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Vadim26 [7]
2 years ago
7

HELP

Chemistry
2 answers:
GarryVolchara [31]2 years ago
7 0
It’s B Have Ah Good Day
tankabanditka [31]2 years ago
6 0
It is B!! Good luck on you assignment
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Because its in group one....which only lose or gain electrons.....thus it will only have oneelectron to fulfill its octect rule
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How many protons dose p have
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If the temperature of 15 grams of water changes from 21C to 24C, how many joules of heat were involved? Show work
goblinko [34]

Answer:

189 Joules

Explanation:

Applying,

Q = cm(t₂-t₁)............. equation 1

Where Q = Heat, c = specific heat capacity of water, m = mass of water, t₁ = Initial Temperature, t₂ = Final temperature.

From the question,

Given: m = 15 grams = 0.015 kg, t₁ = 21 °C, t₂ = 24 °C

Constant: c = 4200J/kg.°C

Substitute these values into equation 1

Q = 0.015×4200×(24-21)

Q = 0.015×4200×3

Q = 189 Joules

6 0
2 years ago
An endothermic reaction _____.
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3 years ago
What is the balanced chemical equation for the word equation below?
ladessa [460]

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4Fe + 3O₂ → 2Fe₂O₃

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