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sp2606 [1]
4 years ago
7

Which substances are always produced in an acid-base neutralization reaction? Check all that apply.

Chemistry
1 answer:
saw5 [17]4 years ago
8 0
The neutralization reaction goes according to the scheme
H⁺ + OH⁻ = H₂O

acid and base react, salt and water are formed
NaOH + HNO₃ = NaNO₃ + H₂O
2KOH + H₂SO₄ = K₂SO₄ + 2H₂O

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Answer:

Non-zero digits are always significant

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1 year ago
The compound Xe(CF3)2 decomposes in afirst-order reaction to elemental Xe with a half-life of 30. min.If you place 7.50 mg of Xe
Irina-Kira [14]

Answer:

t=147.24\ min

Explanation:

Given that:

Half life = 30 min

t_{1/2}=\frac{\ln2}{k}

Where, k is rate constant

So,  

k=\frac{\ln2}{t_{1/2}}

k=\frac{\ln2}{30}\ min^{-1}

The rate constant, k = 0.0231 min⁻¹

Using integrated rate law for first order kinetics as:

[A_t]=[A_0]e^{-kt}

Where,  

[A_t] is the concentration at time t

[A_0] is the initial concentration

Given that:

The rate constant, k = 0.0231 min⁻¹

Initial concentration [A_0] = 7.50 mg

Final concentration [A_t] = 0.25 mg

Time = ?

Applying in the above equation, we get that:-

0.25=7.50e^{-0.0231\times t}

750e^{-0.0231t}=25

750e^{-0.0231t}=25

x=\frac{\ln \left(30\right)}{0.0231}

t=147.24\ min

6 0
3 years ago
Potassium
ad-work [718]

Answer:

  • We observe that hydrogen burns at mouth of beaker with blue flame and pop sound is heard. It is a chemical change.
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3 years ago
What force is necessary to accelerates a 1250kg car at a rate of 40 m/s
zalisa [80]

Answer:

F = 50000 N

Explanation:

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Formula:

a = Δv/Δt

a = acceleration

Δv = change in velocity

Δt = change in time

Units:

The unit of acceleration is m.s⁻².

Acceleration can also be determine through following formula,

F = m × a

a = F/m

Given data:

Mass of car = 1250 Kg

Acceleration = 40 m/s².

Force = ?

Solution:

F = m × a

F = 1250 Kg ×  40 m/s²

Kg.m/s² = N

F = 50000 N

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3 years ago
Forrest spills some acid on the lab floor. He notifies his teacher and begins to look for baking soda to neturalize the acid on
gregori [183]
His classmates should be notified next
7 0
3 years ago
Read 2 more answers
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