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Nuetrik [128]
3 years ago
6

How is dry ice different from ordinary ice?

Chemistry
1 answer:
True [87]3 years ago
5 0

Answer: Well "ordinary ice" is made from water (as we all know) and dried ice is made from carbon dioxide gas

Explanation:

•Hope this helps•

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A 748 L hot air balloon sits on a table at 26.7oC. If the balloon is heated to 48.3oC, what is the new volume?
Naddik [55]

The new volume of the hot air balloon is 801.9L.

As the temperature of the hot air balloon on the table is increased, the its volume also increases.

<h3>Charle's law</h3>

Charle's law states that the volume of an ideal gas is directly proportional to the absolute temperature provided pressure is kept at constant.

It is expressed as;

V₁/T₁ = V₂/T₂

Given the data in the question;

  • Initial volume V₁ = 748L
  • Initial temperature T₁ = 26.7°C = 299.85K
  • Final temperature T₂ = 48.3°C = 321.45K
  • Final volume V₂ = ?

To calculate the new volume we subtsitute our given values into the expression above.

V₁T₂ = V₂T₁

V₂ = V₁T₂ / T₁

V₂ = ( 748L × 321.45K ) / 299.85K

V₂ = 240444.6LK / 299.85K

V₂ = 801.9L

The new volume of the hot air balloon is 801.9L.

As the temperature of the hot air balloon on the table is increased, the its volume also increases.

Learn more about Charle's law here: brainly.com/question/21184611

3 0
2 years ago
Identify the environmental factor that caused the change in gene expression in the previous question. *
Arlecino [84]
It depends what Is the previous question
5 0
3 years ago
Read 2 more answers
2. Write the balanced equation for the following:
Ostrovityanka [42]

Answer:

2CH3CHOHCH3  +  9O2  ---->   6CO2 + 8H2O

Explanation:

It will be a clean burn ( no smoke).

3 0
3 years ago
Adrian loves the pancakes! The problem is, the recipe serves only six, and he has 540 people in his family (including aunts, unc
rjkz [21]

Answer:

ingredient. U.s unit. SI unit. SI unit(540)

flour. 2cups. ²/6. 180cups = 1.8×10²

milk. 2cups. ²/6. 180cups. =1.8×10²

eggs. 2. ²/6. 180eggs. =1.8×10²

melted butter. ⅓cup ¹/18. 30cups. =3×10¹

sugar. 1spoon. ¹/6. 90spoons. =9×10¹

baking powder 2spoons ²/6. 180spoons. =1.8×10²

salt. ½spoon. ¹/12. 45spoons. =4.5×10¹

Explanation:

1) to get the SI unit divide the U.S unit by 6

example:eggs = 2÷6. =²/6

2) to get the SI unit for 540 people ,multiply the SI unit by 540.

example:eggs ²/6×540. = 180

3)convert the answers to scientific notation

example:eggs =180. =1.8×10²

3 0
3 years ago
What is the percent by mass of oxygen in carbon dioxide (CO2)? Use mc008-1. Jpg. 27. 29% 57. 12% 72. 71% 79. 99%.
castortr0y [4]

The percent by mass of oxygen in carbon dioxide (CO_2) is 72.71%.

<u>Scientific data:</u>

  • Molar mass of oxygen gas = 32 g/mol.
  • Molar mass of carbon = 12 g/mol.

To calculate the percent by mass of oxygen in carbon dioxide (CO_2):

First of all, we would calculate the molar mass of carbon dioxide (CO_2);

CO_2 = 12 +(16\times 2)\\\\CO_2 = 12 +32\\\\CO_2 = 44\;g/mol

For the percent by mass of oxygen:

O_2 = \frac{Mass\; of \;O_2}{Mass\; of \;CO_2} \times 100

Substituting the parameters into the formula, we have;

O_2 = \frac{32}{44} \times 100\\\\O_2 = 0.7271 \times 100

Percent mass of oxygen = 72.71%

Read more on percent mass here: brainly.com/question/15182450

5 0
3 years ago
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