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Annette [7]
3 years ago
11

Identify the generic outer electron configuration for the akali metals

Chemistry
1 answer:
Inga [223]3 years ago
6 0
Alkali metals will always contain one valence electron but the electron configuration will depend on the element
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Calculate the energy required to heat 322.0g of ethanol from −2.2°C to 19.6°C . Assume the specific heat capacity of ethanol und
just olya [345]

Answer:

There is 17.1 kJ energy required

Explanation:

Step 1: Data given

Mass of ethanol = 322.0 grams

Initial temperature = -2.2 °C = 273.15 -2.2 = 270.95K

Final temperature = 19.6 °C = 273.15 + 19.6 = 292.75 K

Specific heat capacity = 2.44 J/g*K

Step 2: Calculate energy

Q = m*c*ΔT

⇒ m = the mass of ethanol= 322 grams

⇒ c = the specific heat capacity of ethanol = 2.44 J/g*K

⇒ ΔT = T2 - T1 = 292.75 - 270.95 = 21.8 K

Q = 322 * 2.44 * 21.8 = 17127.8 J = 17.1 kJ

There is 17.1 kJ energy required

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3 years ago
Why does a solid have a definite shape and volume?
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Answer:

B

Explanation:

The particles are bound to each other and they vibrate at an almost undetectable rate.

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2 years ago
Use the periodic table to choose the correct name for each of the following substances. Check all tha
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phosphorus trichloride

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Chemical ____ are used to represent compounds ​
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Given the following balanced reaction between nitrogen gas and oxygen gas to produce nitrous oxide gas, how many moles of nitrou
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Answer is: 3,3 mol of <span>nitrous oxide gas is produced in this chemical reaction.
</span>Chemical reaction: N₂ + O₂ → 2NO.
n(N₂) = 1,65 mol.
n(NO) = ?
from reaction n(N₂) : n(NO) = 1 : 2.
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n(NO) = 3,3 mol.
n - amount of substance.
4 0
3 years ago
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