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otez555 [7]
3 years ago
13

Which characteristic might identify a substance as an Arrhenius base?

Chemistry
2 answers:
Diano4ka-milaya [45]3 years ago
7 0

Answer:

A (It contains an OH group)

Explanation:

Scorpion4ik [409]3 years ago
5 0

Answer: a

Explanation: because an Arrhenius acid is a compound that increases the H + ion concentration in aqueous solution. An Arrhenius base is a compound that increases the OH − ion concentration in aqueous solution.

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How many valence electrons would there be for the element with the<br> following orbital diagram?
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Answer:

6

Explanation:

The p orbital needs 2 more electrons.

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3 years ago
When 33.3 grams of propane (C​3​H​8​) undergoes combustion, what is the theoretical yield of water in grams? The molar mass of p
aev [14]
C3H8+ 5 O2 --> 3 CO2 + 4 H2O
44 g. --------> 72 g
33.3 g. --------> x
x =  \frac{33.3 \times 72}{44} \\ x = 54.5 \: g
Answer: The theoretical yield of H2O is 54.5
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Why are alkalis sometimes<br> described as the opposite of<br> acids?
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Calculate the amount of heat gained when one 250 gram bottle is heated from 25oC to 30oC. The specific heat of water is 4.18 J/g
Fed [463]

Answer:

5230J

Explanation:

Mass (m) = 250g

Initial temperature (T1) = 25°C

Final temperature (T2) = 30°C

Specific heat capacity (c) = 4.184J/g°C

Heat energy (Q) = ?

Heat energy (Q) = Mc∇T

Q = heat energy

M = mass of the substance

C = specific heat capacity

∇T = change in temperature = T2 - T1

Q = 250 × 4.184 × (30 - 25)

Q = 1046 ×5

Q = 5230J

The heat energy required to raise the temperature of 250g of water from 25°C to 30°C is 5230J

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3 years ago
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