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Ostrovityanka [42]
3 years ago
15

How many grams of water are frozen if 6,346 Joules of energy was given

Chemistry
1 answer:
ANTONII [103]3 years ago
3 0

Answer:

19g

Explanation:

Given parameters;

Amount of energy  = 6346J

Unknown:

Mass of water frozen = ?

Solution:

This is a phase change and a latent heat was involve;

        H  = mL

H is the quantity of heat

m is the mass

L is the latent heat of fusion of water  = 335J/g

So;

        6346  = mass x  335

    Mass = 19g

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kotykmax [81]

C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O + heat

Explanation:

When Sean cook meals with propane he use a combustion reaction:

C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O + heat

When propane (C₃H₈) is reacted with oxygen (O₂) produces carbon dioxide (CO₂), water (H₂O) and heat.

Learn more about:

combustion reaction

brainly.com/question/13824679

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8 0
3 years ago
How many grams of water are needed to react with 18.9 grams of li2o? given: li2o+h2oâ2lioh?
4vir4ik [10]
The balanced equation for the reaction is as follows;
Li₂O + H₂O ---> 2LiOH
Stoichiometry of Li₂O to H₂O is 1:1
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Number of Li₂O moles reacted - 18.9 g / 30 g/mol = 0.63 mol
An equivalent amount of moles of water have reacted - 0.63 mol
mass of water required - 0.63 mol x 18 g/mol = 11.34 g
A mass of 11.34 g of water is required 
4 0
3 years ago
Of the molecules sicl4 and sii4, which has bonds that are more polar?
diamong [38]
The bonds in the SiCl₄ molecules will be more polar.

The polarity of bonds within a molecule depends on the difference in electronegativity of the atoms that are involved in the bond. Chlorine is a more electronegative atom than iodine. Therefore, the electrons in the Si-Cl bond will be more concentrated near the Cl, creating polarity in the bond. Iodine is not as electronegative, so it will not result in a very polarized Si-I bond
6 0
3 years ago
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Sonbull [250]

Answer:

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Explanation:

As we travel along a period in a periodic table then the atomic radii decreases

This is because as we travel along a period we have that the atomic number of the atoms increases which means the the number of proton's increased

But the electron's add to the same outer shell throughout the period , which means the effective nuclear charge increases which pulls the outer electrons toward's the nucleus and the size decreases.

Therefore the atoms on left side are larger than the atoms on the right side of the periodic table because those on the right have more proton's.

6 0
3 years ago
Zelda noticed a puddle outside her front door. She saw that the puddle got smaller every day, mil the
Tcecarenko [31]

Explanation:

to set 1 container inside, without air movement. 1 outside in that location. compare the 2 containers to see which container has less or more fluid...

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