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satela [25.4K]
3 years ago
7

OFFERING 50 POINTS

Chemistry
2 answers:
Arisa [49]3 years ago
7 0

Answer:

2,600

Explanation:

tigry1 [53]3 years ago
6 0

Answer:

The volume will be 2600 L.

Explanation:

Initial temperature (T_{1}) = 25°C = (25 + 273) K = 298K

Final temperature (T_{2}) = 54°C = (54 + 273) K = 327 K

By using the combined gas law equation,

                                 \frac{P_{1} V_{1} }{T_{1} } = \frac{P_{2} V_{2} }{T_{2}  }

                       or, \frac{760* 1200}{298} = \frac{380* V_{2} }{327}

                      or, 3060 × 327 = 380 × V_{2}

                      or, V_{2} ≈ 2600 L

Hence the volume of the balloon will be about 2600 L.

You might be interested in
An
Basile [38]

Answer:

The answer of this question is molecule

4 0
3 years ago
How many chloride ions are in 2.6 moles of CaCl2?
Rama09 [41]

Answer:

31.31× 10²³ number of Cl⁻ are present in 2.6 moles of CaCl₂ .

Explanation:

Given data:

Number of moles of CaCl₂ = 2.6 mol

Number of Cl₂ ions = ?

Solution:

CaCl₂  → Ca²⁺ + 2Cl⁻

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

In one mole of CaCl₂ there are two moles of chloride ions present.

In 2.6 mol:

2.6×2 = 5.2 moles

1 mole Cl⁻ =   6.022 × 10²³ number of Cl⁻ ions

5.2 mol ×  6.022 × 10²³ number of Cl⁻  / 1mol

31.31× 10²³ number of Cl⁻

8 0
3 years ago
Make sure to show your answer using correct units and sig figs. (all of the
allochka39001 [22]

Answer:

1. 84g.mol`¹

2. 342g.mol`¹

3 0
3 years ago
Question 1 2.3 kJ is how many J?​
Vinil7 [7]

Answer:

2300J

Explanation:

1 kilojoule is 1000joules so to get how much is 2.3 multiply it with 1000

4 0
3 years ago
Your teacher asks you to follow the instructions in a lab to produce several known chemical reactions. During these procedures,
vova2212 [387]

Answer:

There are five evidences that tell whether a chemical change has occurred. These are change of color, change of odor, change in temperature or energy, formation of gas and formation of a precipitate.

Explanation:

Chemical Change- This is a type of chemical reaction which occurs when the properties of one or more atoms change and results into a<u> newly formed substance. </u>

Let's have a further discussion of the evidences.

1. Change of Color- Color change is caused by the combination of two or more substance with different molecular structures. A popular example of this is the Statue of the Liberty, which is made of copper plates. Due to the exposure of copper to elements like water, it changed color.

2. Change of Odor- This can be best presented with rotting food. During the rotting process, the food undergoes a chemical reaction. The result is a rotten smell.

3. Change in Temperature or Energy- An example of this is the burning of wood. Its change is considered non-reversible.

4. Formation of Gas- This can be best presented with the cake batter (the one being used to make cakes or pancakes). The batter rises which means it is forming gas. This is caused by the reaction of the baking soda and the acid.

5. Formation of a Precipitate- This occurs when two soluble salts combine and their outcome is an insoluble salt (this is the precipitate).

Take note that if any of these evidences occur, then there's definitely a chemical reaction.

3 0
3 years ago
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