3 years ago

What does a complete ionic equation look like?

Chemistry

1 answer:

leonid [27]3 years ago

5 0

Answer:

All ionic substances are written as separate ions in solution

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What happens to impacts on the surface of bodies without an atmosphere?

viktelen [127]

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3 years ago

Air enters a diffuser witha velocity of 400 m/s, a pressure of 1 bar and temperature of 25 C. It exits with a temperature of 100

ANEK [815]

Answer:

Exit velocity of air is 96.43 m/s.

Explanation:

Given that

$V_1=400\ m/s$

$T_1=25C$

$T_2=100C$

For air

$C_p=1.005\ KJ/kg.K$

Now from first law of thermodynamics for open system at steady state

$h_1+\dfrac{V_1^2}{2000}+Q=h_2+\dfrac{V_2^2}{2000}+w$

For diffuser

$h_1+\dfrac{V_1^2}{2000}=h_2+\dfrac{V_2^2}{2000}$

We know that

$h=C_pT$

$h_1+\dfrac{V_1^2}{2}=h_2+\dfrac{V_2^2}{2000}$

$1.005\times 25+\dfrac{400^2}{2000}=1.005\times 100+\dfrac{V_2^2}{2}$

$V_2=96.43\ m/s$

So the exit velocity of air is 96.43 m/s.

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4 years ago

Why should a hypothesis be testable?

Ierofanga [76]

A. It must be testable in order to be found true or false.

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3 years ago

Suppose NiCl2 reacts with NaOH. For each molecule of NiCl2, how many molecules of NaOH are needed

Svetllana [295]

Answer:

2molecules

Explanation:

NiCl2 + 2NaOH -> 2NaCl + Ni(OH)2

the mole ratio is 1:2

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2 years ago

How many moles are present in 454 grams of co2?

babunello [35]

Moles=mass/Mr
mass=454
Mr=12+16+16=44
So,454/44=10.31mol
Answer is:10.31mol

3 0

3 years ago

Read 2 more answers