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3 years ago

15

Which substances in the diagram are most unstable? positive values of enthalpy negative values of enthalpy negative values -50 t

o -100 values near zero

2 answers:

NemiM [27]3 years ago

8 0

Answer:

no s e

Explanation:

tampocose

harkovskaia [24]3 years ago

3 0

Answer:

Positive values of Enthalpy

Explanation:

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ANSWER IN YOUR OWN WORDS!<br> How does the pH of an acid compare with the pH of a neutral solution?

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2 years ago

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What is the force exerted if a 52kg student accelerates into their desk at 5/ms2

murzikaleks [220]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{260 \: newton}}}}}$

Explanation:

Mass ( m ) = 52 kg

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Force ( F ) = ?

According to Newton's second law of motion ,

$\boxed{ \sf{force = mass \times acceleration}}$

$\longrightarrow{ \sf{force = 52 \times 5}}$

$\longrightarrow{ \sf{force = 260 \: newton}}$

Hope I helped!

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3 years ago

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Sodium carbonate, Na2CO3(s), can be prepared by heating sodium bicarbonate, NaHCO3(s). 2 NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) K

Elenna [48]

Answer:

The pressure of CO2 = 0.48 atm

Explanation:

Step 1: Data given

Kp = 0.23

Step 2: The balanced equation

2NaHCO3(s) ↔ Na2CO3(s) + CO2(g) + H2O(g)

Step 3: Calculate the pressure of CO2

Kp = (p(CO2))*(p(H2O))

For 1 mol CO2 we have 1 mol H2O

x = p(CO2) = p(H2O)

Kp = 0.23 = x*x

x = √0.23

x = 0.48

pCO2 = x atm = 0.48 atm

The pressure of CO2 = 0.48 atm

5 0

3 years ago