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Lynna [10]
3 years ago
15

Balance the following the chemical equation: fill in the blanks

Chemistry
1 answer:
Sophie [7]3 years ago
5 0

not sure

Explanation:

mmmm I know mg= magnesium 02=oxygen×2 then I'm not sure sorry

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The atomic mass of hydrogen is one. True False
mafiozo [28]

Answer:

It's true :) Hope that helps

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How much energy, in joules, does 150.0 g of water with an initial temperature of 25 C need to absorb be raised to a final temper
satela [25.4K]

Answer:

31395 J

Explanation:

Given data:

mass of water = 150 g

Initial temperature = 25 °C

Final temperature = 75 °C

Energy absorbed = ?

Solution:

Formula:

q = m . c . ΔT

we know that specific heat of water is 4.186 J/g.°C

ΔT = final temperature - initial temperature

ΔT = 75 °C - 25 °C

ΔT = 50 °C

now we will put the values in formula

q = m . c . ΔT

q = 150 g × 4.186 J/g.°C × 50 °C

q = 31395 J

so, 150 g of water need to absorb 31395 J of energy to raise the temperature from 25°C to 75 °C .

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