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mariarad [96]
3 years ago
14

BRAINLIESTTT ASAP!! PLEASE HELP ME :)

Chemistry
1 answer:
laiz [17]3 years ago
4 0

Add a coefficient 2 before H2O and a 2 before SO2.

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Please help me with this
Olegator [25]

The double replacement reaction

<h3>Further explanation</h3>

Given

Reaction if Na₂S + HCl

Required

Type of reaction

Solution

The double replacement reaction occurs when there is a displacement of the cations and anions of the reactants involved in the reaction to form two new compounds.

The general formula for this reaction :

AB + CD ⇒ AD + CB

At the bottom of the reaction, it is shown the number of atoms of each compound in the reactants and products which indicates the application of <em>the law of conservation of mass</em>, that the number of atoms in the reactants will be the same as the number of atoms in the product, so the reaction is said to be in a balanced state.

5 0
3 years ago
Describe relationships between molecules atoms and a grain of sugar
Contact [7]

The relationships between molecules atoms and a grain of sugar is the combination of atoms to molecules and the combination of molecules to a compound.

<u>Explanation:</u>

Atom is the foreground to the existence of matter and matter is just another huge combination of atoms. The presence of neutrons, protons and electrons are the important structures of atoms and these atoms are merged to build a molecule.

The relationships between molecules atoms and a grain of sugar is the combination of atoms to molecules and the combination of molecules to a compound.

Molecules are brought together with positive and negative parts of protons and electrons to form bonds and compounds. And compounds come up with elements which connects all these atoms.

3 0
3 years ago
. Explain why some desert animals excrete uric acid rather than ammonia.<br>(2 marks)​
avanturin [10]

Answer:

AFAIK

Explanation:

uric acid is much less toxic than ammonia, hence bigger concentrations of it are tolerated in the body. This means you can excrete it while excreting very little water - beneficial wherever water's not abundant.

There's a tradeoff though, uric acid requires more energy to synthesize than ammonia, so pretty much all fish, say, excrete ammonia rather than uric acid - it's no problem to dilute ammonia since there's no water shortage.

5 0
3 years ago
Atoms share one or more pairs of electrons.<br><br> Options:<br> Ionic Bond or Covalent Bond?
garri49 [273]

Answer:

covalent bonds

Explanation:

ionic transfer of e^- ions formed (charges)

ionic=non-metal+ metal

ex: F+Ca

covalent sharing e^- no true charges

covalent= non-metal+ non-metal

ex: F+P

( my notes)

5 0
2 years ago
How many moles are in 3.4 x 10^-7 molecules of silicon dioxide, SiO2?​
avanturin [10]

Answer:

Approximately 5.646 * 10^-17 moles

Explanation:

Avagardo's number is approximately 6.022 * 10^23 molecules. Therefore, dividing 3.4 * 10^7 by avagadro's number yields approximately 5.646 * 10^-17 moles. Hope this helps

7 0
3 years ago
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