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Stolb23 [73]
3 years ago
10

Which of the following molecules can form hydrogen bonds with itself? (select all that apply.)

Chemistry
1 answer:
hichkok12 [17]3 years ago
5 0
Sorry no se inglés
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Reil [10]

Answer:

a

Explanation:

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3 years ago
Consider the reaction where barium sulfate can be prepared from 2.76 mol of sodium sulfate and excess barium acetate. Sodium ace
MAXImum [283]

Answer:

1. Na2SO4(aq)+C4H6BaO4(aq) --> BaSO4(s) + 2C2H3NaO2(aq)

2. 2Na^+1(aq) + SO4^-2(aq) + 4C^+4(aq) + 6H^+1(aq) + Ba^-2(aq) + 4O^-2(aq) --> BaSO4(s) + 2C^-4(aq) + 2H^+1(aq) + 3Na^+1(aq) + 2O^-2(aq)

3. Ba^+2(aq) + SO4^-2(aq) --> BaSO4(s)

Explanation:

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3 years ago
What amount of heat is removed to lower the temperature of 80 grams of water from 75º C to 45º C? The specific heat of liquid wa
Sindrei [870]

Answer:The correct answer option A.

Explanation:

Q= m\times c\times \Delta T

Q= heat removed from the water

m= mass of the water = 80 grams

c = heat capacity of water= 4.18 J/g°C      

\Delta T={\text{Change in temperature}}=45^oC-75^oC=-30^oC  

Q=80g\times 4.18J/g^oC\times(-30^oC)

Q = -10,032 joules \approx -10,000 Joules

Negative sign indicates that heat was removed from the water.

Heat removed from the water of 80 gram of water is 10,032 Joules.Hence, the correct answer option A.

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