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laila [671]
4 years ago
13

Looking at the periodic table, which pair of elements will have the same number of valence electrons? A. silicon and germanium B

. nitrogen and oxygen C. silicon and phosphorus D. hydrogen and helium
Chemistry
1 answer:
Liula [17]4 years ago
7 0
Hydrogen and helium if ism reading it right
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Design a process for separating a mixture of salt, iron filings, and sand
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<span>Gather your materials. Gather the sand, salt and iron filing mixture; a magnet; a paper towel; a cup of warm water; an empty cup; and a piece of filter paper.Use the magnet to remove the iron. ...Use warm water to dissolve the salt. ...<span>Remove the sand from the salt water.</span></span>
4 0
3 years ago
Energy level of diagram​
nlexa [21]

Answer:

<em>The energy level diagram is used to represent the energy states available in each atom. When an electron is in an energy state, it emits nor absorbs radiation. A photon is emitted or absorbed when an electron transitions from one energy state to another.</em>

Explanation:

6 0
3 years ago
FeSO4(aq) + K3PO4 (aq) —&gt;
ch4aika [34]

An ionic equation is a chemical equation in which the electrolytes in aqueous solution are described as dissociated ions.

<h3>What is the difference between ionic equation and net ionic equation?</h3>
  • A complete ionic equation also contains the spectator ions, whereas a net ionic equation just displays the chemical species that are involved in a reaction.
  • A molecular formula has two or more atoms bonded together, whereas a chemical formula can only refer to one atom. They are both elements, and their chemical symbols are unchanged.
  • An ionic equation is a chemical equation in which the electrolytes in aqueous solution are described as dissociated ions. It is similar to a molecular equation in that it expresses compounds as molecules.

3FeSO4(aq) + 2K3PO4(aq) = Fe3(PO4)2(s) + 3K2SO4(aq)

ionic equation : 3Fe(2+)(aq) + 3SO4(2-)(aq)+ 6Na(+)(aq) + 2PO4 (3-) (aq) → Fe3(PO4)2(s)+ 6Na(+) + 3SO4(2-)(aq)

net ionic equation: 3Fe(2+)(aq)  + 2PO4 (3-)(aq) → Fe3(PO4)2(s)  

K2CO3(aq) + CdI2(aq) = 2KI(aq) + CdCO3(s)

net ionic equation for K2CO3(aq) + CdI2(aq) = 2KI(aq) + CdCO3(s).

2HNO3 + CaCO3 = Ca(NO3)2 + H2O + CO2

ionic equation :  CaCO3(s) + 2H+(aq) → Ca2+(aq) + CO2(g) + H2O()

To learn more about :   Ionic equation

Ref :  brainly.com/question/19705645

#SPJ13

5 0
1 year ago
A base is a substance that can __________ a hydroxide ion.
ivanzaharov [21]

Answer:

A base is a substance that can donate a hydroxide ion.

Please Mark Brainliest If This Helped!

7 0
3 years ago
Which unit would be most appropriate for measuring the volume of water in a swimming pool?
melamori03 [73]

Answer:

Liters

Explanation:

Just like meters, liters is used to calculate large volumes of liquid, not solids. :) I hope this helped!

6 0
4 years ago
Read 2 more answers
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