucleic acids is transmit genetic information, so this option is correct.

4.- fight disease: Nucleic acids are useful to transmit genetic information, and saying the functions a cell must do but fight against diseases is not one of their functions.

5 0
3 years ago
Write the balanced net ionic equation for the reaction that occur in the following case. Cr2(SO4)3(aq)+(NH4)2CO3(aq)→
solmaris [256]
Cr2(SO4)3(aq) + 3(NH4)2CO3(aq) → 3(NH4)2SO4(aq) + Cr2(CO3)3(s) 

<span>Ionic: 2Cr+3 + 3SO4^-2 + 6NH4+ + 3CO3^-2 ----> 6NH4+ + 3SO4^-2 + Cr2(CO3)3 (spectator ions are NH4+, SO4^-2) </span>

<span>Net Ionic: 2Cr^+3(aq) + 3CO3^-2(aq) -------> Cr2(CO3)3(s) </span>
6 0
3 years ago
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Which of the following elements has the strongest ionization energy: Mg or Cl? Define ionization
Mila [183]

Answer:

Cl

Explanation:

The element Cl will have the strongest ionization energy from the given choices. Most non-metals have higher ionization energy compared to metals.

Ionization energy is the energy required to remove the most loosely held electron from the gaseous phase of an atom.

  • As you go from left to right on the periodic table, it increases progressive
  • From top to bottom, the ionization energy reduces significantly.
  • The attractive force between the protons in the nucleus and the electrons plays a very important role.
  • In metals, they have very large atomic radius, the attractive force on the outer electrons is very weak.
  • This is not the case in non-metals
5 0
3 years ago
HELP ASAS 15 POINTS
kramer

Answer:

liquid will be evaporated while solid remains

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3 years ago
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