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Tpy6a [65]
3 years ago
5

 what is 19.8-17.1

Chemistry
2 answers:
Ostrovityanka [42]3 years ago
7 0

Answer: it should be 2.8

Explanation:

irina1246 [14]3 years ago
7 0
It’s 2.7 although isn’t that math, not chemistry
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Semmy [17]
From erosion i think good luck :D
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3 years ago
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Express the rate of the reaction in terms of the change in concentration of each of the reactants and products.
weeeeeb [17]

Answer:

c. rate=−1/2Δ[HBr]/Δt=Δ[H2]/Δt=Δ[Br2]/Δt

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

2HBr(g)\rightarrow H_2(g)+Br_2(g)

Thus, the rate is given as:

rate=-\frac{1}{2} \frac{\Delta [HBr]}{\Delta t}=\frac{\Delta [Br_2]}{\Delta t} =\frac{\Delta [H_2]}{\Delta t}

It is necessary to remember that each concentration to time interval is divided into the stoichiometric coefficient, that is why HBr has a 1/2. Moreover, the concentration HBr is negative since it is a reactant and it has a negative rate due to its consumption.

Therefore, the answer is:

c. rate=−1/2Δ[HBr]/Δt=Δ[H2]/Δt=Δ[Br2]/Δt

Best regards.

4 0
4 years ago
In an ionic compound, the charges of the _ and _ must balance to produce an electrically substance.
solong [7]

Answer:

positive(cations) and negative(anions)

Explanation:

5 0
3 years ago
How is making an apple pie different from making lead iodide
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Potassium dihydrogen phosphate KH2PO4 and sodium nitrate NaNO2 solutions are mixed together in a beaker. Determine the net ionic
Aleksandr-060686 [28]

Potassium dihydrogen phosphate (KH2PO4) and sodium nitrate (NaNO2)

Molecular equation:

KH₂PO₄ (aq) + 3NaNO₂(aq) → Na₃PO₄(s) + KNO₂(aq) + 2HNO₂ (aq)

The net ionic equation is:

3Na⁺(aq) + PO₄⁻(aq) → Na₃PO₄(s)

The rest of the ions are spectator ions and tend to cancel out on both sides of the reaction.



8 0
3 years ago
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