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34kurt
3 years ago
14

Which statement explains the process of a chemical reaction? A. Substances are mixed together, producing a homogeneous mixture.

B. Reactants react to produce new substances known as products. C. Substances are mixed together, producing a heterogeneous mixture. D. Products combine to produce new reactants.
Chemistry
2 answers:
statuscvo [17]3 years ago
5 0

D.) Products combine to produce new reactants.....whatever that means
ololo11 [35]3 years ago
3 0
The answer is D: Products combine to produce new reactants... Hope this helps! :)
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What reaction might we use to synthesize nickel sulfate, NiSO4?
guapka [62]

As I understand from your question, we should synthesize nickel sulfate first from nickel (II) oxide and sulfuric acid and second from nickel carbonate and sulfuric acid.

The chemical reactions will look like this:

NiO (s) + H₂SO₄ (aq) → NiSO₄ (aq) + H₂O (l)

NiCO₃ (aq)* + H₂SO₄ → NiSO₄ (aq) + H₂CO₃ (aq)

but carbonic acid will decompose to carbon dioxide and water

H₂CO₃ (aq) → CO₂ (g) + H₂O (l)

(*) NiCO₃ has a poor solubility in water, but enough to start the reaction.

8 0
3 years ago
What is the atomic number of a sodium atom that has 11 protons and 12 neutrons?
galben [10]
Answer should be 23.
3 0
3 years ago
How many moles of solute are contained in a 250.0-milliliter solution that has a concentration of 0.85 M?
adoni [48]

Answer : The correct option is, 0.21 moles

Solution : Given,

Molarity of the solution = 0.85 M = 0.85 mole/L

Volume of solution = 250 ml = 0.25 L     (1L=1000ml)

Molarity : It is defined as the number of moles of solute present in one liter of the solution.

Formula used :

Molarity=\frac{\text{moles of solute}}{\text{Volume of solution in liters}}

Now put all the given values in this formula, we get the moles of solute of the solution.

0.85mole/L=\frac{\text{moles of solute}}{0.25L}

\text{moles of solute}=0.2125=0.21moles

Therefore, the moles of solute is, 0.21 moles

7 0
3 years ago
Read 2 more answers
Is my current answer correct? if not, please correct me​
MAVERICK [17]

Answer:

Yes you’re correct :)

Explanation:

4 0
3 years ago
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Property Of acids Helpp
Mandarinka [93]

They turn litmus paper blue.

4 0
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