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dangina [55]
4 years ago
14

Help me please I really do need help pls text me if u wanna help me more

Chemistry
1 answer:
8090 [49]4 years ago
8 0
Respiration . I’m pretty sure
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b lithium and water

Explanation:

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_______ waves occur when the motion of the medium is parallel to the direction of the wave.
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Longitudinal. (just remember that Transverse waves are perpendicular. T is like an inverted perpendicular sign)
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NH₄NO₃ → N₂O + 2H₂O When 45.70 g of NH₄NO₃ decomposes, what mass of each product is formed?
Anna007 [38]

Answer: 25.13 g of N_2O  and 20.56 g of H_2O will be produced from 45.70 g of NH_4NO_3

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} NH_4NO_3=\frac{45.70g}{80.04g/mol}=0.571moles

The balanced chemical equation is:

NH_4NO_3\rightarrow N_2O+2H_2O  

According to stoichiometry :

1 mole of NH_4NO_3 produce = 1 mole of N_2O

Thus 0.571 moles of NH_4NO_3 will require=\frac{1}{1}\times 0.571=0.571moles  of N_2O  

Mass of N_2O=moles\times {\text {Molar mass}}=0.571moles\times 44.01g/mol=25.13g

1 mole of NH_4NO_3 produce = 2 moles of H_2O

Thus 0.571 moles of NH_4NO_3 will require=\frac{2}{1}\times 0.571=1.142moles  of H_2O  

Mass of H_2O=moles\times {\text {Molar mass}}=1.142moles\times 18g/mol=20.56g

Thus 25.13 g of N_2O  and 20.56 g of H_2O will be produced from 45.70 g of NH_4NO_3

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3 years ago
The label on a ready-to-eat cereal box indicates that 1 cup contains 32 grams of carbohydrate, 4 grams of protein, and 2 grams o
eduard

Energy given by carbohydrates present in one cup =32 g * \frac{4 kcal}{1 g} = 128 kcal

Energy given by proteins present in one cup = 4 g * \frac{4 kcal}{1 g} = 16 kcal

Energy given by fat in one cup = 2 g * \frac{9 kcal}{1 g} = 18 kcal

Total energy in one cup of cereal box = 128 kcal + 16 kcal + 18 kcal = 162 kcal

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= 324 kcal

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4 years ago
Which alkaline earth metal is the components of slaked lime​
kap26 [50]

Answer:

calcium hydroxide.............

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